Echo 73413 Owners Manual v.2

Chipper

Owners Manual

Chipper Models:

73413 13hp Honda
73420 20hp Honda
73454 PTO

Crary Company

Box 849
West Fargo, ND 58078
[phone]
FAX: [phone]

• [phone]

Manufactured in the

United States of America

by Crary Company

Cat. No. 12127

Manual No. 1297

Dear Bear Cat Customer,

Thank you for purchasing a Crary Bear Cat Chipper.
The Bear Cat Chipper is designed, tested, and
manufactured to give years of dependable
performance. T o keep your chipper 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 the chipper.

How to Contact

Bear Cat

A

DDRESS

Crary Bear Cat

237 NW 12th Street

PO Box 849

West Fargo, ND 58078

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

If you have any questions or problems with your
chipper, please call or write your local factory­authorized Bear Cat dealer.

Please Send Us Your Warranty Card

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

Owner's Record

Please take a moment to record the
following information about your chipper. If
you need to call for assistance, please be
ready to provide your model and serial
numbers. This information will allow us (or
your dealer) to help you more quickly when
you call.

800-247-7335
701-282-5520

Fax: [phone]

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

Central Time

Serial Number Decal Location

P

H

HONE

OURS

Model Number

Serial Number

Serial Number Decal

Chipper Limited Warranty

Crary Bear Cat Chipper models 73413, 73420, and 73454 are warranted for two
years from date of sale for consumers and 90 days from the date of sale for
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 which 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 non­use.

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. Y ou may also have other rights which vary from state to state.

Be sure to note the chipper serial number in any correspondence with Crary Co.
or any authorized Bear Cat dealer. The serial number is located on the chipper
trailer.

Warranty

Contents

Safety Instructions ........................................................................2

Engine Model Assembly ...............................................................6

PTO Model Assembly....................................................................9

Operation .....................................................................................10

Attach the Trailer Axle ............................................................................. 6

Attach the Trailer Wheels ......................................................................... 6

Attach the Hitch ....................................................................................... 6

Attach the Chute ......................................................................................6

Attach the Blower Discharge Tube ...........................................................6

Connect PTO Shaft..................................................................................9

Starting: 13 HP Honda ........................................................................... 10

Starting: 20 HP Honda .......................................................................... 10

Starting: PTO Models.............................................................................11

Chipping ................................................................................................. 11

Stopping Instructions: Engine Models .................................................... 12

Stopping Instructions: PTO Models........................................................ 1 2

Service and Maintenance ...........................................................13

Sharpening Chipper Blades .................................................................... 13

Chipping Blade Sharpening Tips............................................................. 14

Setting Chipping Blade Clearance .......................................................... 14

Adjusting Drive Belt ............................................................................... 15

Replacing Drive Belt............................................................................... 1 5

Clearing Plugged Rotor........................................................................... 16

Repairing or Replacing Rotor Bearings ................................................... 16

Greaseable Bearings .............................................................................. 17

Trailer Service Tips ................................................................................ 17

Service and Maintenance Schedule ....................................................... 18

Troubleshooting..........................................................................19

Specifications ..............................................................................20

Warranty

1

Safety Instructions

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

A safety message alerts you to potential hazards that could hurt you or others. Each safety
message is preceded by one of three words: DANGER, WARNING, or CAUTION.

Y ou WILL be KILLED or

DANGER

SERIOUSL Y HUR T if you don't
follow instructions

WARNING
CAUTION

Before Operating

• Do not operate this equipment before reading and understanding the owners

• Do not allow children to operate this equipment.

• Do not operate this equipment in the vicinity of bystanders.

• Do not run this equipment in and enclosed area; carbon monoxide is extremely

• Do not allow hands, or any part of body or clothing, inside the feeding chamber,

• Shut off the engine and ensure all moving parts are stopped before inspecting or

Preparation

Y ou CAN be KILLED or
SERIOUSL Y HUR T if you don't
follow instructions.

Y ou CAN be HUR T if you don't
follow instructions.

manual. See engine owners manual for additional safety information.

dangerous. The engine exhaust contains carbon monoxide, a colorless, odorless,
and tasteless gas.

discharge chute, or near any moving part.

servicing any part of the machine.

• Obtain and wear safety glasses at all times while operating the machine. One pair of

safety glasses is provided.

• Avoid wearing loose-fitting clothing. Never operate this machine wearing clothing

with a drawstrings that could wrap around or get caught in the machine.

• Operate the machine only on a level surface. Do not operate the machine on a

paved, concrete, or hard gravel surface. Operating on a hard surface may cause
discharged material to rebound and kickback. Increased machine vibration will also
result causing machine movement and premature wear of parts or loosening of
fasteners.

• Check all screws, nuts, bolts, and other fasteners are properly secured before start-

ing the machine. Check all screws, nuts, bolts, and other fasteners for proper
tightness to ensure everything is in proper working condition once every 10 hours
of operation.

2

Safety Instructions-Cont.

Operation

Setting up your chipping site so you are not endangered by traffic and the public is not
endangered by your work is critical for safety . T ake great care to provide adequate
warning by way of signage and coning, if diverting vehicles or pedestrian traffic is
necessary .

A well-prepared traffic plan includes parking off the highway whenever possible. Cone
the work area as soon as the chipper vehicle is stopped. Avoid sudden traffic stoppage
or lane diversion. Do not allow pedestrians to walk through the work area. Ensure chips
or dust do not blow into traffic, parked cars, or pedestrians.

• Check the cutting chamber to verify it is empty before starting the machine.

• Exclude pieces of metal, rocks, bottles, cans, and other foreign objects when feed-

ing chipable material into the machine.

• Shut off the engine 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:

1. Inspect for damage.

2. Replace or repair any damaged parts.

3. Check for and tighten any loose parts.

• Check the bolts on the following for correct torque (75 ft. lbs.) every 10 hours of

operation:

• Chipper rotor bearing

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

• Rotor paddles

• Chipper anvil
Failure to maintain proper fastening torque (75 ft. lbs.) on component bolts listed

above may result in severe damage to the chipper and/or personal injury .

• Do not allow processed material to build up in the discharge area; this may prevent

proper discharge and can result in kickback of material through the feed opening.

• Do not attempt to operate the chipper with any of the guards, deflectors, or shields

removed. Keep away from moving parts.

• Keep all guards, deflectors, and shields in good working condition.

• Stand clear of the discharge area when operating this machine.

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

• Do not overreach. Keep proper balance and footing at all times.

• Do not transport or move machine while the machine is running.

• Shut off engine and allow machine to stop completely before clearing debris if the

machine becomes clogged.

3

Safety Instructions-Cont.

Safety Rules for Towing

• Rotate the discharge tube to face the opposite direction of the towing vehicle before

towing. This prevents the discharge tube from projecting over the trailer wheels and
striking foreign objects.

• Connect hitch safety chains. Tighten and secure trailer hitch bolts. Do not attempt

to tow the trailer if vehicle is not equipped with a 2" ball.

• Maximum towing speed is 55 M.P .H. Inflate tires to manufactures specs. as stated

on the tire sidewall. Check wheel lug bolts periodically to ensure they are tight and
secure.

• Make sure the jack stand on trailer is in the UP position to clear the ground during

towing. Place the jack stand on a level surface and secure it in the DOWN position
before use.

• Never allow passengers to ride on the chipper chute while the vehicle is moving,

whether the chipper is running or not.

Additional Safety Rules for PTO Models

• Stay alert and pay attention when PTO chipper is operating.

• Keep bystanders, especially children, away from PTO driveline.

•

Connect 3 pt. hitch pins and snap pins, connect PTO driveline, and have leg stands
solidly on the ground when in use to maintain proper spacing.

• Check the driveline to ensure it is attached securely to the tractor.

• Keep guards and shields in place at all times while operating. Disengage tractor

PTO and shut off engine before removing guards or shields.

Torque Chart

Standard minimum tightening
torque for normal assembly
applications.

Bolts (SAE GR5)

Size Ft. Lbs.
5/16" 20
3/8" 35
1/2" 75
5/8" 90

Screws

Size Ft. Lbs.
5/16" Set 15

4

Safety Instructions-Cont.

• Keep hands, feet, and clothing away from all PTO drive parts.

• Do not clean, lubricate, or adjust the PTO shaft when it's running.

• Clothing worn by operator must be fairly tight. Never wear loose-fitting

jackets, shirts, or pants when working around the PTO. Tie long hair
back or put under a cap.

Maintenance and Storage

See engine owners
manual or contact
the engine
manufacturer for
engine safety and
instruction decals.

• Keep hydraulic hoses, electric cords, chains, and other items from

contacting the driveline.

• Make sure tractor is in neutral or park and PTO is disengaged before

starting the tractor.

• Do not exceed the recommended 540 RPM PTO operating speed.

• Disconnect the spark plug wire when this equipment is stopped for service, inspec-

tion, storage, or to change an accessory .

• 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.

• Store the machine out of the reach of children and where fuel vapors will not reach

an open flame or spark. Drain the fuel and dispose of it in a safe manner for storage
periods of three months or more. Cool machine before storing.

5

Engine Model Assembly

Y our chipper may arrive totally or partially assembled. Perform the steps in this section
if your chipper arrives partially assembled.

Attach the Trailer Axle

1. Remove the chipper from the shipping crate.

Do not operate
this unit without
the chipper chute
correctly installed.
Rotating cutting
blades can cause
serious personal
injury.

Chart at the bottom of page 4 for minimum tightening torque of bolts and screws.

3. Raise the trailer several inches from the ground with a hoist or jack. Ensure the
chipper is securely supported.

4. Position the fenders over the axle and secure with eight 3/8 x 1-1/4" bolts and nuts.

5. Align the torsion axle with the mounting brackets on the sides of the chipper trailer .
Secure with four 1/2 x 1-1/4" bolts and nuts.

Attach the Trailer Wheels

2. Place the unit on a level surface before attempting to assemble it. See the T orque

1. Hold one wheel to a hub and align the wheel lug holes with the hub lug holes (see
figure 1).

2. Thread the lug bolts into the holes and tighten to 75 ft. lbs. Follow a star pattern
when tightening lug bolts.

3. Repeat for the remaining wheel.

Attach the Hitch

1. Insert the adjustable hitch into the hitch channel on the trailer bottom.

2. Insert a 3/8 x 3-1/2" bolt through the bolt hole in the adjustable hitch as shown in
figure 1.

3. Secure with a washer and nut.

2. Place the jack stand on the side of the hitch and secure with the snap pin.

Attach the Chipper Chute

1. Mount the chipper chute to the chipper housing using eight 3/8 x 1-1/2" bolts and
locknuts (see figure 2).

Attach the Blower Discharge Tube

1. Attach the blower discharge tube to the mounting flange on the chipper frame (see
figure 3). Half of the mounting clamp is already attached to the tube.

2. Slide the tube into the flange and tighten the bolts to secure it.

3. Install the second half of the clamp to the tube and flange.

4. Grease the chute to allow free rotation. Rotate the tube 360 degrees and lock it in
place with the handle to make sure it is mounted correctly .

6

Engine Model Assembly-Cont.

Before Using

Fill the engine with oil (per instructions in supplied engine manual) and fill the fuel tank
with fuel.

Figure 1

7

Engine Model Assembly-Cont.

Figure 2

Blower Discharge Tube

Mounting Clamp

Mounting Flange

Figure 3

8

PTO Model Assembly

Connect PTO Shaft

1. Connect the PTO shaft female end to the rotor shaft using key stock and two set

screws contained in the owners kit.

2. Connect the opposite end of the PTO shaft to the tractor .

3. Check all screws, bolts, and nuts for tightness. See torque chart on page 4 for

correct tightness.

Refer to previous pages for instructions on chipper chute and discharge chute assembly .

9

Operation

Starting Instructions: 13 HP Engine Models

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.

NOTE: Normal engine output is 3600 RPM no load.

1. Before starting be sure to check engine oil level.

2. T urn engine fuel valve to the ON position, and move choke lever to the CLOSE
position. NOTE: the choke may not be needed if the engine is warm or the air

temperature is high.

3. Depress the clutch pedal and start the engine. Pull the starter cord until light resistance
is felt and then pull briskly .

4. As the engine warms, gradually move the choke lever to the OPEN position.

5. Slowly release foot pedal to engage chipper .

Starting Instructions: 20 HP Engine Models

NOTE: Normal engine output is 3600 RPM no load.

1. Check engine oil level before starting.

2. T urn engine fuel valve to the ON position, and move choke lever to the CLOSE
position. NOTE: the choke may not be needed if the engine is warm or the air

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.

temperature is high.

3. Move the throttle level towards the F AST position approximately 1/3 of the way .

4. Depress the clutch pedal and turn the engine switch to ST ART and hold until the
engine starts.

Release the key if the
engine fails to start
within 5 seconds.
Failure to release starter
will overheat and
possible damage the
starter. Wait 10 seconds
before trying again.

10

5. Release the key when the engine starts and allow it to return to the ON position.

6. Gradually move the choke lever to the OPEN position as the engine warms.

7. Slowly release foot pedal to engage chipper .

Operation- Cont.

Starting Instructions: PTO Models

1. Place tractor transmission in neutral and set parking brake.

This chipper is designed
to be used with tractor
PTO's rated at 15 to 40
horsepower. Using this
chipper with PTO's
above 40 horsepower
may cause belt and
machine damage in
overload conditions.

Chipping

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!

2 Connect 3 pt. mounts between the chipper and the tractor. Secure connections with

snap pins. Adjust 3 pt. top link so that chipper sits level.

3. Connect PTO shaft to tractor . Make sure you are using the correct RPM machine.

4. Start tractor engine and engage PTO drive clutch (refer to tractor owners manual).
Increase speed to rated PTO RPM position.

Note: Do not inspect or work on PTO drive area without first disengaging PTO and
shutting off tractor engine.

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.

• Run unit at full operating speed before starting to chip material.

• Select limbs that are up to 4 inches in diameter. T rim side branches that cannot be

bent enough to feed into the chipper chute. Hold small diameter branches together
in a bundle and fed in simultaneously .

• 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.

• Do not lean over the chipper chute to push objects into the cutting device. Use a

push stick or brush paddle.

• Never use shovels or forks to push brush. They can be chipped, are expensive to

replace, and cause extensive damage. In addition, metal pieces can come back to
injure or kill.

• Never push brush into the chipper chute with your feet.

• 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.

• Stop the material feeding and allow the engine to recover if the engine slows to

where it may stall.

• Remove the branch and rotate it before reinserting it into the chute if the chipper jams.

• Alternately insert and retract the limb or insert continuously at a rate that will not

kill the engine.

• Chipping dead, dry material will create heat and dull the chipping blades quickly .

11

Operation- Cont.

• 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 periodic sharpening. Refer

to Service and Maintenance, "Sharpening Chipper Blades."

Do not leave machine unattended, or attempt any inspection
or service unless the engine is stopped and the key removed
from key switch.

Stopping Instructions: Engine Models

1. Move throttle to slowest position.

2. Depress foot clutch pedal.

3. T urn engine switch to OFF position.

4. T urn fuel valve to OFF position.

5. Release the foot clutch pedal to help slow the rotor once the engine stops.

6. Allow machine to come to a complete stop.
NOTE: The heavy rotor will continue to turn for some time after the engine stops. You

can tell that the rotor has stopped when no noise or machine vibration is
present.

Stopping Instructions: PTO Models

1. Move tractor throttle to slowest position.

2. Disengage PTO lever and shut off tractor engine.

3. Allow machine to come to a complete stop.
NOTE: The heavy rotor will continue to turn for some time after the engine stops. You

can tell that the rotor has stopped when no noise or machine vibration is
present.

12

Service and Maintenance

Before inspecting or servicing any part of the machine, shut off the engine,
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.

Check the engine oil, and change the oil and filter as recommended in the manual.
Service and replace the air cleaner as recommended.

Sharpening Chipper Blades

The chipper blades will eventually dull, making chipping difficult. It is recommended
to sharpen chipper blades every 5-15 hours of chipper operation. T o remove the
chipping blades for sharpening:

1. Remove the one 3/8 inch retaining bolt 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 hex head bolts holding the chipper blade. Repeat for all four
chipper blades. The four chipping blades have two edges per blade and can be
reversed one time each before sharpening. Remove and reverse the chipping blades
if both sides have not been used. Reinstall chipping blades and proceed with chip­ping.

4. T o grind the angled edge of the chipping blade to 45 degrees (see figure 4):

• Grind the blades on a slow-speed wet grinder if possible or have them

sharpened by a professional.

Figure 4

13

Service and Maintenance-Cont.

• Be careful when grinding so that the blade material does not get too hot

and change color if you use a bench grinder–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.

5. Replace the chipping blades and tighten bolts to 20 ft. lbs.

6. Close cover and replace bolts.

Never grind on the
back side of the
chipper blade.

Chipping Blade Sharpening Tips

Poor chipping performance is usually a result of dull chipping blades. Check for the
following symptoms if your chipper performance has decreased:

• 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.

Check for permanent damage before sharpening the chipping blades. 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 re-sharpened so that it is too close
to the rotor chipping slot.

Setting Chipping Blade Clearance

The four chipping blades should clear the chipper anvil located directly under the
chipper chute by 1/16 inch to 1/8 inch. The chipper anvil is adjustable and reversible.

To adjust:

14

1. Lift rotor access cover and expose rotor . Loosen the two 1/2 inch bolts
that hold the chipper anvil to the frame (see figure 5).

2. Measure the amount of clearance between chipping blade and chipper
anvil from inside of housing.

3. Adjust inward or outward to desired measurement using the nuts on the
adjustment bolt.

4. T ighten bolts on chipping block to 75 ft. lbs. and resume operation.

Remove the two bolts holding the anvil and use one of the other three edges
if the chipper anvil edge is damaged or worn unevenly . Adjust for correct
measurement.

Service and Maintenance-Cont.

Adjusting Drive Belt

Check the condition of the drive belt annually or after every 25 hours of operation,
whichever comes first. Replace cracked, frayed, worn, or stretched drive belt. Only
replace drive belt with original banded type belt, do not use single type belts. T o adjust the
drive belt, proceed as follows:

1. Depress foot clutch pedal.

2. Shut engine off.

3. Disconnect battery cables.

4. Remove large belt guard (three 5/16 inch bolts).

5. Adjust the eyebolt that anchors the idler spring to adjust the belt tension.

6. T ighten the eyebolt until the belt deflection at the center of the belt is 7/16" when a 2 0

lb. load is placed against the belt (see figure 6).

7. Replace belt guard.

8. Start engine and test belt for looseness.

9. Replace the belt if no adjustment is left.

Replacing Drive Belt

1. Remove large belt guard (three 5/16" bolts).

Blades are sharp; avoid contact with
chipper blades.

Adjustment
Bolt

Anvil

2. Loosen eye bolt.

3. Push belt idler pulley off drive belt.

1/16 -1/8"

Rotor

Chipper
Blade

7/16" Deflection

(20 lbs.)

Figure 6

Figure 5

15

Service and Maintenance-Cont.

Clearing Plugged Rotor

If the machine becomes
plugged, depress foot
clutch pedal, shut off the
engine, and allow the
machine to come to a
complete stop before
clearing debris. Do not
operate the machine
without proper guards
and screens in place.

4. Remove drive belt from pulleys.

5. Install new belt on pulleys and lower belt idler . Check alignment of pulleys and
adjust if needed.

6. Check belt tension before start-up. Adjust the eyebolt that anchors the idler spring
to adjust the 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 6). Move
the engine on the mounting stand if unable to attain proper tension.

7. Replace belt guard.

8. Depress foot clutch pedal, start engine, release foot clutch pedal to engage belt, and
test unit.

9. Readjust pulleys and belt tension if needed.

Feeding too much chipable material at once can plug the chipper. To clear plugged
rotor, proceed as follows:

1. Depress foot clutch pedal and stop engine. Release foot clutch pedal when engine
is stopped.

2. Remove the one 3/8" retaining bolt holding the access cover to the main frame
assembly .

3. Lift up rotor access cover .

4. Clean the debris from the chipper rotor . Release idler and turn the rotor by hand to
be sure it is free to rotate.

5. Close rotor access cover and replace bolts.

6. Depress foot clutch pedal, and start engine.

16

7. Release foot clutch pedal when engine is running to engage drive belt and resume
operation.

Repairing or Replacing Rotor Bearings

1. Remove the one 3/8 inch retaining bolt holding access cover to main frame
assembly . Tilt access cover over to allow rotor access.

2. Remove large belt guard (three 5/16 inch bolts).

3. Lift belt idler pulley off drive belt and remove belt from pulleys.

4. Remove the bushing and pulley from the rotor shaft using the push bolts from the
bushing.

5. Remove the two 1/2 inch bolts on each rotor bearing.

6. Pound 1/4" roll pin out of the rotor shaft on front bearing.

7. Lift the rotor assembly completely out of the frame with an overhead hoist or lifting
device. The complete rotor assembly is 140 lbs.

8. Remove both bearings with a puller when the rotor assembly is out of the frame and
place new bearings on rotor shaft.

Service and Maintenance-Cont

9. Replace roll pin with a new 1/2 x 2" pin, P/N 15137.

10. Return the complete rotor assembly to the chipper frame with an overhead hoist or
lifting device.

11. Slide rotor back until front roll pin is tight against the front bearing.

12. 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.

13. Check and adjust chipper anvil if needed. Lock rear bearing.

14. Slide bushing onto shaft with flange against bearing and lock bushing to shaft.

15. Attach large pulley to bushing.

16. Replace drive belt on pulleys and lower belt idler. Check alignment of pulleys and
adjust engine if needed.

17. Check belt tension before start-up. Adjust the eyebolt that anchors the idler spring
to adjust the 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 6, page 14).

18. Close cover and replace bolts.

19. Replace belt guard and resume operation.

20. Depress foot clutch pedal, start engine, release foot clutch pedal to engage belt, and
test unit. Readjust pulleys and belt tension if needed.

Greaseable Bearings and Pivots

The chipper has three greaseable bearings and pivots that require grease every 50 hours:

• Two bearings on the rotor shaft.

• One grease zerk on discharge chute.

Trailer Service Tips

• Check wheel bolt torque every 10 hours of towing use.

• Check air pressure in tires every 10 hours of towing.

• Check and repack wheel bearings with grease every 12 months.

• Connect safety chains when towing.

• Tighten and secure trailer hitch bolts.

• Check trailer lights.

17

Service and Maintenance Schedule

Inspection Items

Check Nuts & Bolts (Including Wheels &

Tire Pressure)

Check

Engine Oil

Replace

Replace Spark Plug

Check

Air Filter Element

Replace Fuel Filter

Clean
Replace

Before

Each

Use

Every

10

Hours

Every

25

Hours

Every

50

Hours

*

Interval

Every

100

Hours

Every

200

Hours

Every

300

Hours

**

Every

800

Hours

Every

1

years

Check Sharpness of Chipper Blades

Grease Bearings and Pivots

Check Bolts: Chipper Blade, Chipper

Anvil, Rotor Paddles

Check Drive Belt

Clean Machine

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

(**) Replace Paper element type only

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

Indicates first hours of use.

18

Troubleshooting

Problem

1. Rotor does not turn

2. Hard to feed chipper
or excessive power
needed to chip

3. Chipper requires
excessive power or
stalls

Probable Cause

a) Obstructed

discharge

b) Plugged rotor

a) Obstructed

discharge
b) Dull chipper blades
c) Improper blade

clearance
a) Obstructed

discharge
b) Plugged rotor
c) Green material will

not discharge

Suggested
Remedies

a) Use branch or

similar object to
clear discharge

b) Clear rotor
a) Use branch or

similar object to

clear discharge
b) Sharpen blades
c) Adjust clearance

a) Use branch or

similar object to

clear discharge
b) Clear rotor, feed

material into

shredder more

slowly
c) Alternately feed dry

material, or allow

material to dry

Reference

Service and Maintenance

Service and Maintenance

Service and Maintenance

4. Drive belts
squealing or
smoking

5. Vibration while
running

6. Engine dies or runs
poorly

a) Plugged rotor
b) Loose or worn belts

a) Drivehead vibration
b) Rotor out of balance

a) Engine problems

a) Clear rotor
b ) Adjust belt tension

or replace belts if
needed

a) Check drive belts

and pulleys for bad
or worn spots.

b ) Inspect rotor for

broken or missing
chipper blades and
paddles. Repair if
needed.

c) Check rotor to see if

it wobbles

d ) Check to see if rotor

is assembled
correctly

a) Contact local engine

service center

Service and Maintenance

Service and Maintenance

Service and Maintenance

Engine Manual

19

Specifications

Overall Size: 72" x 54" x 84"
Max Chipper Capacity (dia.): 4"
Chipper Blade Qty .: 4 Reversible T ool Steel
Rotor Size: 20" Dia. x 1.25"
Rotor Weight: 140 lbs.
Rotor Shaft Diameter: 1.75"
Discharge Size: 6"
Drive Type: Belt
Belt Size: 2B70
Weight (lbs.): 780 lbs.

(820 lbs.)
Wheel Base: 44"
Tire Size: 530-12
Fuel T ank Capacity (gal.): 1.75

(6.6)
Engine: Honda 13hp gasoline

(Honda 20hp gasoline)

Specifications are subject to change due to design modifications.

20

Declaration of Conformity

The undersigned manufacturer:

Crary Industries, Inc.

237 NW 12

P.O. Box 849

West Fargo, ND 58078-0849

Declares that hereunder specified unit:

CHIPPER

Brand: Crary Bear Cat
Type: Engine driven Chipper
Model Number: 73420S

Complies with the requirements of:

Machinery Directive 2006/42/EC

EN 13525:2005-Forestry Machinery-Wood Chippers -Safety

EN ISO 12,100, Part 1-Safety of Machinery-Basic Conce pt s, General Principles for Design

Emission of Gaseous and Particulate Pollutants Directive 2002/88/EC

Noise Emissions Directive 2000/14/EC

-Conformity Assessment Procedure: Annex V
(Use of harmonized standard EN ISO 3744:2010)

Sound Power Level: 86 dB L
Guaranteed Sound Power Level: 103 dB LWA

73420S Serial number X00990 and up
73420S VIN number 5VJAA00197W000009 and up

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

Arlan Mathias Mr. Phillip Wicks
Senior Project Engineer

PA

th

Street

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

Declaration of Conformity

The undersigned manufacturer:

Crary Industries, Inc.

237 NW 12

P.O. Box 849

West Fargo, ND 58078-0849

Declares that hereunder specified unit:

CHIPPER

Brand: Crary Bear Cat
Type: PTO driven Chipper
Model Number: 73454S

Complies with the requirements of:

Machinery Directive 2006/42/EC

EN 13525:2005-Forestry Machinery-Wood Chippers -Safety

EN ISO 12,100, Part 1-Safety of Machinery-Basic Conce pt s, General Principles for Design

Noise Emissions Directive 2000/14/EC

-Conformity Assessment Procedure: Annex V
(Use of harmonized standard EN ISO 3744:2010)

Sound Power Level: 86 dB L
Guaranteed Sound Power Level: 103 dB LWA

73454S Serial number X00062 and up

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

Arlan Mathias Mr. Phillip Wicks
Senior Project Engineer

PA

th

Street

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

HEALTH WARNING

GASOLINE, DIESEL, AND

OTHER PETROLEUM PRODUCTS

Harmful or fatal if swallowed.
Long-term exposure to vapors has caused cancer in
laboratory animals.

• Avoid prolonged breathing of vapors.

• Keep face away from nozzle and gas tank/container
opening.

• Never siphon by mouth.

Failure to use caution may cause serious injury or illness.

WARNING

CHEMICALS KNOWN TO THE STATE OF CALIFOR­NIA TO CAUSE CANCER, BIRTH DEFECTS, OR
OTHER REPRODUCTIVE HARM ARE FOUND IN
GASOLINE, DIESEL, CRUDE OIL, AND MANY OTHER
PETROLEUM PRODUCTS AND THEIR V APORS, OR
RESULT FROM THEIR USE.

Box 849
West Fargo, ND 58078
[phone]
FAX: [phone]
www.crary.com

• [phone]

READ AND FOLLOW LABEL DIRECTIONS AND USE
CARE WHEN HANDLING OR USING ALL PETRO­LEUM PRODUCTS.

ENGINE EXHAUST FROM THIS PRODUCT CON­T AINS CHEMICALS KNOWN TO THE ST A TE OF CALI­FORNIA TO CAUSE CANCER, BIRTH DEFECTS, OR
OTHER REPRODUCTIVE HARM.