Chipper/Shredder

Instruction & Owners Manual

Crary CompanyBox 849West Fargo, ND 58078(701) 282-5520 (800) 247-7335FAX: (701) 282-9522

Manufactured in theUnited States of America

by Crary Company

Cat. No. 16023Manual No. 297

Chipper/Shredder Models:71020, 71014 (Towable)70554,70520 (PTO)

P H O N E

B E A R C A T

How toContact

Bear Cat

M-F, 8 a.m. to 5 p.m.Central Time

Crary Bear Cat

237 NW 12th StreetPO Box 849

West Fargo, ND 58078

Serial Number Decal Location

This safety alert symbol identifies important safety messages in this manual.When you see this symbol, be alert to the possibility of personal injury andcarefully read the message that follows.

Be alert! Your Safety is Involved.

Model Number

Serial Number

Owner's RecordPlease take a moment to record the followinginformation about your chipper. If you need tocall for assistance, please be ready to provideyour model and serial numbers. Thisinformation will allow us (or your dealer) tohelp you more quickly when you call.

800-247-7335701-282-5520

Fax: 701-282-9522

Dear Bear Cat Customer,Thank you for purchasing a Crary Bear Cat Chipper. The Bear Cat Chipper isdesigned, tested, and manufactured to give years of dependable performance.To keep your chipper operating at peak efficiency, it is necessary to adjust itcorrectly and make regular inspections. The following pages will assist you inthe operation and maintenance of your machine. Please read and understandthis manual before operating the chipper.

If you have any questions or comments about this manual, please call us toll-free at 1-800-247-7335.

If you have any questions or problems with your chipper, please call or writeyour local factory-authorized Bear Cat dealer.

Please Send Us Your Warranty Card

A warranty card is included in your owner's kit packaged with your chipper.Please take the time to fill in the information requested on the card. When yousend your completed card to us, we will register your machine and start yourcoverage under our limited warranty.

A D D R E S S

H O U R S

Serial Number Decal

W A R R A N T Y

Warranty

Chipper and Hydraulic Feed Limited Warranty

Crary Bear Cat products are warranted for two years from the date of sale to the original cumsumer purchaserand 90 days from the date of sale to a commercial or rental operation. On models 70380, 70500, 70520,70554, 70580, 71014, 71020, 71620, 71825, 71854, there is a 90 day warranty for commercial business orrental use, and a two year warranty when sold to a consumer for private use. The engine is warranted by theoriginal manufacturer with the terms and limitations listed in the manufactures manual.

Within the above stated period, Crary Co. will replace any part(s) found to be defective in material and/orworkmanship, after the receipt of the part in our plant. Labor costs to replace these defective parts will be paidat a Crary established labor rate and time allowed (flat rate) for repair. All transportation charges incurred inshipping part(s) are the responsibility of the purchaser.

This warranty is void in the case of accidents, failure to perform normal maintenance, or failure to followthose instructions listed in the service manual. This warranty is also in lieu of all other expressed warrantiesand voids any implied warranty as to the merchantability or fitness of the product for a particular purpose andof any other obligation on the part of Crary Co. Some states do not allow limitations on how long the impliedwarranty lasts, so the above limitation may not apply to you.

This warranty applies only to parts or components which are defective, and does not cover necessary repairdue to normal wear, misuse, accidents, or lack of proper maintenance. This includes belts, pulleys, andchipper blades. Regular routine maintenance of the unit to keep it in proper operating condition is theresponsibility of the owner.

All warranty repair reimbursable under the Crary Co. warranty must be performed by an authorized Bearcatservice dealer using Bearcat approved replacement parts. Repair or attempted repair by anyone other than anauthorized Bearcat service dealer is not reimbursable under the Crary Co. warranty. In addition, theseunauthorized repair attempts may result in additional malfunction, the correction of which is not covered bywarranty.

Crary Co. is not liable for indirect, incidental, or consequential damages in connection with the use of thisproduct including any cost or expense or providing substitute equipment or service during periods ofmalfunction or non-use.

Some states do not allow the exclusion of incidental or consequential damages, so the above exclusion may notapply to you. This warranty gives you specific legal rights. You may also have other rights which vary fromstate to state.

Be sure to note the Chipper serial number in any correspondence with Crary Co. or any authorized Bearcatdealer. The serial number is located on the rotor assembly cover.

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C O N T E N T S

Contents

Section 1: Safety Instructions ................................... 21.2 Safety Decals ................................................................................... 4

Section 2: Assembly, Controls, and Operation ........ 62.1 Assembly ......................................................................................... 5

2.1.1 Assembly, Towable Models ........................................................... 52.1.2 Assembly, PTO Models ................................................................ 52.1.3 Controls & Operation ..................................................................... 62.1.4 Starting .......................................................................................... 82.1.5 Specifications & Recommendations ............................................... 8

2.2 Operation .......................................................................................... 92.2.1 Shredding ...................................................................................... 92.2.2 Chipping ........................................................................................ 92.2.3 Stopping Instructions ..................................................................... 9

Section 3: Service and Maintenance ....................... 10Service & Maintenance Chart ............................................................... 10

3.1 Changing Discharge Screens ........................................................ 11

3.2 Sharpening Chipper Blades ............................................................ 113.2.1 Chipping Blade Sharpening Tips .................................................. 113.2.2 Setting Chipping Blade Clearance ............................................... 12

3.3 Replacing Shredder Kit ............................................................... 133.3.1 Clearing Plugged Rotor(Towable) ................................................ 133.3.2 Clearing Plugged Rotor (PTO) ..................................................... 143.3.3 Removing Rotor .......................................................................... 143.3.4 Replacing Drive Belts (Towable) ................................................. 143.3.5 Replacing Drive Belts (PTO) ....................................................... 143.3.6 Trailer Service Tips ..................................................................... 153.3.7 Additional Service Tips ............................................................... 15

Service Accessories .................................................. 15Troubleshooting ......................................................... 16

Warranty

2

Safety Instructionsthis machine wearing loose clothing particularly if ithas drawstrings which could wrap around or getcaught in the machine.

3. Operate the machine only on a level surface. Do notoperate the machine on a paved, concrete, or hardgravel surface. Operating on a hard surface maycause discharged material to rebound and kickback.It will also cause increased machine vibration.Increased vibration may cause the machine to moveand will promote premature wear of parts or loosen-ing of fasteners.

4. Before starting the machine, visually check that allscrews, nuts, bolts, and other fasteners are properlysecured. Once every 10 hours of operation, allscrews, nuts, bolts, and other fasteners should bechecked for proper tightness to insure everything isin proper working condition.

Operation

1. Before starting the machine, make certain that thecutting chamber is empty.

2. When feeding chipable material into the machine, beextremely careful to exclude pieces of metal, rocks,bottles, cans, and other foreign objects.

3. If the cutting mechanism strikes any foreign objector if the machine should start making an unusualnoise or vibration, immediately shut off the engine,and allow the machine to come to a complete stop.After machine stops:

a) Inspect for damage.

b) Replace or repair any damaged parts.

c) Check for and tighten any loose parts.

4. Every 10 hours of operation, check the bolts on thefollowing for correct torque (75 ft. lbs.):

• Chipper rotor bearing

• Chipper blades (use 5/16" bolts (20 ft lbs))

Failure to maintain proper fastening torque (75 ft.lbs.) on bolts for the components listed above mayresult in severe damage to the chipper and/orpersonal injury!

S E C T I O N 1

Before Operating

1. Become familiar with the owner's manual beforeattempting to operate this equipment. See engineowner's manual for additional safety information.

2. Do not allow children to operate this equipment.

3. Do not operate this equipment in the vicinity ofbystanders.

4. Carbon monoxide can be extremely dangerous inenclosed areas; do not run the machine in an en-closed area. The exhaust from the engine containscarbon monoxide, which is colorless, odorless, andtasteless.

5. Do not allow hands, or any part of body or clothing,inside the feeding chamber, discharge chute, or nearany moving part.

6. Before inspecting or servicing any part of themachine, shut off the engine, and make sure allmoving parts have come to a complete stop.

Preparation

1. Obtain and wear safety glasses at all times whileoperating the machine. One pair of safety glasses isprovided with each chipper.

2. Avoid wearing loose-fitting clothing. Never operate

Your safety and the safety of others is very important.We have provided important safety messages in thismanual and on the machine. Please read these messagescarefully.

A safety message alerts you to potential hazards thatcould hurt you or others. Each safety message ispreceeded by one of three words: DANGER,WARNING, or CAUTION.

CAUTION

You WILL be KILLED orSERIOUSLY HURT if you don'tfollow instructions

You CAN be KILLED orSERIUOLSY HURT if you don'tfollow instructions.

You CAN be HURT or DAMAGEmachine if you don't followinstructions.

DANGER

WARNING

3

S E C T I O N 1

5. Do not allow processed material to build up in thedischarge area; this may prevent proper dischargeand can result in kickback of material through thefeed opening.

6. Do not attempt to operate the chipper with any ofthe guards, deflectors, or shrouds removed. Keepaway from moving parts.

7. Keep all guards, deflectors, and shrouds in goodworking condition.

8. Always stand clear of the discharge area whenoperating this machine.

9. Keep your face and body back from the feed opening.

10. Do not overreach. Keep proper balance and footingat all times.

11. Do not transport or move machine while the ma-chine is running.

12. If the machine becomes clogged, shut off engine.Allow machine to come to a complete stop beforeclearing debris.

13. On electric start models, disconnect cables frombattery before doing any inspection or service.

14. Do not tamper with the engine governor settings onthe machine; the governor controls the maximumsafe operating speed and protects the engine and allmoving parts from damage caused by over-speed.

Additional Safety Rules for PTOModels

1. Connect 3 pt. hitch pins and snap pins, connect PTOshaft and have leg stands downa and secure when inuse.

2. To move the unit: shut off the PTO, lift 3 pt. hitch,and adjust leg stands if needed.

3. Keep guards and shields in place at all times whileoperating. Always disengage tractor PTO and shutoff engine before removing guards or shields.

4. Keep hands, feet, and clothing away from all PTOdrive parts.

5. Never clean, lubricate, or adjust the chipper/shred-der when it is running.

6. Never wear loose jackets, shirts, shirt sleeves or

pants when working around PTO.

7. Before starting tractor always make sure transmis-sion is in neutral or park and PTO is disengaged.

WARNING! Recommended tractor PTO horsepower is 15HP to 30 HP. Use of these units on tractors above 30 PTO

horsepower may cause belt and machine damage in overloadconditions.

Additional Safety Rules for Towing

1. Always connect hitch safety chains. Make suretrailer hitch bolts are tight and secure. Do notattempt to tow the trailer if vehicle is not equippedwith a 2" ball.

2. Maximum towing speed should not exceed 55M.P.H. Inflate tires to manufactures specs. as statedon the tire sidewall. Check wheel lug bolts periodi-cally to be sure they are tight and secure.

3. Make sure that the jack stand on trailer is in the UPposition to clear the ground during towing. Place thejack stand on a level surface and secure it in theDOWN position before use.

4. Shut off fuel supply to engine when towng.

5. Disconnect spark plug wire when towing.

Maintenance and Storage

1. When this equipment is stopped for servicing,inspection, storage, or to change an accessory, makesure that the spark plug or PTO is disconnected.

2. Store the machine out of the reach of children andwhere fuel vapors will not reach an open flame orspark. For storage periods of three months or more,drain the fuel and dispose of it in a safe manner.Always allow the machine to cool before storing.

Bolts (SAE GR5)Size Ft. Lbs.5/16" 203/8" 35

ScrewsSize Ft. Lbs.5/16" Set 15#10-24 Set 3

Torque ChartStandard minimumtightening torque fornormal assemblyapplications.

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S E C T I O N 1

PN 17846

Safety and instruction decals are located on the chipper frame and engine. Replace any decal that is damaged orunreadable. For location of safety decals on the chipper frame, see parts drawings and lists in section 4.

NOTE: For engine safety and instruction decals, see engine owner's manual or contact the engine manufacturer.

1.2 Safety Decals

Part #17837

Part #16085

Part #17423

Part #16033

Part #16408

5

Assembly1. Remove from crate.

2. Place hopper assembly on top of shredder frame.The tabs on the bottom of the hopper should beplaced inside of the shredder frame. Secure with 115/16" x 3/4" Bolts, washers and locknuts. Insert thebolts from the inside of the hopper outwards.

3. Connect 3 pt. mounts on chipper/shredder andtractor (a special bushing kit is needed for category2 & 3 hitches). Secure connection with snap rings.

4. Adjust leg stands so that the PTO drive shaft runsaas straight as possible. PTO shaft angle should notexceed 7o.

5. Connect PTO shaft between Chipper/Shredder andtractor. Make sure you are using the correct RPMmachine, there are two models, 540 rpm and 2000rpm. Do not operate machine at speeds differentthan specified on shield.

NOTE: Minimum & maximum telescoping on the PTO shaftis 18" to 26". This will leave a 4 inch overlap at maximumtelescoping distance.

NOTE: The maximum distance between the chipper/shredder and the tractor should not exceed 22-1/2 inches.

Your chipper/shredder may arrive totally or partiallyassembled. If your machine arrives partially assembled,you may need to perform the steps in this section.

2.1.1 Assembly Towable Models

1. Remove the chipper/shredder and hopper assemblyfrom shipping crate.

2. Place hopper assembly on top of shredder frame.The tabs on the bottom of the hopper should beplaced inside of the shredder frame. Secure with 115/16" x 3/4" Bolts, washers and locknuts. Insert thebolts from the inside of the hopper outwards.

3. Install rims and wheels onto trailer frame, using thewheel bolts supplied.

4. Using three 5/16" x 1" bolts, six 5/16" washers, andthree 5/16" locknuts, install the fender onto theexisting fender bracket on the chipper chute side ofthe unit. A washer is used on both the bolt head andthe nut in this application. Torque bolts and nuts to20 ft. lbs.

5. Using three 5/16" washers and three 5/16" nylocknuts, mount the left side fender onto the large beltguard. There are three weld stubs on the belt guardto which the fender is attached. Torque to 20 ft. lbs.

6. Insert trailer hitch into track on the bottom of thetrailer frame and secure with three 3/8" bolts,washers and nuts that connect under the trailerframe. Tighten to 35 ft. lbs. torque

7. Read and become familiar with the Engine OwnersManual. Be sure to fill the engine oil before startingthe machine.

8. Install 12 volt battery (not supplied) into tray onhitch assembly. Connect cables, be sure black cableis attached to negative battery terminal and red cableto positive terminal. Secure battery with angle andbolt. (NOTE: Battery size-Group U1 12 volt 32amp-250 cold cranking amps.)

9. Connect spark plug wire.

2.1.2 Assembly PTO Model

S E C T I O N 2

2

6

S E C T I O N 2

6. Never inspect or work on PTO drive area withoutfirst disengaging PTO and shutting off the tractorengine.

7. Start tractor engine and engage PTO drive clutch(refer to the tractors owner's manual). Increaseengine speed to rated PTO rpm position.

2000 RPM PTO Models

NOTE: When the tractor used has an electric PTO clutchand brake, a different PTO shaft should be used.

1. Remove existing PTO shaft shield

2. Remove existing PTO shaft from Chipper/Shredder.

3. Install new PTO shaft onto Chipper/Shredder.

4. Install new PTO shaft shield onto Chipper/Shredder.

5. Check slip clutch adjustment while the machine isrunning to ensure it is operating correctly. Adjust ifneeded.

2.1.3 Controls and Operation

Towable Models

1. Engine Throttle. Changes engine speed. (20 hp

There are two differenttypes of unclutchedPTO shaft kits availablefor the 2000 RPM units.Check the PTO end ofyour tractor to determineif you need a Male DriveShaft Kit (P/N 70912)or a Female Drive ShaftKit (P/N 70913). Thereis a Clutched PTO shaftKit (P/N 70885) fortractors with electricbrake on the PTO.

6

B

A

1,2,3

4

5

7

D C

7

S E C T I O N 2

engine)Turn knob clockwise for full throttle opera-tion. Turn knob counter clockwise for idle on warmup. Turn knob all the way down to shut engine off.(14 hp engine) Pull lever up for full throttle opera-tion. Push lever down for idle on warm up. Pushlever all the down to shut engine off. Refer toengine owners manual for further engine operatinginstructions.

2. Engine Choke. Use when starting cold engine. Pullto on position when starting. Push lever to ofposition when engine is running. Refer to engineowners manual for further operating instructions.

3. Key Switch. (Not Shown) located above recoildstarter on engine case. Activate starter switch,release switxh as soon as the engine is running. Donot crank starter for more than 10 seconds ordamage may result.

4. Engine Fuel Tank. Use unleaded fuel only.DONOT MIX OIL AND GASOLINE.

5. Trailer Hitch. Always use 2" ball and hook safetychains to towing vehicle.

6. Jack Stand. Always have up and clear from theground when moving the unit. When the in use,be sure jack stand is down and locked in positionwith the snap pin.

7. Foot Pedal. Used to engage rotor drive belt.

PTO Models

1. 3 pt. Hitch Connections. Mount Chipper/Shred-der to tractor. Connect direct for categorys 0 & 1. Abushing kit must be installed on 3 pt. connectionsfor category 2 hitches.

2. PTO Shaft. Connects tractor PTO to Chipper/Shredder Drive Shaft. Avoid angle greater than 200

up or down when unit is in use.

3. Leg Stands. Adjustable to allow proper driveshaftangle. Don not move machine unless the legs clearthe ground.

4. Jackshaft. Used for correct belt tension adjustment.

Common Parts

A. Shredder Hopper. Material to be shredded are fedthrough the hopper to the shredding knives.

B. Chipper Chute. Material to be chipped are fedthrough the chipper chute to the chipper blades.

C. Drive Belt Shield. Never remove shield whilethe unit is running.

D. Rotor Access Cover. Used to remove chipper bladesand service rotor assembly.

B

3

D

4 2

1

CA

8

2.1.4 Starting(Towable Model)

Caution: Move machine to a clear, level area outdoorsbefore starting. do not operate machine on a paved,

concrete, or gravel surface. do not operate in the vicinity ofbystanders. Make sure cutting chamber is empty before

starting.

1. Before starting, check engine oil level and fill ifnecessary. See engine owners manual for opera-tion and maintenance instructions.

NOTE: Some oil usage is normal. Check oil level with eachuse.

WARNING: Handle fuel (gasoline) with care. It ishighly flamable. Always use an approved

container and fill tank outdoors. Never add fuelto a running or hot engine.

2. Before starting, fill fuel tank with fresh, cleanunleaded regular gasoline. DO NOT MIX OILWITH GASOLINE.

3. Disengage clutch lever by pressing foot clutchpedal.

4. Place engine throttle lever at 3/4 - full open position.Place engine choke lever to choke position.

NOTE: When restarting a warm engine after a short shut downperiod, it may not be necessary to use full choke. If engine failstostart, move lever to run or partial choke.

5. Activate the starter switch. Release the key as soonas the engine starts. Do not crank for more than 10seconds. Repeat if necessary.

6. Move choke lever to run position after engine starts.Some choke may be needed until engine is fullywarmed up.

7. Once engine is running and no choke is needed,slowly let foot clutch pedal up. This will engagethe drive belt and the rotor will turn.

NOTE: If engine kills when engaging foot clutch pedal, eitheruse more choke or increase engine RPM. When the clutch isengaged the foot pedal may vibrate or chake until the engineand rotor have increased to full operating RPM.

2.1.4 Starting(PTO Model)

1. Start tractor engine and engage PTO drive clutch(See tractor owners manual). Increase engine speedto reated PTO RPM position.

4

2.1.5 Specifications &Recommendations

The Bear Cat chipper/shredder is designed to gind,shred, and chip a variety of materials into a more readilydecomposing or handled condition. The followingguidelines can be used to help get you started.

1. Shredding/Grinding. Small materials such asleaves, grass clippings, and gardendebris(cornstalks, plants, vines, etc.) can easily beprocessed through the shredder. Sticks and branchesshould be limited to 1-/2 inches in diameter and nolonger than 24 inches long to avoid excess whippingand wrapping. Wet materials may require use of thecoarse (large hole) or wet debris discharge screen toavoid plugging. The processed material can beplaced in a compost pile or spread on the ground asa mulch. The shredder can also be used to processsuch materials as newspapers, plastics, aluminumcans, milk cartons, etc. It may be necessary to use abranch, cardboard tube, leaf tamper or similar objectto help push material through the inlet guard. Whengrinding small dry matrial, use the optional fine(small hole) discharge screen.

WARNING! Do not reach into either feedingchamber or discharge area until engine is

stopped, spark plug wire disconnected and therotor has stopped turning.

2. Chipping. The chipper can be used to make chipsfrom branches up to 5 inches in diameter. Largerbranches may have to be trimmed so that the limbwill fit into the chipper chute. Several smallbranches can be grouped together and fed into thechipper chute at one time. Changing to the optionalmedium discharge screen will make smalled sizedchips. The processed chips can be used as a decora-tive mulch or placed in a compost pile.

2.2 Operation

2.2.1 Shredding (See Figure 4)

WARNING! Always stand clear clear of thedischarge opening when operating the machine.

Keep hands or any other part of the body orclothing out of inlet and discharge openings.

WARNING!! DUE TO THE AGRESSIVENESS OF THE5

SE C T I O N 2

9

MACHINE'S SHREDDING CAPABILITY, DO NOT ATTEMPTTO HOLD ON TO MATERIAL INTENDED FOR SHREDDINGONCE IT HAS BEEN PLACED IN THE HOPPER.

1. Place materials to be shredded (grass, leaves, gardenrefuse, sticks and branches less the 1-1/2 inches indiameter and 24 inches long, etc.) into the hopper. If

necessary,use a leaftamper,branch orother similarobject topush materialthrough theinlet guards.Feed mate-rial evenlyinto theshredder sothat theengine doesnot lug downor theshredderbecomesplugged.Attempting

to use the clutch to clear a plugged rotor will causebelt damage. Refer to Section 3, Clearing PluggedRotor, for instructions. Branches or items that plugor cause the machine to stall should be fed in moreevenly or put through the chipper chute.

2.2.2 Chipping (See Figure 5)

WARNING! Keep face and body away from the feedopening. Do not overreach. Keep proper balance and

footing at all times.

1. Select limbs that are between 3/4 and 5 inches indiameter; trim side branches off that cannot be bentover enough to fit into the chipper chute. Somesmall branches can be broken off on the chipperchute transport handle. Small diameter branchescan be held together in a bundle and fed insimultaneously.

2. Place limb, butt end first, into the chipper chuteuntil it contacts the chipping blades (See figure 5).

The actual feed rate of the limb into the chipper willdepend on the type of material being fed, thesharpness of the cutting blades and the size of themachine. Alternately insert and retract the limb orinsert continuously at a rate that will not kill theengine. Rotating the branch as it is being fed willimprove cutting action.

The chipping blades will dull with use and requireperiodic sharpening. Refer to Section 3, SharpeningChipper Blades, for instructions.

2.2.3 Stopping(Towable Models)

To stop the machine, proceede as follows:

1. Move throttle to slow position.

2. Disengage rotor clutch by pressing foot pedal.

3. Move throttle to stop position or turn off ignitionswitch and remove spark plug wire from spark plug.

4. Allow machine to come to a complete stop.

2.2.4 Stopping(PTO Models)

1. Move the tractor throttle to slow position.

2. Disengage the PTO lever and shut off the tractorengine.

3. Allow the machine to come to a complete stop.

Note: The rotor is heavy and has inertia that will make the rotorcontinue to turn for some time after the clutch has beendisengaged. You can tell that the rotor has come to a completestop when there is no noise, machine vibration, or the exposedend of the rotor shaft is not rotating. The stopping time can beshortened by inserting a branch into the chipper chute so itcontacts the blades and slows the rotor.

Figure 4

Figure 5

SE C T I O N 2

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SE C T I O N 3

Service and Maintenance

BeforeEachUse

Every10

Hours

Every25

Hours

Every50

Hours

Every100

Hours

Every200

Hours

Every300

Hours

Every800

Hours

Every1

years

Interval

Check Nuts & Bolts(Including Wheels &Tire Pressure)

Engine Oil

Replace Spark Plug

Air Filter Element

Replace Fuel Filter

Check Sharpness of Chipper Blades

Grease Bearings and Pivots

Indicates first hours of use.

Check Bolts: Chipper Blades

Check Drive Belt

Clean Machine

Inspection Items

Check

Clean

Replace

*

Note: (*) Service more frequently when used in dusty conditions

Check

Replace

Before inspecting or repairing any part of the machine, shut off the engine and make sure allmoving parts have come to a complete stop.

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3.1 Removing Discharge Screen

1. Remove the discharge screen by removing the two5/16 inch retaining bolts from the bottom of thescreen.

2. Pull the bottom of the screen outward. This willcause the screen to rotate off the lip on top and fall.

3. To reinstall the discharge screen, place the top lip ofthe screen into the slot under the top slope.

4. Rotate the screen so that the bolt holes align withthe holes in the chipper base and the plate buttsagainst the kicker bar.

5. Reinstall bolts and torque to proper specs.

3.2 Sharpening ChipperBlades

The chipper blades will eventually become dull, makingchipping difficult. It is recommended that the chipperblades are sharpened every 5-15 hours of chipperoperation. To remove the chipping blades forsharpening:

1. Remove the discharge screen by removing the 5/16inch retaining bolt and pulling the screen outward.

2. Romove the access cover on the chipper chute sideof the machine.

3. Rotate the rotor so that the bolts holding the chipperblade are most accessable.

4. Remove the two hex head bolts holding the bladeitself. Repeat for all four blades.

Grind the angled edge of the chipping blade to 45degrees (see figure 6): Grind the blades on a slow-speedwet grinder if possible, or have them sharpened by aprofessional. If you use a bench grinder, be careful whengrinding so that the blade material does not get too hotand change color–this will remove the blade's special

Service and MaintenanceBefore inspecting or servicing any part of themachine, shut off the engine, and make sure allmoving parts have come to a complete stop. Thechipping blades are sharp! Use care when workingon machine to avoid injury.

heat treated properties. Use short grinding times andcool with water. Try to remove an equal amount off eachblade to maintain balance. Replace the chipping bladesand tighten bolts to 20 ft. lbs.

NOTE: Never sharpen or grind on the back side of thechipper blade. This will cause the edge to roll and thechipping blade will be damaged, causing poor chipping andfeeding of material. Small imperfections, nicks, burrs, etc.on the flat side of the blade will not affect performance ofthe machine.

3.2.1 Chipping Blade SharpeningTips

Poor chipping performance is usually a result of dullchipping blades. If your chipper's performance hasdecreased, check for the following symptoms:

• Severe vibration when feeding material into thechipper.

• Small diameter branches do not self-feed.

• Chips discharge unevenly or have stringy tails–especially when chipping green branches.

Before you sharpen the chipping blades, check forpermanent damage. Replace the blade if:

• The blade is cracked (especially around the boltholes) or the edges are too deeply chipped to beground smooth.

• The base of the cutting edge is worn or has beenre-sharpened so that it is too close to the rotorchipping slot.

450

6

SE C T I O N 3

12

7

3.2.2 Setting Chipping BladeClearance

The chipping blades should clear the chipper blocklocated directly under the chipper chute by 1/16 inch to1/8 inch. To adjust the blade clearance, proceede asfollows:

1. Remove the lower belt guard, the discharge screenand the access cover.

2. Loosen the bushing bolts holding the pulley to therotor shaft on the front side.

3. Remove the cover cap on rotor shaft rear side.

4. Use a punch and hammer to to tap the lock collars ina direction opposite of normal rotation so that theyrotate and can be removed.

5. Using a rubber mallet tap the end of the rotorshaft to obtain 1/16 to 1/8 of an inch clearance (Seefigure 7). The blade clearance can be viewed

SE C T I O N 3

through the discharge opening. Rotate the rotor andcheck the cleanance on both chipping blades.

6. Once clearance has been set, the lock collars mustbe replaced to retain setting. Slip the lock collarsover the eccentric hub on the bearings. Using apunch and a hammer, rotate the lock collars in thedirection of shaft rotation (i.e. clockwise on the rearbearing and counter-clockwise on the front bearing)and "set" them with a positive hammer tap. Tightenthe lock collar set screws.

7. Loosen the bushing holding the belt pulley on therotor shaft. Move the pulley on the shaft so it isaligned directly below the similar pulley on theengine shaft (the pulley should be moved anequal but opposite amount the rotor was moved).

8. Replace the lower belt guard, discharge screen, androtor shaft cover.

13

3.3 Replacing Shredder Kit

Care must be taken to insure knives and spacers areinstalled properly to maintain rotor balance.

1. Remove discharge screen cover, discharge screenand rear side access cover.

2. Remove #10-24 nuts and bolts from the knife shafts.

3. Align shaft with access hole in rear of frame.

4. Using a small punch or rod, drive the shaft towardsthe access hole.

5. Remove spacers and shredder knives. Be carefull tokeep track of the order the spacers were installed onthe shafts so they can be returned to the originallocations. Reverse or replace knives and reassembleback onto the rotor. Install a new #10-24 nut andbolt.

6. Repeat steps #3 through #5 to assemble the otherthree shafts.

NOTE: Never reuse rotor shafts or bolts and nuts if theyshow signs of wear or abuse. Install new ones.

3.3.1 Cleaning Plugged Rotor(Towable Models)

WARNING! If the machine becomes plugged, shut off theengine, disconnect the spark plug wire and allow the

machine to come to a complete stop before clearing debris.Do not operate machine without proper guards and

screens in place.

1. Stop engine, disengage rotor clutch and allowmachine to come to a complete stop. Remove thespark plug wire.

2. Remove the discharge screen in place.

3. Clean the debris out of the shredding rotor. Turn therotor by hand to be sure it is free to rotate.

4. Replace discharge screen.

SE C T I O N 3

8

14

SE C T I O N 3

5. Replace spark plug wire, restart engine and resumeoperation.

3.3.2 Cleaning Plugged Rotor (PTOModels

Do not operate machine without proper guards andscreens in place.

1. Disengage PTO and shutoff tractor engine.

2. Remove the discharge screen.

3. Clean the debris out of the shredding rotor. Turnthe rotor by hand to be sure it is free to rotate.

4. Replace discharge screen.

5. Start tractor, engage PTO and resume operation.

3.3.3 Removing Rotor

Do not operate machine without proper guards andscreens in place.

1. Remove the discharge screen, belt guards and therotor shaft end cover.

2. Loosen the bushing bolts holding the drive pulley tothe shaft and remove the pulley.

3. Loosen the set screw in the lock collars. Using apunch and hammer, tap the lock collars in a direc-tion opposite of normal rotation so that they can beremoved.

4. Loosen the set screw in the center of the rotorassembly.

5. Remove the two 3/8x2-1/2" bolts running throughthe rotor shaft.

6. Using a rubber mallet or other soft hammer, drivethe shaft towards the chipper chute side of themachine.

7. Once the shaft has been removed, the rotor assemblycan be taken from the chamber through the dis-charge opening.

8. To ease reinstallation, smooth any divots or marks inthe shaft caused by the set screws. Clean shaft asmuch as possible before installing into machine.

3.3.4 Replacing Drive Belts (Towable

Models)

Check the condition of the drive belts annually or every30 hours of operation, whichever comes first. If the beltis cracked, frayed or worn, it should be replaced. Toreplace the belt, proceed as follows:

1. Depress the foot clutch pedal. Shut off the engineand remove the spark plug wire.

2. Remove the large belt guard.(4-5/26" Bolts)

3. Remove the inner belt guide from under the drivebelt.

4. Disconnect and plug the fuel line from the fuel tank.Remove the fuel tank from the frame assembly.

5. Adjust for correct belt tension by loosening the fourbolts the mount the engine to the frame and sliddingthe engine forward as much as possible.

6. Torque engine mount bolts, replace fuel tank andreconnect fuel line.

7. Install lower belt guide and start the engine to test ifbelt is tensioned correctly. If the belt continues to beloose, it will have to be replaced.

8. Replace large belt guard and resume operation.

9. To replace the drive belt,

1. Remove the large belt guard and lower belt guide.

2. Lift belt idler pulley off the belt and remove thebelt from the pulleys.

3. Install a new belt onto the pulleys and lower beltidler. Check belt tension before start-up. Install thelower belt guide.

4. Install the large belt guard and resume oepration.

3.3.5 Replacing Drive Belts (PTOModels)

Check the condition of the drive belts annually orevery 30 hours of operation, whichever comes first.If the belt is cracked, frayed or worn, it should bereplaced. To replace the belt, proceed as follows:

1. Disengage PTO and shut off tractor engine.

2. Remove PTO shaft from tractor and disconnectmachine from 3 pt. hitch.

15

SE C T I O N 3

3. Remove the round shield connected to the belt guardthe covers the PTO shaft by removing the two 5/16"nuts.

4. Remove the PTO shaft from the chipper/shredder byloosening the two set screws and pulling the shaftoff.

5. Loosen the bolts mounting the jack shaft pillowblockand move the shaft towards the frame so beltscan be removed.

6. Install new belts and make sure pulleys are allignedto within 1/16". If not adjust pulleys.

7. Slide jack shaft away from frame. Tighten bolts sothat 1/4" deflection at center of belt span is obtainedwith 10 lb. force applied at the center of the span.Make sure the jack shaft is aligned parallel to therotor shaft before tightening the pillow block bolts.

8. Reinstall belt shields and guards. Install PTIO shaftand tighten the two set screws. install pTO shield.Never run PTo without all sjields in place.

3.3.6 Trailer Service Tips

1. Check wheel bolt torque every 10 hours of towinguse.

2. Check air pressure in tire every 10 hours. Fill to 60PSI.

3. Check and repack wheel bearings with grease everyyear.

3.3.7 Additional Service andMaintenace Tips.

1. Service engine according to engine owners manual.

2. Every 10 hours of operation, all bolts and otherfasteners should be checked for correct torque.

3. The PTO model has 2 greasable bearings on therotor shaft. There are also two greasable bearingson the main jack shaft under the small belt guard.These bearing need only to be greased once per yearunder normal working conditions. Be carefull not todamage seals on the brearing by over greasing.

4. The PTO shaft also has 4 grease zerks that can belightly greased every 50 hours of use.

5. Remove the discharge screen (all models) daily toavoid material buildup under normal mountingsurfaces. Clean away material and reinstall screen.

3.4 Service Accessories

Description Part Number

Towable PTO

Discharge ScreensFine 70703 70703Medium 70531 70531Coarse 70332 70332Wet Debris Screen 70559 70559

Goggles (One pair supplied with machine) 17842 17842Maintenance Kit (Includes spark plug, air filer, oil filter, v-belt) 14 hp 70452Maintenance Kit (Includes spark plug, air filer, oil filter, v-belt) 20 hp 71043Leaf Tamper 70649 70649Tool Steel Chipper Blades (Set of 4) 70453 70453Shredder Kit 70972 70456Light Kit 70454 70454Collection Bag 17854 17854Spark Plug 160692000 PTO Male Chuted Drive Shaft 708852000 PTO Male Drive Shaft 709122000 PTO female Drive Shaft 709133 pt. Hitch Bushing Kit, Category 2 16022

16

TROUBLESHOOTING

Troubleshooting

SuggestedRemedies

a) Use proper setting

b) Fill fuel tankc) See your dealer

a) Use branch orsimilar object toclear discharge

b) Clear Rotor

a) Use branch orsimilar object toclear discharge

b) Adjust clearancec) Sharpen blades

a) Use branch orsimilar object toclear discharge

b) Clear rotor, feedmaterial intoshredder moreevenly.

c) Alternately feed drymaterial, or installcoarse dischargescreen or wet debrisscreen.

a) Lift clutch levermore slowly

b) Clear rotor

a) Rotate branch ormaterial whenfeeding to cutcompletely

b) Adjust clearancec) Install wet debris

discharge screen

Probable Cause

a) Improper controlsettings

b) Lack of fuelc) Internal Problems

a) Obstructeddischarge

b) Plugged Rotor

a) Obstructeddischarge

b) Improper bladeclearance

c) Dull chipper blades

a) Obstructeddischarge

b) Plugged rotorc) Green material will

not discharge

a) Engaging clutch toofast

b) Plugged Rotor

a) Stringy, greenmaterial bypasseschipper blades

b) Improper bladesclearance

c) Plugged dischargescreen

Problem

1. Engine will not start

2. Engine or rotor stallsor stops

3. Hard to feed Chipperrequiresexcessive powerrequired

4. Shredder requiresexcessive power orstalls

5. Engine stalls or beltsqueals whenengaging clutch

6. Material fromchipper wrapsaround rotor shaft

Reference

Engine Manual

Section 3

Section 3

Section 3

Section 3

Section 3

Declaration of Conformity

The undersigned manufacturer:

Crary Industries, Inc. 237 NW 12th Street

P.O. Box 849 West Fargo, ND 58078-0849

Declares that hereunder specified unit:

CHIPPER SHREDDER

Brand: Crary Bear Cat Type: PTO driven Chipper/Shredder Model Number: 70554S

Complies with the requirements of:

Machinery Directive 2006/42/EC

Garden equipment-Integrally power shredders/chippers-Safety EN13683:2003 + A3 2009 EN ISO 12,100, Part 1-Safety of Machinery-Basic Concepts, General Principles for Design Noise Emissions Directive 2000/14/EC

-Conformity Assessment Procedure: Annex V (Use of harmonized standard EN ISO 3744:2010) Sound Pressure Level: 99 dB LPA Guaranteed Sound Power Level: 113 dB LWA 70554S Serial number X00117 and up

West Fargo, ND 58078-0849 June 29, 2011 CRARY INDUSTRIES, INC. The authorized representative in Europe who is authorized to compile the technical file: Company: Atlantic Bridge Limited Address: Atlantic House, PO Box 4800 Earley, Reading RG5 4GB, United Kingdom ______________________________ Arlan Mathias Mr. Phillip Wicks Senior Project Engineer

Data contained in this document pertains only to machines sold in areas that require CE compliance standards. To identify if your machine is CE compliant, it will have the following CE mark decal:

Box 849West Fargo, ND 58078(701) 282-5520 (800) 247-7335FAX: (701) 282-9522

HEALTH WARNINGGASOLINE, DIESEL, AND

OTHER PETROLEUM PRODUCTSHarmful or fatal if swallowed.Long-term exposure to vapors has caused cancer inlaboratory animals.

• Avoid prolonged breathing of vapors.• Keep face away from nozzle and gas tank/container

opening.• Never siphon by mouth.

Failure to use caution may cause serious injury or illness.

WARNINGCHEMICALS KNOWN TO THE STATE OF CALIFOR-NIA TO CAUSE CANCER, BIRTH DEFECTS, OROTHER REPRODUCTIVE HARM ARE FOUND INGASOLINE, DIESEL, CRUDE OIL, AND MANY OTHERPETROLEUM PRODUCTS AND THEIR VAPORS, ORRESULT FROM THEIR USE.

READ AND FOLLOW LABEL DIRECTIONS AND USECARE WHEN HANDLING OR USING ALL PETRO-LEUM PRODUCTS.

ENGINE EXHAUST FROM THIS PRODUCT CON-TAINS CHEMICALS KNOWN TO THE STATE OF CALI-FORNIA TO CAUSE CANCER, BIRTH DEFECTS, OROTHER REPRODUCTIVE HARM.