Page 1
OWNER'S MANUAL
Manual PN 13987-00
Rev. 0204
Companion to 13988-00
6 & 8 INCH CHIPPERS
Page 2
DEAR BEAR CAT CUSTOMER,
Before you Begin
Thank you for purchasing a Crary Bear Cat product. The Bear Cat line is designed,
tested, and manufactured to give years of dependable performance. To keep your
machine operating at peak efficiency, it is necessary to adjust it correctly and make
regular inspections. The following pages will assist you in the operation and
maintenance of your machine. Please read and understand this manual before
operating.
How to Contact
Bear Cat
A
DDRESS
Crary Bear Cat
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 machine, please call or write your
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 machine. Please
take the time to fill in the information requested on the card. When you send your
completed card to us, we will register your machine and start your coverage under our
limited warranty.
EMISSION INFORMATION
WARNING
The engine on your power equipment, like most outdoor
power equipment, is an internal combustion engine that
burns gasoline, a hydrocarbon fuel. Therefore, your power
equipment must be equipped with a spark arrester muffler in
continuous effective working order. The spark arrester must
be attached to the engine exhaust system in such a manner
that flames or heat from the system will not ignite flammable
material.
237 NW 12th Street
PO Box 849
West Fargo, ND
58078
P
HONE
800-247-7335
701-282-5520
Fax: 701-282-9522
E
MAIL
opesales@crary.com
service@crary.com
H
OURS
M-F, 8 a.m. to 5
p.m. Central Time
WARNING TO ALL CALIFORNIA AND OTHER STATES
OPERATING OUTDOOR POWER EQUIPMENT
Under California Law and under the laws of several other
states you are not permitted to operate an internal
combustion engine using hydrocarbon fuels on any forest
covered, brush covered or grass covered land or on land
covered with grain hay or other flammable agricultural crop,
without an engine spark arrester in continuous effective
working order.
Failure of the owner/operator of the equipment to comply
with this regulation is a misdemeanor under California law,
and may also be a violation of other state and or federal
regulations, laws, ordinances, or codes. Contact your local
fire marshal or forest service for specific information about
what regulations apply in your area.
The standard muffler installed on the engine is not equipped
with a spark arrester. One must be added before use if this
machine is intended to be used in an area where a spark
arrester is required by law. Contact the local authorities if
these laws apply to you. See your authorized engine dealer
for spark arrester options.
Page 3
Limited Warranty
Crary Bear Cat chippers are warranted for 1 year from date of sale for consumers , commercial, or rental
operations.
Within the above stated period, Crary Co. will replace any part(s) found to be defective in material and/or
workmanship, after the receipt of the part in our plant. Labor costs to replace these defective parts will
be paid at a Crary established labor rate and time allowed (flat rate) for repair. All transportation charges
incurred in shipping 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 follow
those instructions listed in the service manual. This warranty is also in lieu of all other expressed
warranties and voids any implied warranty as to the merchantability or fitness of the product for a
particular purpose and of any other obligation on the part of Crary Co. Some states do not allow
limitations on how long the implied warranty lasts, so the above limitation may not apply to you.
This warranty applies only to parts or components that are defective, and does not cover necessary
repair due to normal wear, misuse, accidents, or lack of proper maintenance. This includes belts,
pulleys, and chipper blades. Regular routine maintenance of the unit to keep it in proper operating
condition is the responsibility of the owner.
All warranty repair reimbursable under the Crary Co. warranty must be performed by an authorized Bear
Cat service dealer using Bear Cat approved replacement parts. Repair or attempted repair by anyone
other than an authorized Bear Cat service dealer is not reimbursable under the Crary Co. warranty. In
addition, these unauthorized repair attempts may result in additional malfunction, the correction of which
is not covered by warranty.
Crary Co. is not liable for indirect, incidental, or consequential damages in connection with the use of
this product including any cost or expense or providing substitute equipment or service during periods of
malfunction or non-use.
Some states do not allow the exclusion of incidental or consequential damages, so the above exclusion
may not apply to you. This warranty gives you specific legal rights. You may also have other rights that
vary from state to state.
Be sure to note the serial number in any correspondence with Crary Co. or any authorized Bear Cat
dealer.
Crary Company
A Division of TerraMarc Industries
237 12th St. NW • P.O. Box 849
West Fargo, ND 58078-0849
(701)282-5520 • FAX: (701)282-9522
www.bearcatproducts.com
Page 16" & 8" Bear Cat Chipper Operator’s Manual
Page 4
Contents
SECTION DESCRIPTION PAGE
SERIAL NUMBER LOCA TION...............................................................................................................................3
REPLACEMENT PARTS.......................................................................................................................................3
1.0 SAFETY...................................................................................................................................4
1.1 THE SAFETY ALERT SYMBOL ....................................................................................................................4
1.2 BEFORE OPERA TING..................................................................................................................................4
1.3 OPERA TION SAFETY ..................................................................................................................................5
1.4 MAINTENANCE AND STORAGE SAFETY ....................................................................................................6
1.5 TOWING SAFETY ........................................................................................................................................6
1.6 BA TTERY SAFETY.......................................................................................................................................6
2.0 ASSEMBL Y .............................................................................................................................7
2.1 ASSEMBLING THE MACHINE ......................................................................................................................7
2.2 ATT ACH THE CHIPPER CHUTE ....................................................................................................................8
2.3 ATT ACH THE OPTIONAL CHUTE EXTENSION TRAY.....................................................................................8
2.4 ATTACH THE BLOWER DISCHARGE TUBE .................................................................................................9
2.5 CONNECT THE CONTROL CABLE ...............................................................................................................9
2.6 ADJUSTING THE HYDRAULIC FEED CONTROL CABLE ...............................................................................9
2.7 INST ALLING THE BA TTERY........................................................................................................................10
3.0 CONTROLS ..........................................................................................................................11
3.1 MACHINE CONTROLS ............................................................................................................................... 11
4.0 OPERATION..........................................................................................................................12
4.1 STAR TING THE MACHINE ..........................................................................................................................12
4.2 STOPPING THE ENGINE............................................................................................................................12
4.3 ROT ATING THE CHIPPER BASE ................................................................................................................13
4.4 CHIPPING .................................................................................................................................................13
4.5 HYDRAULIC FEED OPERA TION (72620 & 74824).......................................................................................14
4. 6 HYDRAULIC FEED COMPONENT LOCA TIONS (72620 & 74824).................................................................14
5.0 SERVICE & MAINTENANCE ...............................................................................................15
5.1 INST ALLING THE ROTOR (DISK) LOCK ......................................................................................................15
5.2 SHARPENING CHIPPER BLADES .............................................................................................................15
5.3 REPLACING CHIPPER BLADES ................................................................................................................16
5.4 SETTING CHIPPER BLADE CLEARANCE ..................................................................................................16
5.5 REPLACING DRIVE BELTS ........................................................................................................................16
5.6 ADJUSTING DRIVE BELTS .........................................................................................................................17
5.7 CLEARING A PLUGGED ROTOR ................................................................................................................ 17
5.8 REP AIRING OR REPLACING ROT OR BEARINGS.......................................................................................17
5.9 GREASEABLE BEARINGS AND PIVOTS ...................................................................................................18
5.10 OTHER SERVICE TIPS............................................................................................................................... 21
5.11 TRAILER SERVICE TIPS.............................................................................................................................21
5.12 HYDRAULIC FLUID (MODELS 72620 & 74824)............................................................................................21
5.13 HYDRAULIC PUMP ST ART UP PROCEDURE (72620 & 74824) ...................................................................21
5.14 HYDRAULIC FEED MAINTENANCE (72620 & 74824) ..................................................................................22
6.0 TROUBLESHOOTING ..........................................................................................................23
6.1 GENERAL TROUBLESHOOTING ................................................................................................................23
6.2 HYDROST ATIC PUMP TROUBLESHOOTING (72620 & 74824) ....................................................................24
7.0 SPECIFICATIONS.................................................................................................................25
7.1 SPECIFICA TIONS....................................................................................................................................... 25
7.2 BOL T TORQUE........................................................................................................................................... 26
Page 2
6" & 8" Bear Cat Chipper Operator’s Manual
Page 5
SERIAL NUMBER LOCATION
Always give your dealer the serial number of your Crary Bear Cat product when ordering parts, requesting service or any
other information.
Please record the serial number in the space provided below and on the warranty and registration card. The serial number
is located on the top chipper housing.
WARNING
To prevent personal injury or property damage: Disengage the source providing power to the machine and
make sure that all moving parts have come to a complete stop before obtaining serial number, servicing, adjusting or repairing.
Serial Number ___________________
YXXXXX
Serial Number Decal
REPLACEMENT PARTS
Only genuine Bear Cat replacement parts should be used to repair the machine. Bear Cat replacement parts are available
from your Bear Cat dealer. To obtain prompt, efficient service, remember to give the dealer the correct part description and
serial number of the machine.
Please be sure to provide the following information:
1. The SERIAL NUMBER of your machine.
2. The PART NUMBER of the part.
3. The PART DESCRIPTION.
4. The QUANTITY needed.
Page 36" & 8" Bear Cat Chipper Operator’s Manual
Page 6
1
Section
Safety
1.1 THE SAFETY ALERT SYMBOL
This is the safety alert symbol. It is used in this Owner /
Operator’s Manual and on your machine to alert you to
potential hazards.
Whenever you see this symbol, read and obey the safety
message that follows it. Failure to obey the safety message
could result in personal injury, death or property damage.
DANGER
Indicates an imminently hazardous situation that, if not
avoided, will result in death or serious injury.
1.2 BEFORE OPERATING
1. Read this Owner / Operator’s manual. Be completely
familiar with the controls and the proper use of this equipment.
2. Before inspecting or servicing any part of the machine,
wait for all parts to stop moving. Be aware that rotating
parts slow down gradually after power is stopped.
3. Keep safety decals clean and legible. Replace missing
or illegible safety decals.
4. Familiarize yourself with all of the safety and operating
decals on this equipment and on any of it’s attachments
or accessories.
5. Do not allow children or any person unfamiliar with the
use of the unit to use this machine.
WARNING
Indicates a potentially hazardous situation that, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that, if not
avoided, may result in minor or moderate injury.
6. Keep the area of operation clear of all persons, particularly small children. Keep bystanders at least 50 feet
(15 meters) away from the area of operation.
7. Do not run this equipment in an enclosed area. Do not
operate this equipment in or near buildings, windows,
or air conditioners.
Page 4
6" & 8" Bear Cat Chipper Operator’s Manual
Page 7
SAFETY
8. If needed, always use an approved fuel container. Keep
open flames, sparks, smoking materials, and other
sources of combustion away from fuel.
9. Do not operate this machine if you are under the influence of alcohol, medications, or substances that can
affect your vision, balance, and judgement. Do not operate if tired or ill. You must be in good health to operate this machine safely.
10. Wear safety glasses at all times while operating this
machine.
11. Use only in daylight or good artificial light.
12. Never use without proper guards in place.
13. Avoid wearing loose fitting clothing. Never operate this
machine wearing clothing with drawstrings that could
wrap around or get caught in the machine.
1.3 OPERATION SAFETY
CAUTION
Material can shift suddenly and cause serious injury or
death. Wear eye and hearing protection.
DANGER
Keep hands, feet and clothing out of inlets and discharge
openings while machine is operating to avoid serious personal injury.
1. Keep your body and clothing away from any moving
part of the machine.
2. Restrain pieces of metal, rocks, bottles, cans, and foreign objects from entering the machine.
3. Shut off machine immediately if the cutting mechanism
strikes any foreign object or the machine starts making
an unusual noise or vibrating. Allow the machine to
stop completely. After machine stops:
A. Inspect for damage.
B. Replace or repair any damaged parts.
C. Check for and tighten any loose parts.
4. Stand clear of the discharge area when operating this
machine.
14. Check that all screws, nuts, bolts, and other fasteners
are properly secured before starting the machine. Check
all screws, nuts, bolts, and other fasteners for proper
tightness to ensure everything is in proper working condition once every 8 hours of operation.
15. Keep all guards, deflectors, and shields in place and in
good working condition.
16. Do not transport or move machine while the machine is
running.
5. Keep your face and body away from the feed opening.
6. Do not climb on machine when operating. Keep proper
balance and footing at all times.
7. Keep the machine clear of debris and other accumulations.
8. Set up your work site so you are not endangering traffic
and the public. Take great care to provide adequate warnings.
9. Ensure debris does not blow into traffic, parked cars, or
pedestrians.
10. Check the bolts for correct torque every 8 hours of operation. (see section 7.2)
11. If the machine becomes clogged, shut off engine and
allow machine to stop completely, before clearing debris.
Page 56" & 8" Bear Cat Chipper Operator’s Manual
Page 8
SECTION 1
1.4 MAINTENANCE AND STORAGE
SAFETY
NOTE
Always read and follow the engine owner's manual or contact the engine manufacturer for engine safety instructions and decals.
1. Disconnect the spark plug wire when this equipment is
stopped for service, inspection, storage, or to change
an accessory.
2. Replace any missing or unreadable safety decals. Refer to the parts manual for part numbers when ordering
safety decals from an area Bear Cat dealer.
3. Store the machine out of reach of children and where
potential fuel vapors will not reach an open flame or
spark.
4. Allow machine to cool before storing in an enclosure.
5. Drain the fuel and dispose of it in a safe manner for
storage periods of three months or more.
1.5 TOWING SAFETY
1.6 BATTERY SAFETY
1. Improper use and care of the battery on electric start
models can result in serious personal injury or property
damage. Always observe the following safety precautions.
2. Poison/Danger - Causes Severe Burns. The battery
contains sulfuric acid. Avoid contact with skin, eyes or
clothing. Keep out of reach of children.
ANTIDOTE-External Contact: Flush immediately with
lots of water.
ANTIDOTE-Internal: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg or vegetable oil. Call a physician immediately.
ANTIDOTE-Eye Contact: Flush with water for 15 minutes. Get prompt medical attention.
3. The battery produces explosive gases. Keep sparks,
flame or cigarettes away. Ventilate area when charging
battery. Always wear safety goggles when working near
battery.
4. The battery contains toxic materials. Do not damage
battery case. If case is broken or damaged, avoid contact with battery contents.
1. Rotate the discharge tube to face the opposite direction
of the towing vehicle before towing.
2. Connect hitch safety chains. Tighten and secure trailer
hitch bolts. Do not attempt to tow the trailer if the vehicle is not equipped with a 2” ball.
3. Do not exceed maximum towing speed, indicated on
tire sidewall. Inflate tires to manufacturers specifications as stated on the tire sidewall.
4. Check wheel lug bolts periodically to ensure they are
tight and secure.
5. Make sure the jack stand on trailer is in the UP position
during towing.
6. Never allow passengers to ride on the chipper.
7. If applicable, shut off fuel supply when towing.
Neutralize acid spills with a baking soda and water solution. Properly dispose of a damaged or worn-out battery. Check with local authorities for proper disposal
methods.
5. Do not short circuit battery. Severe fumes and fire can
result.
6. Before working with electrical wires or components, disconnect battery ground (negative) cable first. Disconnect positive cable second. Reverse this order when
reconnecting battery cables.
DANGER / POISON
SHIELD EYES
EXPLOSIVE GASES
CAN CAUSE
BLINDNESS OR
INJURY
KEEP OUT OF THE REACH OF CHILDREN. DO NOT TIP. KEEP VENT CAPS TIGHT AND LEVEL.
NO
• SPARKS
• FLAMES
• SMOKING
SULFURIC
ACID
CAN CAUSE
BLINDNESS OR
SEVERE BURNS
FLUSH EYES
IMMEDIATELY
WITH WATER
GET
MEDICAL
HELP
FAST
Page 6
6" & 8" Bear Cat Chipper Operator’s Manual
Page 9
2
Section
Assembly
Your chipper may arrive totally or partially assembled. If your
chipper arrives partially assembled, you may need to perform
the steps in this section. Refer to Figure 2.1 during
assembly.
2.1 ASSEMBLING THE MACHINE
1. Remove from shipping crate.
2. Support the frame on wood blocks or other support device.
3. Mount the two tires and rims to the axle assembly with
the lug nuts (supplied).
4. Mount the trailer hitch assembly to the frame using three
3/8 X 3-1/2" bolts and locknuts (supplied).
5. Attach the Chipper Chute (see Section 2.2).
6. Attach the Optional Chute Extension Tray (see Section
2.3). The Chute Extension Tray is purchased separately.
7. Attach the Blower Discharge Tube (see Section 2.4).
8. Connect and adjust the Control Cable (see Section 2.5
and 2.6).
9. Install battery (see Section 2.7).
10. Check engine oil (see engine owner's manual) and fill
the gas tank with fresh gasoline.
11. Fill the hydraulic reservoir 2/3 full (see Section 5.12).
12. Your chipper should be ready to use.
IMPORTANT
DO NOT ATTEMPT TO START THE ENGINE AT THIS
TIME. Wait until you have read the complete Owner's
Manual.
Figure 2.1 - Chipper Assembly
Page 76" & 8" Bear Cat Chipper Operator’s Manual
Page 10
ASSEMBLY
2.2 ATTACH THE CHIPPER CHUTE
Do not operate this unit without the chipper chute correctly
installed. Rotating cutting blades can cause serious personal
injury.
Mount the chipper chute to the hydraulic feed using eight
3/8" x 1" bolts and locknuts. To insert the top bolts, you
may need to temporarily lift the grab roller with a pry bar.
Use three bolts on each side and two on the bottom (see
Figure 2.2).
Hydraulic
Feed
Chipper
Chute
2.3 ATTACH THE OPTIONAL CHUTE
EXTENSION TRAY
The Optional Chute Extension Tray is purchased seperately.
1. After mounting the chute to the hydraulic feed, slide the
chute extension tray over the chipper chute as shown
in Figure 2.3. Make sure that you position the lip on
the extension tray behind the lip on the chipper
chute. Align the five bolt holes in the chute extension
tray with the bolt holes in the extension hinge.
2. Insert a 3/8" x 1" carriage bolt (included in owner's kit
packaged with the chipper) through the two outside holes
on the extension tray and the extension hinge. Secure
the bolts with washers and nuts.
3. Insert one 3/8" x 1" carriage bolt through the end of the
chute support and middle holes on the extension hinge
and extension tray. Secure the bolts with washer and
nuts. Secure with hairpin clips.
Hairpin Clip
Figure 2.2 - Chipper Chute Assembly
Extension
Hinge
Extension
Tray
Chipper
Chute
Position this
lip behind the
lip on the
chipper chute
shown below.
Hold the
extension tray
directly above
the chipper
chute and slide
it downward.
Feed Control
Lever
Page 8
Figure 2.3 - Chipper Chute Extension Tray Assembly
6" & 8" Bear Cat Chipper Operator’s Manual
Page 11
ASSEMBLY
2.4 ATTACH THE BLOWER DISCHARGE TUBE
1. Attach the blower discharge tube to the mounting flange
on the chipper frame. Half of the mounting clamp is
already attached to the tube. Slide the tube into the
flange and tighten the bolts to secure it. Install the
second half of the clamp to the tube and flange.
2. Grease the zerk and tighten the nuts completely.
3. Loosen each nut one turn and attempt to rotate the
tube. If it does not rotate freely, loosen each nut 1/2
turn until it rotates freely.
4. Rotate the tube 360 degrees and lock it in place with
the handle to make sure it is mounted correctly. (Note:
Keep nuts as tight as possible yet free to turn.).
2.5 CONNECT THE CONTROL CABLE
1. Remove the clevis assembly from the hydrostatic control cable end (see Figure 2.4). Remove one nut on the
cable end. Insert the cable end into the hole in the cable
anchor weldment. Replace the nut and the clevis assembly.
2.6 ADJUSTING THE HYDRAULIC
FEED CONTROL CABLE
Figure 2.5 shows the hydraulic feed control cable assembly
and the detent position slots. The cable is attached and
adjusted from the factory, but it should be checked and
adjusted as needed before use. The hydraulic feed control
lever has three positions:
Forward - lever moved toward the operator.
Neutral - lever in center position.
Reverse - lever moved away from operator; reverse has no
detent position.
When the operator moves the control lever to the neutral
position, the detent ball should be positioned in the rear
detent slot (see Figure 2.5). The feed roller should come to
a complete stop when the control lever is in the neutral
position. If it does not stop, adjust the clevis assembly on
the control cable as follows:
1. If the control lever is in neutral and the roller creeps
forward, the cable is too short; adjust it to a longer length.
2. If the roller creeps in a reverse direction, the cable is
too long; adjust it to a shorter length.
3. Adjust the cable as needed to compensate for cable
stretch.
2. Attach the clevis assembly to the center hole on the
feed control lever.
3. Adjust the cable detent ball to hold the control arm in
the forward position or neutral position detents.
Clevis
Assembly
Nut
Insert cable
through hole
Figure 2.4 - Control Cable Assembly
Detent
Ball
Feed
Control
Lever
Cable
Anchor
Weldment
Hydrostat
Control
Cable
Clevis Assembly
Neutral
Detent
Chipper Chute
Adjust cable here as needed.
Figure 2.5 - Control Cable and Detent Position Slots
Forward
Detent
Page 96" & 8" Bear Cat Chipper Operator’s Manual
Page 12
ASSEMBLY
2.7 INSTALLING THE BATTERY
NOTE
The battery that was shipped with the machine was
shipped dry. The battery will need to be serviced before
installation.
WARNING
To avoid sparks and a possible explosion or fire due to a
short circuit:
1. Do not touch the positive (+) battery terminal and
any surrounding metal with tools, jewelry or other
metal objects.
2. When installing battery cables, connect positive (+)
cable first and negative (-) cable last.
1. The machine may or may not have been shipped with a
battery. If you did not receive a battery with your machine, you will need to purchase one.
10. Install the negative (-) cable on the negative (-) battery
terminal using a 5/16 X 1” hex head bolt and 5/16 nylock
nut. There is no insulating boot for this terminal.
11. Secure battery box cover.
IMPORTANT
DO NOT ATTEMPT TO START THE ENGINE AT THIS
TIME. Wait until you have read the complete starting
instructions in the Operation Section of this Manual.
2. Use a battery that meets or exceeds the following specifications:
Battery, Category, Lawn and Garden
BCI Group Size U1
200-250 CCA
7-3/4” X 5-3/16” X 7-5/16”
Suggested Source: Exide Cutting Edge, Type GT-H
3. If you received a battery with your machine, proceed to
the next step.
4. Remove or destroy any sealing device which may have
been used to close or restrict the vent openings.
5. Remove battery vent caps and fill cells until baffle plate
is covered with 1.25” of electrolyte at 80° F. Battery
and electrolyte must be at a temperature above 60° F,
but should not exceed 100° F.
6. After filling, the battery may need to be charged. See
the battery manufacturer's Owner's Manual for instructions on charging the battery.
7. Place charged battery in battery box on chipper.
8. Remove key from engine ignition.
9. Install the positive (+) battery cable to positive (+) battery terminal using a 5/16 X 1” hex head bolt and 5/16
nylock nut. An insulating boot is loosely installed on
this cable. Slide the insulating boot over the terminal,
making sure that the terminal is completely covered.
Page 10
6" & 8" Bear Cat Chipper Operator’s Manual
Page 13
3
Section
Controls
3.1 MACHINE CONTROLS
For engine controls and maintenance please refer to the
engine owner's manual included with the machine.
1. Engine Fuel Tank: Use unleaded fuel. Do not mix with
oil.
2. Trailer Hitch: Always use 2 inch ball and safety chains.
3. Jack Stand: Always have in UP position and clear from
ground when moving. When in use, place in DOWN
position on a level surface.
4. Engine Drive Belts and Shield: Never remove shields
when in use.
5. Chipper Chute: Feed materials to be chipped through
the chute.
6. Rotor Access Cover: Used to remove chipper blades
and check nuts for proper torque.
7. Engine Battery: (see section 2.7)
8. Foot Clutch Pedal: Used to disengage rotor assembly
drive belt.
9. Adjustable Chipping Anvil: Check nuts for 75 Ft-lb.
torque every 8 hours.
Figure 3.1 - Chipper Control Locations
Page 116" & 8" Bear Cat Chipper Operator’s Manual
Page 14
4
Section
Operation
4.1 STARTING THE MACHINE
CAUTION
Move machine to a clear area and firm ground outdoors
before starting. Do not operate in the vicinity of
bystanders. Make sure cutting chamber is empty before
starting.
CAUTION
Wear safety glasses at all times when operating the
machine. Do not wear loose fitting clothing. The operator
should always wear protective boots, gloves, pants, and
shirt. Use common sense and practice safety to protect
yourself from branches, sharp objects, and other harmful
objects.
WARNING
Handle fuel (gasoline) with care. It is highly flammable.
Always use an approved container and fill tank outdoors.
Never add fuel to a running or hot engine.
6. If the engine stalls when engaging the foot clutch pedal,
either use more choke or increase engine RPM.
7. When clutch is engaged, the foot clutch pedal may vibrate or shake until the engine and rotor have increased
to full running RPM.
4.2 STOPPING THE MACHINE
CAUTION
Obtain and wear safety glasses at all times when
operating the machine. Avoid wearing loose fitting clothing.
Wear protective boots, gloves, pants, and shirt. Use
common sense and practice safety to protect yourself
from branches, sharp objects, and other harmful objects.
1. Move throttle to SLOW position.
3. Refer to engine owners manual for stopping procedures.
4. Allow machine to come to a complete stop.
NOTE
Some oil usage is normal. Check level with each use.
1. Before starting, fill engine with oil to the correct level.
(see engine manual for operation and maintenance instructions).
2. Fill fuel tank with unleaded regular gasoline. DO NOT
MIX OIL WITH GASOLINE.
3. Depress foot clutch pedal to disengage drive belts and
enable engine to start.
4. Start the engine. (Refer to engine owners manual for
engine staring).
5. Once engine is running and no choke is needed, slowly
let foot clutch pedal up. This will engage the drive belt
and the rotor will turn.
Page 12
6" & 8" Bear Cat Chipper Operator’s Manual
NOTE
The rotor will continue to turn for some time after the
engine has been shut off. You can tell that the rotor has
stopped when no noise or machine vibration is present.
Inserting a branch into the chipper chute to contact the
blades will slow the rotor and shorten stopping time.
Page 15
OPERATION
4.3 ROTATING THE CHIPPER BASE
Figure 4.1 - Chipper Base Rotation
1. Disengage the Chipper Lift Arm from the Chipper Base
and release it by pressing down (see Figure 4.1).
2. Rotate the Chipper Base to desired position.
3. Once the Chipper Base has been positioned, lift up the
Chipper Arm and lock it in place.
4.4 CHIPPING
The Bear Cat chipper is designed to chip a variety of
materials into a more readily decomposable condition. The
following guidelines can be used to help you get started.
WARNING
Keep face and body away from the feed opening. Do not
overreach. Keep proper balance and footing at all times.
1. Run unit at full operating speed before starting to chip
material.
2. Select limbs that are up to 4-1/2" inches in diameter.
Trim side branches that cannot be bent enough to feed
into the chipper chute. Hold small diameter branches
together in a bundle and feed in simultaneously.
3. Feed brush from the side of the chipper chute, rather
than from the front. Then step aside to avoid being hit
by the brush moving into the chipper.
4. Do not lean over the chipper chute to push objects into
the cutting device. Use a push stick or brush paddle.
5. Never use shovels or forks to push brush. They can be
chipped, are expensive to replace, and can cause extensive damage. In addition, metal pieces can fly out
and cause serious injury.
6. Never push brush into the chipper chute with your feet.
WARNING
The chipper base must always be locked in place. Failure
to do so may result in machine vibration, serious bodily
injury or death.
7. Place limb, butt end first, into the chipper chute until it
contacts the hydraulic feed roller and is drawn into the
chipper blades. The actual feed rate of the limb into
the chipper will depend on the type of material fed and
sharpness of the cutting blades.
8. If the engine slows to where it may stall, stop feeding
the material and allow the engine to recover.
9. If the chipper jams, remove the branch and rotate it
before reinserting it into the chute.
10. Alternately insert and retract the limb or insert continuously at a rate that will not kill the engine. Rotating the
branch as it is being fed will improve cutting action.
11. Chipping dead, dry material will create heat and dull
the chipping blades quickly.
12. Alternate greener material with dry material to lubricate the chipping blades for longer life and better performance.
13. When the chipping blades become dull, they will require sharpening (see Section 5).
Page 136" & 8" Bear Cat Chipper Operator’s Manual
Page 16
OPERATION
4.5 HYDRAULIC FEED OPERATION (72620 & 74824)
1. Start the chipper engine. Bring the chipper up to operating speed (see section 4.1).
2. Engage the hydraulic feed by moving the control arm as
shown in Figure 4.2.
3. If the chipper jams, reverse the feed by moving the control arm in the reverse direction. Remove the branch
and rotate it before reinserting it into the chute again.
WARNING
Please read and follow all safety instructions in this
manual. Failure to operate the chipper in accordance
with the safety instructions MAY RESULT IN PERSONAL INJURY!
Figure 4.2 - Control Arm Operation
4.6 HYDRAULIC FEED COMPONENT LOCATIONS (72620 & 74824)
Roller Assembly
Reservoir
Hydrostatic
Pump
Figure 4.3 - Hydraulic Feed Component Locations
Hydraulic
Motor
Chipper
Chute
Crossover
Relief
Valve
Page 14
6" & 8" Bear Cat Chipper Operator’s Manual
Page 17
5
Section
WARNING
Service & Maintenance
5.2 SHARPENING CHIPPER BLADES
Before inspecting or servicing any part of the machine,
shut off the power source, disconnect the spark plug wire
from the spark plug and make sure all moving parts have
come to a complete stop. The chipping blades are sharp!
Use care when working on machine to avoid injury.
WARNING
The rotor (disk) assembly has a lock mechanism. When
working on the rotor assembly, use the lock mechanism
at all times.
5.1 INSTALLING THE ROTOR (DISK)
LOCK
When working on the rotor (disk) assembly, use the lock
mechanism at all times (see Figure 5.1). Follow the steps
below to install the rotor lock:
1. Remove the plastic rotor shaft cover under the chipper
chute. There is a hole in the rotor jack shaft and a matching hole in the bracket mounted to the rotor bearing
frontside.
NOTE
The chipper blades consist of two edges (see Figure 5.2).
When the first edge dulls, flip the blade and torque to 75
Ft-lb to use the second sharp edge. Repeat this procedure
for each blade. After both edges are dull, sharpen the
chipper blades.
SHARPENED
SURFACE
.38
45°
MOUNTING SURFACE
Figure 5.2 - Chipper Blade Surfaces
When the chipper blades dull, chipping becomes difficult. It
is recommended that the chipper blades are sharpened every
5-15 hours of chipper operation.
MOUNTING SURFACE
DO NOT GRIND
DO NOT GRIND
SHARPENED
SURFACE
2. Install a punch or screwdriver into the rotor shaft and
bracket to lock the rotor in place.
ROTOR (DISK) ASSEMBLY
MATCHING HOLE IN BRACKET
ROTOR SHAFT CAP
ROTOR LOCK HOLE.
Figure 5.1 - Rotor (Disk) Lock
Use the following procedure to remove the chipping blades
for sharpening:
1. Remove the two 3/8 inch retaining bolts holding the access cover to the main frame assembly.
2. Tilt access cover over to allow access to rotor. Rotate
the rotor so that the bolts holding the chipper blades
are most accessible.
3. Install the rotor (disk) lock (see Section 5.1). The disk
is now restrained for removing the blades. To access
the remaining blades, remove the punch or screwdriver
and reposition disk. Return the punch or screwdriver to
the rotor lock hole.
4. Remove the two hex head bolts holding the blade to the
rotor.
Page 156" & 8" Bear Cat Chipper Operator’s Manual
Page 18
SERVICE & MAINTENANCE
5. When sharpening the blades be sure to maintain the
original 45 degree angle. Be careful when grinding so
that the blade material does not get too hot and change
color. This will remove the blade's special heat treated
properties. Use short grinding times and cool with water. Try to remove an equal amount off each blade to
maintain balance.
6. Reinstall blade and torque to 75 Ft-lb. Repeat this procedure for each blade.
5.3 REPLACING CHIPPER BLADES
If the chipper blade does not extend beyond the edge of the
rotor chipping slot, follow the procedure below to replace
the chipper blade.
1. Remove the two 3/8 inch retaining bolts holding the access cover to the mainframe assembly.
2. Tilt access cover over to allow access to rotor. Rotate
the rotor so that the bolts holding the chipper blades
are most accessible.
If chipping anvil edge is damaged or worn unevenly, remove
the three bolts holding the anvil and use one of the other
three edges. Adjust for correct measurement.
ROTOR
(DISK)
1/16" - 1/8"
Figure 5.3 - Chipper Blade/Anvil Clearance
CHIPPER
BLADE
ANVIL
ANVIL
SPACER
3. Lock rotor assembly (see Figure 5.1).
4. Remove the two hex head bolts holding the blade to the
rotor.
5. Remove old blade, install new blade and torque to 75
Ft-lb. Repeat this procedure for each blade.
5.4 SETTING CHIPPER BLADE
CLEARANCE
The chipping blades should clear the chipper block located
directly under the chipper chute by 1/16 inch. To adjust the
blade clearance, proceed as follows:
1. Lift rotor access cover and expose rotor. Loosen the
three 1/2 inch bolts that hold the chipper anvil to the
frame (see Figure 5.3).
2. Measure the amount of clearance between chipping
blades and chipping anvil from inside of housing. Adjust
inward or outward to desired measurement.
3. Check clearance on all the blades.
4. Tighten bolts on chipping anvil to 75 Ft-lb and resume
operation.
5.5 REPLACING DRIVE BELTS
Check the condition of the drive belt annually or after every
30 hours of operation, whichever comes first. If the belt is
cracked, frayed, worn, or stretched, replace it. Only replace
belt with original banded type belt. Do not use single type
belts. Follow the procedure below to replace the drive belt.
1. Remove large belt guard (three 5/16" bolts).
2. Loosen bolts on hydraulic pump and remove the hydraulic pump belt, if equipped.
3. To remove old drive belt, step down on foot clutch pedal
to take tension off belt. Remove old belt from pulleys.
4. Install new drive belt on pulleys. Check alignment of
pulleys and adjust if needed. Release foot clutch pedal.
5. Adjust the drive belt tension until the belt deflection at
the center of the belt is 7/16" when a 20 lb. load is
placed against the belt (see Section 5.5)
6. Replace hydraulic pump belt, if equipped. Readjust hydraulic pump belt tension by sliding the hydraulic pump
in the mounting slots. Tighten bolts.
7. Replace belt guard.
Page 16
8. Depress foot clutch pedal, start engine, release foot
clutch pedal to engage belt, and test unit. Readjust
pulleys and belt tension if needed.
6" & 8" Bear Cat Chipper Operator’s Manual
Page 19
SERVICE & MAINTENANCE
5.6 ADJUSTING DRIVE BELTS
To adjust the drive belt tension, proceed as follows:
1. Depress foot clutch pedal. Shut engine off and disconnect battery cables.
2. Remove large belt guard (three 5/16 inch bolts).
3. Adjust the eyebolt that anchors the idler spring to adjust belt tension. Tighten the eyebolt until the belt deflection at the center of the belt is 7/16" when a 20 lb.
load is placed against the belt (see Figure 5.4).
4. Replace belt guard.
5. Start engine, release foot clutch pedal to engage belt,
and test unit. Readjust pulleys and belt tension if needed.
7/16" Deflection
3. Lift up rotor access cover.
4. Clean the debris out the chipper rotor. Turn the rotor by
hand to be sure it is free to rotate. Be careful to avoid
the chipper blades when cleaning out the debris.
5. Close rotor access cover and replace bolts.
6. Depress foot clutch pedal, and start the engine. Release the foot clutch pedal when engine is running to
engage drive belt. Resume operation.
5.8 REPAIRING OR REPLACING RO-
TOR BEARINGS
WARNING
The rotor assembly has a lock mechanism (see Figure
5.1). When working on the rotor assembly, use the lock
mechanism at all times. There is a hole in the rotor jack
shaft and a matching hole in the bracket mounted to the
rotor bearing front side. Install a punch through the rotor
shaft and bracket to lock the rotor in place.
Figure 5.4 - Drive Belt Tension
5.7 CLEARING A PLUGGED ROTOR
WARNING
If the machine becomes plugged, depress the foot clutch
pedal, shut off the engine, disconnect the spark plug wire
and allow the machine to come to a complete stop before
clearing debris. Do not operate the machine without proper
guards and shields in place.
Feeding too large or too much chipable material at once
may plug the chipper. To clear a plugged rotor, proceed as
follows:
1. Depress foot clutch pedal and turn off engine key switch.
Release foot clutch pedal when engine is stopped.
2. Remove the two 3/8" retaining bolts holding the access
cover to the main frame assembly.
Refer to Figure 5.5 while repairing or replacing rotor bearings.
1. Remove the two 3/8 inch retaining bolts holding the access cover to the main frame assembly. Tilt access
cover over to allow access to rotor.
2. Remove large belt guard (three 5/16 inch bolts).
3. On hydraulic feed units, loosen bolts that anchor the
hydraulic pump to mount and remove hydraulic belts.
4. Step down on foot clutch pedal to release tension and
remove drive belt from pulleys.
5. Using the push bolts from the bushing, remove the bushing and pulley from the rotor shaft.
6. If a rotor bearing needs repair, it is best to remove the
complete rotor assembly from the chipper frame.
7. Using an overhead hoist or lifting device, remove the
four 1/2 inch bolts on each rotor bearing and lift the rotor
assembly completely out of the frame. The complete
rotor assembly weighs 275 lbs.
8. Once the rotor assembly is out of the frame, both bearings on the rotor assembly shaft can be removed by a
puller and replaced.
9. Use the overhead hoist or a lifting device to return the
complete rotor assembly to the chipper frame.
Page 176" & 8" Bear Cat Chipper Operator’s Manual
Page 20
SERVICE & MAINTENANCE
10. Install the four 1/2 inch bolts on each bearing to secure
them to the frame. Tighten bolts to 75 Ft-lb.
11. Slide rotor assembly forward to remove any existing
play in the assembly. Relocate the bushing and rotor
sheave to remove the play in the rotor assembly.
WARNING
It is extremely important to slide the rotor assembly forward to remove any existing play in the rotor assembly.
Failure to do so could result in the chipper blades striking the chipping anvil. This could result in serious injury
or death.
12. Replace drive belt on pulleys and depress the foot clutch
pedal. Check alignment of pulleys and adjust engine
sheave if needed. Release foot clutch pedal.
13. Check belt tension before start-up (see Section 5.5).
14. On hydraulic feed units, replace the hydraulic belt and
tighten the bolts that anchor the hydraulic pump to
mount.
5.9 GREASEABLE BEARINGS AND
PIVOTS
NOTE
Polyuria and lithium based greases are not compatible.
Mixing the two grease types may lead to premature failure
of the chipper.
NOTE
The use of pneumatic grease equipment is not
recommended unless low pressure is assured.
Mounted bearings are pre-lubricated at our factory and are
ready for operation.
RELUBRICATION:
Relubrication of bearings is determined by operating
conditions and environment. Relubricate standard bearings
with a LITHIUM based grease. Greasing intervals and
quantities are shown on the next page using the following
symbol:
15. Close rotor access cover and replace bolts.
16. Replace belt guard and resume operation.
17. Depress foot clutch pedal, start engine, release foot
clutch pedal to engage belt, and test unit. Readjust
pulleys and belt tension if needed.
Bushing &
Pulley
Hydraulic Belt
Drive Belt
Rotor Bearings
Figure 5.5- Rotor Bearings
Frequency (i.e. 50 hours).
Quantity
Recommended
quantity of grease.
GREASING INTERVALS:
Bearings in extreme environments will require more frequent
greasing intervals.
GREASE FILL AMOUNTS:
It is preferred that experience dictate fill amounts due to
wide variances in applications, greasing equipment and
operating conditions. The quantities shown on the next page
are recommended amounts. In most cases, it is best to
relube in small amounts, under low pressure, until a thin
bead of fresh grease is visible at the seal lip area.
Care should be taken when greasing bearings to avoid
overfilling. Overfilling can lead to excessive heat and/or
unseating of the seals. Grease should be introduced in small
amounts and under light pressure. Whenever possible, the
bearing should be rotated slowly while grease is added to
ensure equal distribution throughout the raceways.
The chipper models described in this manual have eight (8)
greaseable bearings and pivots that require greasing. Refer
to the Figures 5.6 through 5.11 on the next page for greasing
intervals and quantities.
Page 18
6" & 8" Bear Cat Chipper Operator’s Manual
Page 21
5.9 GREASEABLE BEARINGS AND PIVOTS (CON'T)
.10 to .18 oz
(3 to 5 grams)
Figure 5.7 - Discharge Tube
SERVICE & MAINTENANCE
.18 oz
(5 grams)
.10 OZ
(3 GRAMS)
Figure 5.8 - Feed roller
Figure 5.6 - Rotor Bearings
Page 196" & 8" Bear Cat Chipper Operator’s Manual
Page 22
SERVICE & MAINTENANCE
5.9 GREASEABLE BEARINGS AND PIVOTS (CON'T)
.10 OZ
(3 GRAMS)
Figure 5.9 - Feed roller
6
5
Page 20
.10 OZ
(3 GRAMS)
Figure 5.10 - Turntable Bearings
Figure 5.11 - Foot Clutch Pedal Pivot Point
6" & 8" Bear Cat Chipper Operator’s Manual
.10
(3 grams)
Page 23
SERVICE & MAINTENANCE
5.10 OTHER SERVICE AND MAINTENANCE TIPS
1. Service engine according to the engine owner's manual.
Change engine oil and filter as recommended in manual.
2. Check all bolts and other fasteners for correct torque
after every 8 hours of operation (see section 7.2 for appropriate torque values).
5.11 TRAILER SERVICE TIPS
1. Check wheel bolt torque every 8 hours of towing.
2. Check air pressure in tires every 8 hours of towing. In-
flate to pressure marked on sidewall of tire.
3. Check and repack wheel bearings with grease every 12
months.
4. When towing, use a 2" (inch) trailer ball, and always
connect the safety chains. Make sure trailer hitch bolts
are tight and secure.
5.12 HYDRAULIC FLUID (MODELS
72620 & 74824)
Handle pressurized hydraulic fluid carefully. Escaping
pressurized hydraulic fluid may penetrate your skin causing
serious injury. This fluid may also be hot enough to burn.
Serious infection or reactions can develop if immediate
proper medical treatment is not administered.
5.13 HYDRAULIC PUMP START UP
PROCEDURE (72620 & 74824)
Figure 5.10 - Hydraulic Pump Components
NOTE
Hydrualic pressure controlled by the crossover relief valve
is factory set at 1750 PSI.
Follow this start-up procedure when starting a new installation
or when restarting an installation in which the hydraulic pump
has been removed from the system.
1. Before starting the hydraulic pump, make sure all system components (reservoir, fittings, etc.) are clean (see
Figure 5.10).
2. Add recommended hydraulic fluid to the reservoir. The
hydraulic fluid should be filtered before it enters the reservoir.
3. The inlet line leading from the reservoir to the charge
pump must be filled before start-up. Loosen the fitting
on this inlet line until oil bleeds out.
Premium hydraulic fluids containing high quality rust,
oxidation, and foam inhibitors are required. These include
premium turbine oils, API CD engine oils per SAE J183,
M2C33F or G automatic transmission fluids meeting Allison
C-3 or Caterpillar TO-2, and certain specialty agricultural
tractor fluids
WARNING
Do not start engine unless pump is in neutral position
on the cable.
4. Start the engine and run at the lowest possible RPM.
5. As air is purged from the unit, the oil level in the reservoir will drop and bubbles may appear in the fluid. Refill
the reservoir as necessary.
6. Run the unit and move the control arm in both directions for several minutes until any remaining air is purged
from the unit. Refill the reservoir as necessary.
7. Check to ensure that the feed roller stops when the
control arm is in the neutral position. Adjust the cable
clevis or anchor if the feed roller doesn't stop.
8. Shut down the engine, check for and correct any fluid
leaks, and check the reservoir level. Add fluid if necessary. The hydrostatic pump is now ready for operation.
Page 216" & 8" Bear Cat Chipper Operator’s Manual
Page 24
SERVICE & MAINTENANCE
5.14 HYDRAULIC FEED MAINTENANCE (72620 & 74824)
CAUTION
Before servicing or repairing any of the hydraulic feed
components (pump, motor, and/or relief valve), contact
your dealer or factory service department. Warranty on
these items may be void without prior authorization.
CAUTION
Hydraulic systems contain fluid under high pressure.
Never check for leaks with hands. Relieve pressure before disconnecting any hydraulic lines.
The hydraulic pump normally does not require regular fluid
changes. The system filter should be changed after 250
hours of operation or annual intervals. The fluid and filter
should be changed and system cleaned if the fluid becomes
contaminated with foreign matter (water, dirt, grease, etc.)
or if the fluid has been subjected to temperature levels greater
than the maximum recommended.
There is a greaseable bearing on each side of the main jack
shaft on the main hydraulic feed housing. Grease periodically
(see section 5.8).
Page 22
6" & 8" Bear Cat Chipper Operator’s Manual
Page 25
6
Troubleshooting
Section
6.1 GENERAL TROUBLESHOOTING
Problem Probable Cause Suggested Remedies
Rotor does not turn
Hard to feed chipper or
excessive power
needed to chip
Chipper requires
excessive power or
stalls
Drive belts squealing or
smoking
Obstructed discharge
Plugged rotor Clear rotor
Obstructed discharge
Dull chipper blades Sharpen blades
Improper blade clearance Adjust clearance
Obstructed discharge
Plugged rotor
Green material will not discharge
Plugged rotor Clear rotor
Loose or worn belts
Drivehead vibration
Use branch or similar object to
clear discharge
Use branch or similar object to
clear discharge
Use branch or similar object to
clear discharge
Clear rotor, feed material into
shredder more evenly
Alternately feed dry material, or
allow material to dry
Adjust belt tension or replace
belts if needed
Check drive belts and pulleys
for bad or worn spots
Vibration while running
Rotor out of balance
Engine dies or runs poorly Engine problems Contact local Honda dealer
Inspect rotor for broken or
missing chipper blades and
paddles. Repair if needed.
Check rotor to see if it wobbles.
Check to see if the rotor is
assembled correctly
Page 236" & 8" Bear Cat Chipper Operator’s Manual
Page 26
Drain fluid from reservoir and unit, replace
TROUBLESHOOTING
6.2 HYDROSTATIC PUMP TROUBLESHOOTING (72620 & 74824)
Symptom Probable Cause Suggested Remedy
Will not attain normal feed
rate.
Will not feed when control
arm is moved.
Feed rate is sluggish under
load.
Engine not operating at correct
speed.
Control linkage damaged or
binding.
Bypass valve stuck partially
open. (Problem in one direction
only).
Control linkage damaged or not
connected.
Drive between engine and pump
damaged.
Pump low on fluid. Refill reservoir. Purge air from system.
Loose belt between engine and
pump.
Pump low on fluid. Refill reservoir. Purge air from System.
Large amount of water in
hydraulic fluid (evaporates when
hot, resulting in low fluid level).
Repair engine governor.
Repair control linkage.
Repair bypass valve. Remove foreign
material from valve.
Repair or reconnect control linkage.
Repair drive (replace broken belt, repair
sheared key, repair splined coupling, etc.
Adjust tension on drive belt (replace if
necessary).
filter element, and refill with new fluid.
Hydraulic feed will not pull
in logs over 4" in diameter,
or continuously stalls or
stops.
Hydraulic system overloading
and causing system to go over
relief.
Page 24
Check relief pressure in system with a
pressure gauge rated to 2500 psi.
(System set by factory at 1750 psi.)
6" & 8" Bear Cat Chipper Operator’s Manual
Page 27
7
Specifications
Section
7.1 SPECIFICATIONS
Specifications Model 71620 Model 72620 Model 72824
Overall size (LxWxH) 76x80x90" 93x80x90" 93x80x90"
Max. Chipper Capacity 6" 6" 8"
Chipper Blade Qty.
Rotor Speed 1500 RPM 1500 RPM 1500 RPM
Rotor Size
Rotor Weight 275 lbs. 275 lbs. 275 lbs.
Rotor Shaft Diameter 1.75 1.75 1.75"
Discharge Size 8" 8" 8"
Drive Type Belt Belt Belt
Belt Size 3B83 3D83 3B83
Weight 1445 1865 1870
Wheel Base 66" 66" 66"
Tire Size 5.30 - 12 5.30 - 12 5.30 - 12
Fuel Tank Cap. (Gal.) 6 6 6
Engine Honda 20 HP Honda 20 HP Honda 24 HP
4 Reversible
Tool Steel
30" Dia. x
1.25"
4 Reversible
Tool Steel
30" Dia. x
1.25"
4 Reversible
Tool Steel
30" Dia. x
1.25"
Specifications are subject to change due to design
modifications.
Page 256" & 8" Bear Cat Chipper Operator’s Manual
Page 28
M432.2 - - - - - -M554 - - - - - -M664.5118.517121914.5M815112820403047
35
M102921554080609570
M1250379570
140
105
165
120
M148060
150
110
225
165
260
190
M16
12592240
175
350
255
400
300
M18
175
125
330
250
475
350
560
410
M20
240
180
475
350
675
500
800
580
M22
330
250
650
475
925
675
1075
800
M24
425
310
825
600
1150
850
1350
1000
M27
625
450
1200
875
1700
1250
2000
1500
Diameter
5/16"151123173425
3/8"272041306145
7/16"413068509570
1/2"6850
10275149
110
9/16"9770
149
110
203
150
5/8"
12290203
150
312
230
3/4"
217
160
353
260
515
380
7/8"
230
170
542
400
814
6001"298
220
786
580
1220
900
1-1/8"
407
300
1085
800
1736
1280
1-1/4"
570
420
2631
1940
2468
1820
Diameter
SPECIFICATIONS
7.2 BOLT TORQUE
CHECKING BOLT TORQUE:
The table shown below is for reference purposes only and its use by anyone is entirely voluntary, unless otherwise noted.
Reliance on its contents for any purpose is at the sole risk of that person. BearCat Co. is not responsible for any loss claim
or damage arising therefrom. In developing these tables, BearCat has made a determined effort to present the contents
accurately.
SAE - 8SAE - 2ASAE - 5
ENGLISH TORQUE SPECIFICATION
Bolt
"A"
1/4" 7.5 5.5 11 8 16 12
SAE 2 SAE 5 SAE 8
N.m Ft-lb N.m Ft-lb N.m Ft-lb
A
Bolt Torque* (UNC)
METRIC TORQUE SPECIFICATION
Bolt
Bolt Torque*
Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless otherwise specified. Therefore, do not grease or
oil bolts or capscrews unless otherwise specified in this manual. When using locking elements, increase torque values by 5%.
* Torque value for bolts and capscrews are identified by their head markings.
Page 26
"A"
4.8 8.8 10.9
12.9
N.m Ft-lb N.m Ft-lb N.m Ft-lb N.m Ft-lb
M3 0.5 0.4 - - - - - -
6" & 8" Bear Cat Chipper Operator’s Manual
Page 29
Manual Improvement Program
If you have a suggestion on how to improve this manual, send it to us. Participants whose ideas are
implemented will receive a free pair of Crary genuine leather gloves.
Send your suggestions to:Crary Company
C/O Technical Writer
237 NW 12th St. Box 849
West Fargo, ND 78078
Suggestions:
Address:
Address:
Phone Number:
Email (if applicable):
Product purchased:
Manual part number:
Page 276" & 8" Bear Cat Chipper Operator’s Manual
Page 30
Page 31
Page 32
Crary Company
A Division of TerraMarc Industries
237 12th St. NW • P.O. Box 849
West Fargo, ND 58078-0849
(701)282-5520 • FAX: (701)282-9522
www.bearcatproducts.com
www.terramarc.com
Manufactured in the
United States of America
by Crary Company
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