MADE WITH PRIDE IN THE...
6 inch
chipper
71620
72620
ow n e r ' s m a n ual
Manual P/N 13987-00
R060107
Companion to P/N 13988-00
Before You Begin
DEAR ECHO BEAR CAT CUSTOMER
Thank you for purchasing a ECHO Bear Cat product. The ECHO Bear Cat line is designed, tested, and manufactured
to give years of dependable performance. To keep your machine operating at peak efciency, 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 your machine.
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 authorized ECHO Bear Cat Dealer.
This document is based on information available at the time of its publication. ECHO Bear Cat is continually making
improvements and developing new equipment. In doing so, we reserve the right to make changes or add improvements
to our product without obligation for equipment previously sold.
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 ll 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.
PARTS ORDERING INFORMATION
For service assistance, contact your authorized ECHO
Bear Cat dealer or the factory. For parts, contact your
authorized ECHO Bear Cat dealer. Your dealer will need to
know the serial number or VIN of your machine to provide
the most efcient service. See below for information on
how to identify and record the identication number for
your machine.
If you need engine service or parts:
For engine service or parts, contact your local authorized
engine dealer. An authorized engine dealer can handle
all parts, repairs, and warranty service for the engine.
IDENTIFICATION NUMBER LOCATION
Your machine will have either a serial number or vehicle
identication number (VIN). VINs are located on the left
side of the trailer frame near the hitch. They are 17-digit
numbers of the format: 5VJAA001XXWXXXXX. Serial
numbers are located on the machine body. They are 6digit numbers.
Record your identication number in the space provided
and on the warranty registration card.
REPLACEMENT PARTS
Only genuine ECHO Bear Cat replacement parts should
be used to repair the machine. Replacement parts
manufactured by others could present safety hazards,
even though they may t on this machine. Replacement
parts are available from your ECHO Bear Cat dealer.
Provide the following when ordering parts:
The SERIAL NUMBER OR VIN of your machine.
The PART NUMBER of the part.
The PART DESCRIPTION.
The QUANTITY needed.
SERIAL NUMBER OR VIN
HOW TO C O N TAC T E C H O B E A R C AT
ADDRESS PHONE E-MAIL HOURS
237 NW 12th Street
P.O. Box 849
West Fargo, ND 58078
© 2006, CRARY INDUSTRIES, ALL RIGHTS RESERVED. PRODUCED AND PRINTED IN THE U.S.A.
800-247-7335
701-282-5520
FAX: 701-282-9522
opesales@crary.com
service@crary.com
Monday - Friday,
8 am to 5 pm
Central Time
LIMITED WARRANTY
This warranty applies to all AG and Outdoor Power Equipment manufactured by Crary Industries.
Crary Industries warrants to the original owner each new Crary Industries product to be free from defects
in material and workmanship, under normal use and service. The warranty shall extend 1 year from date of
delivery for income producing (commercial) applications and 2 years from date of delivery for non-income
producing (consumer) use of the product. The product is warranted to the original owner as evidenced by a
completed warranty registration on file at Crary Industries. Replacement parts are warranted for (90) days
from date of installation.
THE WARRANTY REGISTRATION MUST BE COMPLETED AND RETURNED TO CRARY INDUSTRIES
WITHIN 10 DAYS OF DELIVERY OF THE PRODUCT TO THE ORIGINAL OWNER OR THE WARRANTY
WILL BE VOID.
In the event of a failure, return the product, at your cost, along with proof of purchase to the selling Crary
Industries dealer. Crary Industries will, at its option, repair or replace any parts found to be defective in material
or workmanship. Warranty on any repairs will not extend beyond the product warranty. Repair or attempted
repair by anyone other than a Crary Industries dealer as well as subsequent failure or damage that may occur
as a result of that work will not be paid under this warranty. Crary Industries does not warrant replacement
components not manufactured or sold by Crary Industries.
This warranty applies only to parts or components that are defective in material or workmanship.
1.
This warranty does not cover normal wear items including but not limited to bearings, belts, pulleys, filters
2.
and chipper knives.
This warranty does not cover normal maintenance, service or adjustments.
3.
This warranty does not cover depreciation or damage due to misuse, negligence, accident or improper
4.
maintenance.
This warranty does not cover damage due to improper setup, installation or adjustment.
5.
This warranty does not cover damage due to unauthorized modifications of the product.
6.
Engines are warranted by the respective engine manufacturer and are not covered by this warranty.
7.
Crary Industries is not liable for any property damage, personal injury or death resulting from the unauthorized
modification or alteration of a Crary product or from the owner’s failure to assemble, install, maintain or operate
the product in accordance with the provisions of the Owner’s manual.
Crary Industries is not liable for indirect, incidental or consequential damages or injuries including but not
limited to loss of crops, loss of profits, rental of substitute equipment or other commercial loss.
This warranty gives you specific legal rights. You may have other rights that may vary from area to area.
Crary Industries makes no warranties, representations or promises, expressed or implied as to the performance
of its products other than those set forth in this warranty. Neither the dealer nor any other person has any
authority to make any representations, warranties or promises on behalf of Crary Industries or to modify the
terms or limitations of this warranty in any way. Crary Industries, at its discretion, may periodically offer limited,
written enhancements to this warranty.
CRARY INDUSTRIES RESERVES THE RIGHT TO CHANGE THE DESIGN AND/OR SPECIFICATIONS
OF ITS PRODUCTS AT ANY TIME WITHOUT OBLIGATION TO PREVIOUS PURCHASERS OF ITS
PRODUCTS.
6 INCH CHIPPER
1
TABLE OF CONTENTS
DESCRIPTION PAGE DESCRIPTION PAGE
SAFETY ..........................................................3
1.1 SAFETY ALERT SYMBOL ................................... 3
1.2 EMISSION INFORMATION .................................. 3
1.3 BEFORE OPERATING ......................................... 4
1.4 OPERATION SAFETY .......................................... 4
1.5 FEED ROLLER SAFETY ...................................... 5
1.6 BATTERY SAFETY .............................................. 5
1.7 MAINTENANCE/STORAGE SAFETY .................. 5
1.8 TOWING SAFETY ................................................ 6
1.9 SAFETY DECAL LOCATIONS .............................
1.10 SAFETY DECALS .............................................. 8
ASSEMBLY ................................................... 10
2.1 TRAILER WHEELS AND HITCH .......................... 10
2.2 ATTACH CHIPPER CHUTE ................................ 10
2.3 ATTACH DISCHARGE TUBE ............................... 10
2.4 INSTALL THE BATTERY .......................................
2.5 ADD FLUIDS .........................................................
11
11
CONTROLS AND OPERATION .................... 12
3.1 CONTROLS......................................................... 12
3.2 ENGINE ............................................................... 13
3.3 OPERATION ........................................................ 13
HYDRAULIC FEED ....................................... 15
4.1 HYDRAULIC FEED INSTRUCTIONS ................. 15
4.2 CONTROL ARM OPERATION ............................ 15
4.3 HYDRAULIC FEED MAINTENANCE .................. 16
ELECTRONIC FEED SENSOR ....................17
5.1 INSTALLING THE SENSOR ............................... 17
SERVICE AND MAINTENANCE ................... 18
7
6.1 MAINTENANCE SCHEDULE .............................. 18
6.2 SHARPENING CHIPPER BLADES..................... 19
6.3 SETTING BLADE CLEARANCE ......................... 19
6.4 ADJUSTING/REPLACING DRIVE BELT ............. 20
6.5 CLEARING PLUGGED ROTOR .......................... 20
6.6 REPLACING BEARINGS .................................... 21
6.7 GREASEABLE BEARINGS ................................. 21
TROUBLESHOOTING .................................. 22
7.1 GENERAL TROUBLESHOOTING ...................... 22
7.2 HYDROSTATIC PUMP TROUBLESHOOTING ... 23
SPECIFICATIONS .........................................24
8.1 CHIPPER SPECIFICATIONS ............................... 24
8.2 BOLT TORQUE .................................................... 25
2
6 INCH CHIPPER
1
SAFETY
Section
1.1 SAFETY ALERT SYMBOL 1.2 EMISSION INFORMATION
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 ammable agricultural
The Owner/Operator's manual uses this symbol to alert
you of 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.
CAUTION
Indicates a potentially hazardous situation that, if not
avoided, may result in minor or moderate injury.
WARNING
Indicates a potentially hazardous situation that, if not
avoided, could result in death or serious injury.
DANGER
Indicates an imminently hazardous situation that, if not
avoided, will result in death or serious injury.
crops, without an engine spark arrester in continuous effective working order.
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
mufer in continuous effective working order. The spark
arrester must be attached to the engine exhaust system
in such a manner that ames or heat from the system will
not ignite ammable material.
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 lo-
cal re marshal or forest service for specic information
about which regulations apply in your area.
The standard mufer installed on the engine is not
equipped with a spark arrester. One must be added
before using this machine 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.
6 INCH CHIPPER
3
SAFETY
1.3 BEFORE OPERATING
Read and understand this Owner/Operator's manual.
1.
Be completely familiar with the controls and the proper
use of this equipment.
Familiarize yourself with all of the safety and operating
2.
decals on this equipment and on any of its attachments
or accessories.
Keep safety decals clean and
3.
legible. Replace missing or illegible safety decals.
Obtain and wear safety glasses
4.
and use hearing protection at
all times when operating this
machine.
Avoid wearing loose fitted clothing. Never operate this
5.
machine wearing clothing with drawstrings that could
wrap around or get caught in the machine.
Do not operate this machine if you are under the
6.
influence of alcohol, medications, or substances that
can affect your vision, balance or judgement. Do not
operate if tired or ill. You must be in good health to
operate this machine safely.
Do not operate this equipment in the vicinity of bystand-
7.
ers. Keep the area of operation clear of all persons,
particularly small children. It is recommended that
bystanders keep at least 50 feet (15 meters) away
from the area of operation.
Do not allow children to operate this equipment.
8.
Use only in daylight or good artificial light.
9.
Do not run this equipment in an
10.
enclosed area. Engine exhaust contains carbon monoxide gas, a deadly
poison that is odorless, colorless and
tasteless. Do not operate this equipment in or near buildings, windows or
air conditioners.
Always use an approved fuel container. Do not remove
11.
gas cap or add fuel when engine is running. Add fuel
to a cool engine only.
Do not fill fuel tank indoors. Keep open flames, sparks,
12.
smoking materials and other sources
of combustion away from fuel.
Keep all guards , d eflectors, and
13.
shields in good working condition.
Before inspecting or servicing any part of this machine,
14.
shut off the machine, disconnect the spark plugs, remove the ignition key and make sure all moving parts
have come to a complete stop.
Check that all screws, nuts, bolts, and other fasteners
15.
are secured, tightened and in proper working condition
before starting the machine and once every 8 hours
of operation.
Do not transport or move machine while the machine
16.
is operating or running.
1.4 OPERATION SAFETY
Always stand clear of discharge area when operating
1.
this machine. Keep face and body away from feed
and discharge openings.
Keep hands and feet out of feed and
2.
discharge openings while machine is
operating to avoid serious personal
injury. Stop and allow machine to
come to a complete stop before
clearing obstructions.
Set up your work site so you are not endangering traffic
3.
and the public. Take great care to provide adequate
warnings.
Do not climb on machine when operating. Keep proper
4.
balance and footing at all times.
Check cutting chamber to verify it is empty before
5.
starting the machine.
The disk will continue to rotate when belt is disen-
6.
gaged.
Do not insert branches larger than 6 inches in diameter
7.
into chipper or machine damage may occur.
When feeding material into machine, do not allow
8.
metal, rocks, bottles, cans or any other foreign material to be fed into the machine.
Ensure debris does not blow into traffic, parked cars,
9.
or pedestrians.
Keep the machine clear of debris and other accumu-
10.
lations.
Do not allow processed material to build up in the
11.
discharge area. This may prevent proper discharge
and can result in kickback of material through the
feed opening.
Shut off machine immediately if the machine becomes
12.
clogged, the cutting mechanism strikes any foreign
object, or the machine starts vibrating or making an
unusual noise. Shut off the machine, disconnect the
battery, remove the ignition key and make sure all
moving parts have come to a complete stop. After
machine stops:
Inspect for damage.
A.
4
6 INCH CHIPPER
WRONG
WRONG
DANGER / POISON
SHIELD EYES
EXPLOSIVE GASES
CAN CAUSE
BLINDNESS OR
INJURY
NO
• SPARKS
• FLAMES
• SMOKING
SULFURIC
ACID
CAN CAUSE
BLINDNESS OR
SEVERE BURNS
FLUSH EYES
IMMEDIATELY
WITH WATER
GET
MEDICAL
HELP
FAST
KEEP OUT OF THE REACH OF CHILDREN. DO NOT TIP. KEEP VENT CAPS TIGHT AND LEVEL.
Replace or repair any damaged
B.
parts.
Check for and tighten any loose
C.
parts.
Disconnect cables from battery and
13.
remove key before doing any inspection or service.
Check blade bolts for proper torque after every 8 hours
14.
of operation. Check blades and rotate or resharpen
daily or as required to keep blades sharp. Failure to do
so may cause poor performance, damage or personal
injury and will void the machine warranty.
1.5 FEED ROLLER SAFETY
The feed roller can cause serious injury or death. Keep
1.
hands, feet and clothing away from the feed roller and
chipper disk blades.
Never climb onto the feed chute
2.
when the unit is operating or
running.
Do not overreach. Keep prop-
3.
er balance and footing at all
times.
Never allow passengers to ride
4.
on the feed chute.
When feeding material into the
5.
feed roller:
Wear eye, face and hearing
A.
protection.
Release material and stand to side of feed
B.
chute.
When inspecting or servicing the feed roller, secure
6.
the feed roller in the raised position using the snap pin
located on the roller slide.
1.6 BATTERY SAFETY
Improper use and care of the battery on electric start
1.
models can result in serious personal injury or property damage. Always observe the following safety
precautions.
Poison/Danger - Causes Severe Burns. The battery
2.
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.
The battery produces explosive gases. Keep sparks,
3.
flame or cigarettes away. Ventilate area when charging battery. Always wear safety goggles when working
near battery.
The battery contains toxic materials. Do not damage
4.
battery case. If case is broken or damaged, avoid
contact with battery contents.
Neutralize acid spills with a baking soda and water
5.
solution. Properly dispose of a damaged or worn-out
battery. Check with local authorities for proper disposal
methods.
Do not short circuit battery. Severe fumes and fire
6.
can result.
Before working with electrical wires or components,
7.
disconnect battery ground (negative) cable first. Disconnect positive cable second. Reverse this order
when reconnecting battery cables.
1.7 MAINTENANCE/STORAGE SAFETY
Before inspecting, servicing, storing, or changing an
1.
accessory, shut off the machine, disconnect the battery, remove the ignition key and make sure all moving
parts have come to a complete stop.
Replace any missing or unreadable safety decals. Re-
2.
fer to the parts manual for part numbers when ordering
safety decals from an area Bear Cat dealer.
Allow machine to cool before storing in an enclosure.
3.
Store the machine out of reach of children and where
4.
fuel vapors will not reach an open flame or spark.
Never store this machine with fuel in the fuel tank
5.
inside a building where fumes may be ignited by an
open flame or spark. Ignition sources can be hot water
and space heaters, furnaces, clothes dryers, stoves,
electric motors, etc.
6 INCH CHIPPER
SAFETY
ANTIDOTE-Eye Contact: Flush with water for 15
minutes. Get prompt medical attention.
5
SAFETY
1.8 TOWING SAFETY
Rotate the discharge tube to face the opposite direction
1.
of the towing vehicle before towing.
Connect hitch safety chains.
2.
Do not attempt to tow the trailer if the vehicle is not
3.
equipped with a 2” ball.
Do not exceed maximum towing speed indicated on tire
4.
sidewall. Inflate tires to manufacturers specifications
as stated on the tire sidewall.
Optimum towing performance can be achieved by
5.
maintaining a horizontal trailer hitch.
Check wheel lug bolts periodically to ensure they are
6.
tight and secure.
Make sure the jack stand and the rear stabilizer on
7.
trailer are in the UP position during towing.
Never allow passengers to ride on the chipper.
8.
If applicable, shut off fuel supply when towing.
9.
6
6 INCH CHIPPER
SAFETY
1.9 SAFETY DECAL LOCATIONS
See Section 1.10 for decal descriptions. Familiarize yourself with all of the safety and operating decals on the machine
and the associated hazards. See the engine owners manual for engine safety instructions and decals. Make certain
that all safety and operational decals on this machine are kept clean and in good condition. Refer to the parts catalog
if you need a replacement decal. Replacement decals must be applied to their original locations.
Figure 1.1, Chipper chute decals
Figure 1.2, Rotor cover decals
Figure 1.3, Chipper decals
6 INCH CHIPPER
7
SAFETY
1.10 SAFETY DECALS
Safety and instruction decals are located on the chipper frame and engine. Replace any decal that is damaged or unreadable.
PN 12010
1
2
3
PN 14049-00
PN 16551
4
PN 17846
8
6 INCH CHIPPER
1.10 SAFETY DECALS (CONT.)
PN 13711-00
5
6
SAFETY
PN 17423
7
9
PN 16085
PN 16558
8
10
PN 16557
PN 17837
6 INCH CHIPPER
9
2
Section
ASSEMBLY
NOTE
See the torque chart in the back of the manual for
proper tightening of bolts.
2.1 TRAILER WHEELS AND HITCH
Remove the chipper from its shipping crate. Place the
1.
unit on a level surface before assembling.
Support the frame on wood blocks or other support
2.
device.
Mount the two tires and rims to the axle assembly with
3.
the supplied lug nuts.
Mount the trailer hitch assembly to the frame using
4.
three 3/8" x 3-1/2" bolts and locknuts.
2.2 ATTACH CHIPPER CHUTE
WARNING
Do not operate this unit without the chipper chute
correctly installed. Rotating cutting blades can cause
serious personal injury.
2.3 ATTACH DISCHARGE TUBE
Attach the blower discharge tube to the chipper frame
1.
mounting flange shown in Figure 2.3.1. Half of the
mounting clamp is already attached to the blower tube.
Slide the tube onto the flange and tighten the bolts to
secure it.
Install the second half of the spacer and clamp to the
2.
tube and flange. Rotate the tube 360 degrees and lock
it in place with the lock pin to make sure it is mounted
correctly.
Figure 2.3.1, Mount the discharge to the mounting ange
Remove chipper from shipping crate. Place unit on a
1.
level surface before attempting to assemble.
Mount the chipper chute to the frame mounting bracket
2.
using eight 3/8" x 1" bolts and locknuts (see Figure 2.2).
Use three bolts on each side and two on the bottom.
Tighten bolts to 35 ft-lbs.
Figure 2.2, Attaching the chipper chute
Figure 2.3.2, Attaching the discharge tube
10
6 INCH CHIPPER
IMPORTANT
If any bolts or nuts are dropped in the machine, be
sure to remove them before starting the machine.
2.4 INSTALL THE BATTERY
Check battery condition. Charge if needed.
1.
Install 12 volt battery. Connect the positive cable to
2.
the positive battery terminal and the negative cable to
the negative one.
2.5 ADD FLUIDS
2.5.1 MOTOR OIL
The machine was shipped with oil in the engine, as it
1.
was tested at the factory.
To determine which type of oil to use, refer to the engine
2.
owners manual included with the chipper.
Remove the oil dipstick and check oil level.
3.
If necessary, fill with approved motor oil until the dip-
4.
stick shows a correct oil level.
ASSEMBLY
2.5.2 GASOLINE
With the engine stopped, make sure all moving parts
1.
are stopped, disconnect spark plug from wire, and remove the key from the key switch. Only add gasoline
to a cool engine.
Clean area around fuel fill cap and remove the cap.
2.
Use a clean funnel to fill the fuel tank to 1/2" below bot-
3.
tom of filler neck to provide space for fuel expansion.
Install fuel fill cap securely and wipe up any spilled
gasoline.
2.5.3 HYDRAULIC FLUID
Hydraulic uid drives the feed roller. The hydraulic pump
requires premium hydraulic uids containing high qual-
ity rust, oxidation, and foam inhibitors. These include
premium turbine oils, API CD engine oils per SAE J183,
M2C33F or G automatic transmission uids meeting Allison C-3 or Caterpillar TO-2, and certain specialty agricul-
tural tractor uids. For more information on the hydraulic
feed kit, see Section 4.
6 INCH CHIPPER
11
3
CONTROLS AND OPERATION
Section
3.1 CONTROLS
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. Engine: See engine controls on next page.
7. Rotor access cover: Remove to expose chipper
blades.
8. Engine battery: (Not included)
9. Rotor shaft bearing cover: Covers rotor shaft and
front bearing.
10. Adjustable chipping anvil: Changes the size of the
chips.
11. Belt engagement pedal: When the pedal is depressed, the drive belt is disengaged. When the pedal
is released, the drive belt is engaged.
12. Turntable foot pedal: Used to pivot machine 360
degrees on the trailer.
12
Figure 3.1, 6 inch chipper controls
6 INCH CHIPPER
CONTROLS AND OPERATION
3.2 ENGINE
NOTE
For more detailed engine information, see the engine
owners manual provided with the chipper.
Engine throttle: Changes engine speed. Turn knob
1.
clockwise for full throttle operation. Turn knob counterclockwise for idle on warm up. Turn knob fully counterclockwise to shut engine off. Refer to engine manual
for further engine operating instructions.
Engine choke: Use when starting a cold engine. Pull
2.
to ON position when starting. Push lever to OFF position when engine is running. Refer to engine manual
for further engine operating instruction.
Key switch: Located on engine case. Release switch
3.
as soon as engine is running. Do not crank starter for
more than ten seconds or damage could result.
WARNING
Handle 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.
Place the throttle control midway between slow and fast
3.
positions. Place the choke control to the ON position.
If the engine fails to start, move the lever to RUN or
partial choke.
NOTE
When restarting a warm engine after a recent shut
down, it may not be necessary to use a full choke.
Disengage drive belts, which will enable engine to
4.
start. SEE OPERATION/START-UP DECAL BY BELT
ENGAGEMENT PEDAL ON MACHINE BEFORE
STARTING.
Activate the starter switch. Release the switch as soon
5.
as the engine starts. Do not crank for more than 10
seconds.
CAUTION
Figure 3.2, Engine controls
3.3 OPERATION
CAUTION
Move machine to a clear, level area outdoors before
starting. Do not operate machine on a paved, concrete
or gravel surface. Do not operate in the vicinity of
bystanders. Make sure cutting chamber is empty before
starting.
3.3.1 STARTING
Before starting, fill engine with oil to the correct level.
1.
See engine manual for operation and maintenance
instructions. NOTE: Some oil usage is normal. Check
level with each use.
Before starting, fill fuel tank with fresh, clean unleaded
2.
regular gasoline. This is a four stroke engine—DO NOT
MIX OIL WITH GASOLINE.
Obtain and wear safety glasses at all times when
operating the machine. Do not wear loose fitting clothing.
The operator should always wear heavy boots, gloves,
pants and shirt. Use common sense and practice safety
to protect yourself from branches, sharp objects, and
other harmful objects.
Move choke lever to RUN position.
6.
Once engine is running and no choke is needed,
7.
slowly let belt engagement pedal up, which will allow
the rotor to turn.
If engine kills when engaging belt, either adjust choke
8.
or increase engine RPM.
When belt is engaged, the foot pedal may vibrate or
9.
shake until the engine and rotor have increased to full
running RPM.
The chipper frame assembly can turn 360 degrees
10.
clockwise or counterclockwise. Press down on the foot
pedal located underneath the frame near the tow hitch,
and the frame will pivot on the trailer to your desired
location. Let up on the foot pedal, and the frame will
lock into place for use. The discharge tube can also
turn 360 degrees.
6 INCH CHIPPER
13
CONTROLS AND OPERATION
3.3 OPERATION (CONT.)
3.3.2 STOPPING
1. Move throttle to SLOW position.
2. Depress belt engagement pedal.
3. Move throttle to STOP position (or shut off key switch)
and remove spark plug wire from the spark plug.
4. Allow machine to come to a complete stop. You may
release the belt engagement pedal to help slow the
rotor once the engine has stopped running.
NOTE
The heavy rotor will continue to turn for some time after
the engine or tractor 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.
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!
3.3.3 CHIPPING
The Bear Cat chipper is designed to chip a variety of
materials into a more readily decomposing or handled
condition. The following guidelines can be used to help
you get started.
3. Place limb, butt end first, into the chipper chute until it
contacts the chipper blades. The actual feed rate of the
limb into the chipper depends on the type of material
fed and the sharpness of the cutting blades.
4. Never lean over the infeed 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
go through the chipper, are expensive to replace, and
cause major damage. In addition, metal pieces can be
shot back like shrapnel to injure or kill the operator or
bystanders.
6. Feed brush from the side of the infeed chute, rather
than from the front. Then, step aside to avoid being hit
by the brush moving into the chipper.
7. Never push brush into the feed chute with your feet.
8. Engage the hydraulic feed by moving the control arm.
Pull the arm toward you to engage the hydraulic feed.
In the forward direction, the feed rate increases as the
arm is moved.
9. 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. Alternately
insert and retract the limb or insert continuously at a
rate that will not kill the engine.
10. Chipping dead, dry material will create heat and dull the
chipping blades quickly. Alternate greener material with
dry material to lubricate the chipping blades for longer
life and better performance. When the chipping blades
become dull, they will require sharpening. Refer to the
Service and Maintenance section for more information
on sharpening blades.
WARNING
Do not leave machine unattended. Do not inspect, or
service the machine unless the engine is stopped and
the spark plug is disconnected from its wire.
1. Be sure the unit is at full operating speed before you
start to chip material.
2. Select limbs that are up to 6 inches in diameter. Trim
side branches that cannot be bent enough to feed into
the chipper chute. Small diameter branches can be held
together in a bundle and fed in simultaneously.
14
6 INCH CHIPPER
NOTE
For instructions on using the hydraulic feed kit, see
Section 4.
Feed Control
Lever
Forward
Reverse
Neutral
4
Section
HYDRAULIC FEED
4.1 HYDRAULIC FEED INSTRUCTIONS
CAUTION
Handle pressurized hydraulic fluid carefully. Escaping
pressurized hydraulic fluid can have sufficient force to
penetrate your skin causing serious injury. This fluid
may also be hot enough to burn. Serious infection or
reactions can develop if proper medical treatment is not
administered immediately.
4.1.1 FLUIDS
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.
4.1.2 HYDROSTATIC PUMP START UP PROCEDURE
Follow this start-up procedure when starting a new
installation or when restarting an installation in which the
hydrostatic pump has been removed from the system.
1. Before starting the hydrostatic pump, make sure all sys-
tem components (reservoir, fittings, etc.) are clean.
WARNING
Do not start engine unless pump is in neutral or detent
position on the cable.
2. Fill the reservoir with recommended hydraulic fluid,
which should be filtered before entering the reservoir.
7. Check to make sure 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.
Figure 4.1, Hydrostatic pump components
4.2 CONTROL ARM OPERATION
1. Start the chipper engine. Bring the chipper up to operating speed. See Section 3, "Controls and Operation,"
for starting, chipping and stopping instructions.
2. Engage the hydraulic feed by moving the control arm
as shown in Figure 4.2. In the forward direction, the
feed rate increases as the arm is moved.
3. Feed the branch (up to six inches in diameter).
4. If the chipper jams, reverse the feed by moving the
control arm in the reverse direction. Remove the branch
and rotate it before inserting it into the chute again.
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.
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 in both directions for several minutes until
any remaining air is purged from the unit. Refill the
reservoir as necessary.
6 INCH CHIPPER
Figure 4.2, Control arm operation
15
HYDRAULIC FEED
4.3 HYDRAULIC FEED MAINTENANCE
Check the reservoir daily for proper fluid level, the presence
of water (noted by a cloudy to milky appearance, or
free water in bottom of reservoir), and rancid fluid odor
(excessive heat).
The hydrostatic pump normally does not require regular
fluid changes. The system filter should be changed at
either 250 hour or annual intervals, whichever comes
first. 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.
16
6 INCH CHIPPER
ELECTRONIC FEED SENSOR
5
OPTIONAL KIT FOR HYDRAULIC FEEDS
Section
5.1 INSTALLING THE SENSOR
NOTE
For more detailed instructions on the feed kit, including
information on how to program the LOFA control, refer
to the instructions included with the kit.
Remove the drive belt guard.
1.
On the collar located on the rotor shaft behind the chip-
2.
per drive pulley, replace the set screw with the 5/16"
x 1-1/2" bolt included in the kit.
Using the existing bearing bolt, attach the sensor and
3.
bracket under an upper bearing bolt so that it lines up
with the 5/16" x 1-1/2" bolt from Step 2.
Remove outer and inner plugs from the relief valve and
4.
install the solenoid cartridge valve and coil..
5.
Connect the solenoid valve and harness to the LOFA
control and attach the ground wires to the frame. Route
positive lead near the hitch.
Replace the drive belt guard.
6.
Connect the positive lead to a +12 Volt DC power
7.
source.
Mount LOFA control and route wires according to
8.
Figure 5.1.1.
Program the system using the instructions included
9.
with the feed kit and operate the chipper per manual
instructions.
Figure 5.1.2, Relief valve before installing the coil and valve
Figure 5.1.3, Relief valve after installing the coil and valve
Figure 5.1.1, Installing the electronic feed sensor
6 INCH CHIPPER
17
6
Section
SERVICE & MAINTENANCE
6.1 MAINTENANCE SCHEDULE
The items in the service and maintenance schedule are
to be checked, and if necessary, corrective action taken.
This schedule is designed for units operating under normal conditions. If the unit is operating in adverse or severe usage conditions, it may be necessary for the items
to be checked and serviced more frequently. See the engine owners manual for further engine maintenance and
troubleshooting problems.
SERVICE AND MAINTENANCE SCHEDULE
COMPONENT
AIR CLEANER CHECK AND CLEAN (1)
AIR INTAKE CLEAN (1)
ENGINE OIL CHANGE (1)
FUEL FILTER REPLACE
SPARK PLUG
ENGINE OIL
FUEL TANK FILL
MAINTENANCE
REQUIRED
CHECK CONDITION AND
GAP
CHECK
REFER TO
ENGINE
OPERATOR
MANUAL
WARNING
To prevent personal injury or property damage, shut
off engine, disconnect spark plugs, and make sure all
moving parts have come to a complete stop before
servicing, adjusting or repairing.
FREQUENCY
EVERY 8
HOURS
EVERY
25
HOURS
EVERY
50
HOURS
EVERY
200
HOURS
EVERY
YEAR
CHECK 1/16" TO 1/8" CLEAR
CHIPPER ANVIL
CHIPPER BLADES
ALL INTERNAL AND
EXTERNAL NUTS AND
BOLTS
BELT CONDITION
BELT TENSION
GREASE ZERKS LUBE
ENTIRE MACHINE CLEAN
HYD. OIL FILTER REPLACE
WHEEL BEARINGS CHECK AND REPACK
(1) PERFORM MORE FREQUENTLY UNDER EXTREMELY DUSTY CONDITIONS.
(2) PERFORM MORE FREQUENTLY WHEN CHIPPING DRY OR DIRTY WOOD.
As the Chipper Limited Warranty states, failure by the Owner to perform normal maintenance will void the machine's
warranty. The aggressive, high-speed nature of chipping REQUIRES THE OWNER TO PERFORM THE ABOVE LISTED
NORMAL MAINTENANCE. Special consideration to maintain and re-torque the CHIPPER ANVIL, CHIPPER BLADES,
AND ALL INTERNAL AND EXTERNAL NUTS AND BOLTS is the sole responsibility of the Owner. Failure by the Owner
to do so shall be cause for Bear Cat to deny warranty.
18
ANCE AND RE-TORQUE TO
75 FT- LBS. (2)
CHECK SHARPNESS AND
RE-TORQUE TO 120 FT-
LBS. (2)
RE-TORQUE PER ASSEMBLY
TORQUE CHART
CHECK
CHECK
-
6 INCH CHIPPER
SERVICE & MAINTENANCE
6.2 SHARPENING CHIPPER BLADES
WARNING
Before inspecting or servicing any part of the machine,
shut off engine, disconnect spark plugs, 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 assembly has a lock mechanism. When
working on the rotor assembly, use the lock mechanism
at all times. Remove plastic bearing 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 front side. Install a punch through the rotor
shaft and bracket to lock the rotor in place.
The chipper blades will eventually become dull, making
chipping difficult. It is recommended that the chipper blades
are sharpened every 5-15 hours of chipper operation. To
remove the chipping blades for sharpening:
CHIPPING BLADE SHARPENING TIPS
Poor chipping performance is usually a result of dull
chipping blades. If your chipper's performance has
decreased, check for the following symptoms:
• Severe vibration when feeding material into the chipper.
• 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 for
permanent damage. Replace the blade if:
• The blade is cracked (especially around the bolt holes)
or the edges are too deeply chipped to be ground
smooth.
• The base of the cutting edge is worn or has been resharpened so that it is too close to the rotor chipping
slot.
1. Remove the two retaining bolts holding access cover
to main frame assembly.
2. Tilt access cover over to allow rotor access. Rotate
the rotor so that the bolts holding a chipping blade are
most accessible.
3. Remove the two nuts holding the blade itself. Repeat
for all four blades. The four chipping blades have two
edges per blade and can be reversed one time each
before sharpening. If both sides have not been used,
remove and reverse the chipping blades. Reinstall
chipping blades and proceed with chipping.
To grind the angled edge of the chipping blade to 45
degrees (see Figure 6.2): Grind the blades on a slowspeed wet grinder if possible, or have them sharpened by
a professional. If you use a bench grinder, 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 from each blade to
maintain balance. Replace the chipping blades and tighten
bolts to 120 ft-lbs. Close cover and replace bolts.
Figure 6.2, Sharpening the chipper blades
6.3 SETTING BLADE CLEARANCE
The four-edged chipping anvil located directly behind the
chipper chute should clear the chipping blade by 1/16 inch
to 3/16 inch (Figure 6.3, page 19). The chipping anvil is
adjustable and reversible.
To Adjust:
1. Lift rotor access cover and expose rotor. Loosen the
three 1/2 inch bolts that hold the chipper anvil to the
frame.
2. Measure the amount of clearance between chipping
blade and chipping anvil from inside of housing.
3. Adjust inward or outward to desired measurement.
4. Tighten bolts on chipping anvil to 75 ft-lbs. and resume
operation.
If the 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.
6 INCH CHIPPER
19
SERVICE & MAINTENANCE
6.3 SETTING BLADE CLEARANCE (CONT.)
Figure 6.3, Chipping anvil bolts
Figure 6.4.1, Belt tension
6.4 ADJUSTING/REPLACING DRIVE BELT
Check the condition of the drive belt annually or after every
25 hours of operating, whichever comes first. If the belt is
cracked, frayed, or worn, replace it. To replace or adjust
drive belt, proceed as follows:
Shut off engine and disconnect spark plugs.
1.
Remove belt guard.
2.
Remove the hydraulic pump belt by loosening the bolts
3.
on the hydraulic pump (for hydraulic feed units only).
Take the tension off the drive belt by depressing the
4.
belt engagement pedal, loosening the engine bolts,
and sliding the engine back. Then, remove the drive
belt from pulleys.
Install the new belt on pulleys. Slide engine back into
5.
place and tighten bolts to proper torque.
Check pulley alignment with a straight edge and adjust
6.
if needed.
Check belt tension and adjust if needed. The belt de-
7.
flection at the center of the belt should be 7/16" when
a 20 lb. load is placed against the belt (see Figure
6.4.1).
Replace hydraulic pump and hydraulic pump belt.
8.
Replace belt guard.
9.
Depress belt engagement pedal, start engine, engage
10.
drive belt, and test unit. Readjust pulleys and belt tension if needed.
Figure 6.4.2, Chipper pulley system
6.5 CLEARING PLUGGED ROTOR
WARNING
If the machine becomes plugged, shut off engine,
disconnect spark plugs, and allow the machine to
come to a complete stop before cleaning debris. Do
not operate the machine without proper guards and
screens in place.
1. Stop engine and disconnect spark plugs.
2. Remove rotor access cover.
3. Clean the debris out of the chipping rotor. Turn the
rotor by hand to be sure it is free to rotate.
4. Close rotor access cover and replace bolts.
5. Depress belt engagement pedal, start engine, and
resume operation.
20
6 INCH CHIPPER
SERVICE & MAINTENANCE
6.6 REPLACING BEARINGS
1. Remove the two 3/8 inch retaining bolts holding access
cover to main frame assembly. Tilt access cover over
to allow rotor access.
2. Remove large belt guard.
3. Loosen bolts on hydraulic pump and remove hydraulic
pump belt (for hydraulic feed units only).
4. Depress belt engagement pedal, loosen engine bolts
and slide engine to loosen belt tension. Then remove
drive belt from pulleys. Using the push bolts from the
bushings, remove the bushings and pulleys from the
rotor shaft.
5. Remove the four 1/2 inch bolts on each rotor bearing
and remove the punch used to lock the rotor.
6. Using an overhead hoist or lifting device, lift the rotor
assembly completely out of the frame. The complete
rotor assembly is 275 lbs.
7. Once the rotor assembly is out of the frame, remove
3/8" bolts and collar from front. Remove both bearings
and place new bearings on rotor shaft. Replace collar.
8. Use the overhead hoist or lifting device to return the
complete rotor assembly to the chipper frame.
9. Slide rotor back until the front collar is tight against
the front bearing. Lock the front bearing and install the
four 1/2 inch bolts on each bearing to secure them to
the frame. Tighten bolts to 75 ft-lbs. Check and adjust
chipper anvil if needed. Lock rear bearing.
IMPORTANT
Every 8 hours of operation, check the bolts on the
following for correct torque:
• Hydraulic feed roller bearing
• Hydraulic motor mounting
• Chipper rotor bearing
• Chipper blades
• Rotor paddles
• Chipper anvil
CAUTION
Failure to maintain proper fastening torque on bolts
for the components listed above may result in severe
damage to the chipper and/or personal injury!
6.7 GREASEABLE BEARINGS
The 71620 and 72620 models have five grease zerks on
them. Minimal periodic greasing is needed on these points
every 50 hours:
• Two bearings on the rotor shaft.
• One bushing on the belt engagement pedal pivot.
• One grease zerk on idler pivot.
• One grease zerk on discharge chute.
10. Slide rear collar on shaft against rear bearing. Slide
bushing onto shaft with flange against collar and
lock bushing to shaft. Attach large pulley to bushing.
Replace drive belts on pulleys, slide engine back into
place, and retighten bolts. Check alignment of pulleys
and belt tension. Adjust if needed.
11. Replace hydraulic pump belt. Readjust hydraulic pump
belt tension by sliding the hydraulic pump in the mounting slots. Tighten bolts.
12. Replace belt guard and resume operation.
13. Depress belt engagement pedal, start engine, engage
drive belt, and test unit. Readjust pulleys and belt tension if needed.
6 INCH CHIPPER
21
7
TROUBLESHOOTING
Section
Before performing any of the corrections in this troubleshooting chart, refer to the appropriate information contained in
this manual for the correct safety precautions and operating or maintenance procedures. Contact your nearest dealer
or the factory for service problems with the machine.
PROBLEM POSSIBLE CAUSE REMEDY
Improper control settings. Use proper settings.
Spark plug wire is disconnected. Connect loose wire to spark plug.
Spark plug is defective. Replace spark plug.
Lack of fuel.
Engine will not start or is hard to start.
Engine or disk stalls or stops.
Chipper does not chip.
Hard to feed chipper; requires
excessive power to chip.
Engine stalls or belt squeals
when engaging belt.
Material from chipper wraps
around disk shaft.
Excessive vibration while running.
Disk will not turn.
Cannot engage belt.
Trailer sways during towing. Tire air pressure not correct Check tire sidewall for inflation limits.
Dirty, stale or contaminated fuel. Refill tank with fresh, clean fuel.
Gas line is obstructed.
Internal engine problems. See your dealer.
Flooded engine.
Obstructed discharge. Use branch or similar object to clear discharge.
Plugged disk. Clear disk. Feed material more evenly.
Bad spark plug. Inspect spark plug and replace if necessary.
Incorrect choke setting. Change choke setting.
Dirty air filter. Clean or replace air filter.
Dull chipper blades. Rotate or sharpen blades.
Drive belts loose or worn. Replace drive belts, or increase spring tension.
Attempting to feed branches that are too large. Limit branch size to 6 inches in diameter.
Broken or missing chipper blade Replace blade.
Dull chipper blades. Rotate or sharpen blades.
Obstructed discharge. Use branch or similar object to clear discharge.
Improper blade clearance. Adjust clearance between the chipper blades and anvil.
Engaging belt too fast. Lower engagement handle more slowly.
Plugged disk. Clear disk. Feed material more evenly.
Belt tension too loose. Replace belt or spring.
Stringy, green material bypasses chipper blades. Rotate branch or material when feeding to cut completely.
Dull chipper blades. Sharpen blades.
Improper blade clearance. Adjust clearance between the chipper blades and anvil.
Drive system vibration.
Solid object jammed in the unit. Check and remove obstruction.
Disk out of balance.
Chipper blade/anvil clearance is incorrect.
Engine crankshaft is bent or damaged. See Engine Service Dealer.
Loose or missing bolts on unit.
Drive belt too loose or broken. Replace belt or spring.
Obstructed discharge. Use branch or similar object to clear discharge.
Plugged disk. Clear disk. Feed material more evenly.
Improper belt installation. Install belt properly.
Improper belt tension. Replace belt or spring.
Fill fuel tank.
Remove gas line at carburetor and check for obstruction. Drain
gas tank and refill with fresh, clean gasoline.
Put throttle control in run position and crank engine several times
to clear out excess gas.
Check drive belts and pulleys for bad or worn areas. Check for
dull chipper blades.
Inspect disk for broken or missing chipper blades; replace if
needed. Check disk to see if it wobbles. Check to see if disk is
assembled correctly.
Set chipper blade/anvil clearance to recommended distance
(1/16" to 1/8").
Tighten or replace bolts.
22
6 INCH CHIPPER
7.2 HYDROSTATIC PUMP TROUBLESHOOTING
PROBLEM PROBABLE CAUSE SUGGESTED SOLUTIONS
Engine not operating at correct speed. Repair engine governor.
Control linkage damaged or binding. Repair control linkage.
Will not attain normal
feed rate
Bypass valve stuck partially open (Problem
in one direction only).
Control linkage damaged or not connected. Repair or reconnect control linkage.
TROUBLESHOOTING
Repair bypass valve.
Remove foreign material from valve.
Will not feed when control arm is moved.
Feed rate is sluggish
under load.
Hydraulic feed will not
pull in logs over 6" in
diameter.
Drive between engine and pump damaged.
Pump low on uid.
Loose drive belt between engine and pump.
Pump low on uid.
Large amount of water in hydraulic uid
(evaporates when hot, resulting in low uid
level).
Hydraulic system overloading.
Repair drive (replace broken belt, repair
sheared key, repair spined coupling, etc.)
Rell reservoir. Purge air from transmission.
Tension drive belt (replace if necessary).
Rell reservoir. Purge air from transmission
if necessary.
Drain uid from reservoir and unit, replace
lter element, and rell with new uid.
Check relief pressure in system with a pressure gauge rated to 2500 psi (system set by
factory at 1750 psi).
6 INCH CHIPPER
23
8
SPECIFICATIONS
Section
8.1 CHIPPER SPECIFICATIONS
Overall Size (L x W x H)
Max. Chipper Cap. (dia.) 6" 6"
Chipper Blade Qty. 4 Reversible Tool Steel 4 Reversible Tool Steel
Feed Type Gravity Feed Hydraulic Feed
Rotor Speed 1500 RPM 1500 RPM
Rotor Size 30" dia. x 1.25" 30" Dia. x 1.25"
Rotor Weight 275 lbs. 275 lbs.
Rotor Shaft Diameter 1.75" 1.75"
Discharge Size 8" 8"
Drive Type Belt Belt
Belt Size 3B83 3B83
Weight (Lbs.)
Wheel Base 66" 66"
Tire Size 5.31-12 5.31-12
Fuel Tank Cap. (Gal.)
Engine Honda 20HP Honda 20HP
71620 72620
76" x 80" x 90" 93" x 80" x 90"
1445 1865
6 6
24
6 INCH CHIPPER
SPECIFICATIONS
A
SAE - 2
SAE - 5
SAE - 8
A
4.8
8.8
10.9
12.9
8.2 BOLT TORQUE
The tables below are 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. Bear Cat is not responsible for any loss or
damage resulting from the use of this information. In developing these tables, Bear Cat has made a determined effort
to present the contents accurately.
ENGLISH
BOLT TORQUE *
BOLT DIAMETER
1/4” 7.5 5.5 9.5 9 17 12.5
5/16” 15 11 25 18 35 26
3/8” 27 20 44 33 63 46
7/16” 44 32 70 52 100 75
1/2” 67 50 110 80 150 115
9/16” 95 70 155 115 225 160
5/8” 135 100 215 160 300 225
3/4” 240 175 375 280 550 400
7/8” 240 175 625 450 875 650
1” 360 270 925 675 1300 975
1-1/8” 510 375 1150 850 1850 1350
1-1/4” 725 530 1650 1200 2600 1950
SAE 2 SAE 5 SAE 8
(N.m.) (Ft-lbs.) (N.m.) (Ft-lbs.) (N.m.) (Ft-lbs.)
* Torque value for bolts and capscrews are
identified by their head markings.
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%.
METRIC
BOLT DIAMETER
M3 0.5 0.4 - - - - - -
M4 3 2.2 - - - - - -
M5 5 4 - - - - - -
M6 6 4.5 11 8.5 17 12 19 14.5
M8 15 11 28 20 40 30 47 35
M10 29 21 55 40 80 60 95 70
M12 50 37 95 70 140 105 165 120
M14 80 60 150 110 225 165 260 190
M16 125 92 240 175 350 255 400 300
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
4.8 8.8 10.9 12.9
BOLT TORQUE *
6 INCH CHIPPER
25
ECHO Bear Cat
237 NW 12th Street, West Fargo, ND 58078-0849
Phone: 701.282.5520 • Toll Free: 800.247.7335
Fax: 701.282.9522 •
E-mail: service@crary.com • opesales@crary.com
www.BearCatProducts.com
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