Gravely 944 Pro Chip Owner's manual

Owner/Operator Manual
Models
993401 – 993499
944 Pro Chip
09345800B 3/02
Supercedes, A
Printed in USA

i
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
WARNING
ENGLISH
1. Feed Control Bar
2. Hopper
3. Access Cover
4. Clutch Lever
5. Battery
6. Engine Control Panel
7. Fuel Tank
8. Jack
9. Adjustable Hitch
10. Hydraulic Tank
11. Engine and Shroud
12. Chute Deflector
13. Chute
14. Control Lever
15. Weighted Feed Roll Saddle
16. Feed Roller Box
17. Apron Door
18. Chute Rotation Lock
19. Flywheel Lock Pin
20. Housing
21. Frame
C
ONTROLS AND
F
EATURES
Figure 1
1
7
8
5
4
2
9
10
6
3
11
12
13
14
15
16
17 18
19
20 21

3/02 © Copyright 2002 Ariens Company
1
S
ECTION
1: I
NTRODUCTION
Controls and Features....................................................................................................................................................... i
The Manual ......................................................................................................................................................................2
Service and Replacement Parts ......................................................................................................................................2
Product Registration.........................................................................................................................................................2
Dealer Delivery ................................................................................................................................................................2
Disclaimer ........................................................................................................................................................................2
S ECTION 2: S AFETY
Safety Alert Symbol .........................................................................................................................................................3
Signal Words....................................................................................................................................................................3
Practices and Laws ..........................................................................................................................................................3
Required Operator Training ..............................................................................................................................................3
Safety Decals and Locations............................................................................................................................................3
Unit, Operational, Personal, Service and Maintenance Safety Rules ..............................................................................5
S ECTION 3: O PERATION
Pre-Start...........................................................................................................................................................................9
PTO Clutch.......................................................................................................................................................................9
Starting the Chipper .........................................................................................................................................................9
Feeding the Chipper.........................................................................................................................................................9
Unclogging the Chipper .................................................................................................................................................10
Rotation Lock – Discharge.............................................................................................................................................10
Discharge Deflector .......................................................................................................................................................10
Stopping the Chipper .....................................................................................................................................................10
S
ECTION
4: L
UBRICATION AND
M
AINTENANCE
Engine Oil ......................................................................................................................................................................11
Fuel – Diesel ..................................................................................................................................................................11
Cutting Knives ................................................................................................................................................................11
Hydraulics ......................................................................................................................................................................13
Lubrication .....................................................................................................................................................................14
Belts ...............................................................................................................................................................................14
Battery............................................................................................................................................................................15
Wiring Diagram ..............................................................................................................................................................16
Specifications.................................................................................................................................................................16
Warranty................................................................................................................................................Inside Back Cover
OWNER / OPERATOR MANUAL – TABLE OF CONTENTS
All Models
993401 through 993499
P
RO
C
HIP
944 M
ODELS

2
GRAVELY® International 944 Pro Chip
T
HE
M
ANUAL
Before operation of unit, carefully
and completely read your manuals.
The contents will provide you with an
understanding of safety instructions
and controls during normal operation
and maintenance.
All reference to left, right, front, or rear are given from
operator standing in operation position and facing the
direction of forward travel.
S
ERVICE AND
R
EPLACEMENT
P
ARTS
When ordering replacement parts or
making service inquiries, know the
Model and Serial numbers of your unit
and engine.
Numbers are located on the product
registration form in the unit literature
package.They are printed on a serial
number label, located on the frame of
your unit (Figure 2).
• Record Unit Model and Serial numbers here.
• Record Engine and Clutch Model and Serial numbers
here.
P
RODUCT
R
EGISTRATION
A warranty registration card must be filled
out by the GRAVELY dealer, signed, and
returned at time of sale.This form
activates the warranty.The replacement
of any part on this vehicle with anything
other than an GRAVELY authorized replacement part may
adversely affect the performance, durability, or safety of
this unit and may void the warranty. Claims meeting
requirements during limited warranty period will be
honored.To guarantee full warranty service, make sure
your registration card has been returned to GRAVELY.
D
EALER
D
ELIVERY
Dealer should:
1. Check to make sure all Dealer Preparations have
been properly completed.
2. Fill out Original Purchaser Registration Card and
return the card to Ariens Company.
3. Explain GRAVELY Limited Warranty Policy.
4. Explain recommended lubrication and maintenance.
Advise customer on adjustments.
5. Instruct customer on controls and operation of unit.
Discuss and emphasize the Safety Precautions.Give
customer Owner/Operator, Parts, and Engine
Manuals.Advise customer to thoroughly read and
understand them.
D
ISCLAIMER
GRAVELY, a division of Ariens Company is hereinafter
referred to as GRAVELY. GRAVELY reserves the right to
discontinue, make changes to, and add improvements
upon its products at any time without public notice or
obligation.GRAVELY disclaims liability for any claims or
damages, whether regarding property, personal injury or
death arising out of the use of unauthorized replacement
parts.The descriptions and specifications contained in
this manual were in effect at printing. Equipment
described within this manual may not be identified as
either standard or optional. Illustrations may not be
applicable to your unit.
OL1800
OL2160
Transfer
model & serial
number
label from
product
registration
here.
Figure 2
SerialNumber
Label
OC0990
OL1010
SECTION 1: INTRODUCTION

GRAVELY® International 944 Pro Chip
3
E
NGLISH
S
AFETY
A
LERT
S
YMBOL
This is a safety alert symbol. It means:
• ATTENTION!
•YOUR SAFETY IS INVOLVED!
When you see this symbol:
• BECOME ALERT!
• OBEY ITS MESSAGE!
S IGNAL W ORDS
The safety alert symbol is used with the signal words
DANGER, WARNING and CAUTION and colors to
alert you to safety messages.
They are used in safety decals on the unit and with
proper operation and procedures in this manual.They
alert you to the existence and relative degree of hazards.
Understand the safety message.It contains important
information about personal safety on or near the unit.
P
RACTICES AND
L
AWS
Practice usual and customary safe working precautions,
for the benefit of yourself and others. Understand and
follow all safety messages. Be alert to unsafe conditions
and the possibility of minor, moderate, or serious injury or
death. Learn applicable rules and laws in your area.
R
EQUIRED
O
PERATOR
T
RAINING
Original purchaser of this unit was instructed by the seller
on safe and proper operation.If unit is to be used by
someone other than original purchaser;loaned, rented or
sold, ALWAYS provide this manual and any needed
safety training before operation.
S
AFETY
D
ECALS AND
L
OCATIONS
ALWAYS replace missing or damaged Safety Decals.
Refer to Figure 3 for Safety Decal locations.
DANGER
IMMINENTLY HAZARDOUS SITUATION! If not
avoided, WILL RESULT in death or serious injury.
WARNING
POTENTIALLY HAZARDOUS SITUATION! If not
avoided, COULD RESULT in death or serious injury.
CAUTION
POTENTIALLY HAZARDOUS SITUATION! If not
avoided, MAY RESULT in minor or moderate injury.
OL1253
077134
TO PREVENT TIPPING
DURING OPERATION
OR SERVICE:
TRAILER MUST BE
SECURELY SUPPORTED
OR ATTACHED TO
TOWING VEHICLE.
WARNING
077066
DANGER
KEEPHANDS & FEET AWAY
DO NOT OPEN WHILE BLADE
IS ROTATING
ROTATING
BLADE
077594A
STOP ENGINE, ALLOW
FLYWHEEL TO COME TO
A COMPLETE STOP , INSERT
LOCKPIN BEFORE CLEARING
Figure 3a
6
18
2
20
3
2
1
3
8
9
76
17
OC0980
OC0950
SECTION 2: SAFETY

4GRAVELY® International 944 Pro Chip
1. A. Attention!Your safety is
involved!
B. Read Owner/Operator
Manual.
C. Wear adequate face
protection.
D. Wear adequate hearing
protection.
E. Wear adequate head
protection.
F. Wear adequate gloves.
2. A. Attention! your safety is
involved!
B. Read Owner/Operator
Manual.
C. Wait for all moving parts to
stop moving before
servicing.
D. Shut off engine, remove
key, read manual before
you unplug, adjust or repair
unit.
3. A. Attention!Your safety is
involved!
B. Read Owner/Operator
Manual.
4.
A. Attention!Your safety is involved!
B. Read Owner/Operator Manual.
C. Keep people away from unit while operating.
D. Always stand clear of discharge area.
5.
A. Attention!Your safety is involved!
B. Read Owner/Operator Manual.
C. Keep people away from unit while operating.
6. A. DANGER
B. ROTATING BLADE
• Keep hands and feet away
• DO NOT open while blade
is rotating
• Stop engine.Allow
flywheel to come to a
complete stop.Insert
lockpin before clearing.
7.
A. WARNING
B. 1. DO NOT operate this unit without this guard in
place.
2. DO NOT remove this guard while unit is in
operation.
3. Wait for all movement to stop before servicing
this unit.
4. Keep hands, feet and clothing away from power
driven parts.
5. Make certain everyone is clear of machine before
starting engine or operation.
8.
A. CAUTION
B. Be sure safety chain is securely hooked to towing
vehicle.
Be sure jack is all the way up, and swivel wheel
removed if so equipped before transporting.
Do not exceed 45 mph while towing this unit.
Figure 3b
3
13
10
21
24
7
19
5
1
11
16
22
14
15
23
3
12 21
OC0970
OC0960
AB
077137
CD
EF
AB
077140
STOP
CD
AB
077139
AB
077134
CD
ABC
A
B
DANGER
KEEPHANDS & FEET AWAY
DO NOT OPEN WHILE BLADE
IS ROTATING
ROTATING
BLADE
077594A
STOP ENGINE, ALLOW
FLYWHEEL TO COME TO
A COMPLETE STOP, INSERT
LOCKPIN BEFORE CLEARING
A
B
WARNING
1. DO NOT OPERATE THIS UNIT WITHOUT THIS
GUARD IN PLACE.
2. DO NOT REMOVE THIS GUARD WHILE UNIT
IS IN OPERATION.
3. WAIT FORALL MOVEMENT TO STOP
BEFORE SERVICING THIS UNIT.
4. KEEP HANDS, FEET AND CLOTHINGAWAY
FROM POWER DRIVEN PARTS.
5. MAKE CERTAIN EVERYONE IS CLEAR OF
MACHINE BEFORE STARTING ENGINE OR
OPERATION.
077809
A
BBE SURE SAFETY CHAIN IS SECURELY
HOOKED TO TOWING VEHICLE.
CAUTION
BE SURE JACK IS ALL THE WAY UP, AND
SWIVEL WHEEL REMOVED IF SO EQUIPED
BEFORE TRANSPORTING.
DO NOT EXCEED 45 MPH WHILE TOWING THIS
UNIT. 077039

GRAVELY® International 944 Pro Chip 5
9. A. WARNING
B. To prevent tipping during
operation or service: trailer
mustbe securelysupported
or attached to towing
vehicle.
10. A. WARNING
B. Muffler and adjacent areas
may exceed 150°F.
11. Tighten lug bolt before each towing
12.
A. Attention!Your safety is involved!
B. Read Owner/Operator Manual.
C. Allow No Riders.
13. DO NOT touch parts which are hot
from operation.Allow parts to cool
before service.
14.
A. Reverse Feed Rollers (Feed Out)
B. Stop
C. Forward Feed Rollers (Feed In)
D. Feed Control Positions
15.
A. DANGER
B. DO NOT reach beyond this point.
16. A. DANGER
B. Pinch Point
17. A. DANGER
B. Stand clear! High speed
discharge.
18. A. CAUTION
B. Lock Flywheel with shaft
pin before opening or
working on knives.
19.
A. CAUTION
B. Check Clutch Disengagement Before Each Use.If
Clutch Do Not Function Properly, Per Owner’s
Manual, Adjust Or Repair Before Operating Unit.
C. IMPORTANT Do not engage clutch at engine RPM
greater than 1000.
20.
A. CAUTION
B. Check bolt torque on knives before each operation.
See owners manual.
21. A. WARNING
B. Rotating Shafts.
22. A. WARNING
B. To avoid injury while
operating this chipper,
wear: safety goggles,
sturdy protective clothing,
hard hat, ear protection and
work gloves.
23. A. DANGER
B. Rotating Feed Rollers
• Do Not Reach Beyond this
Point
• Do Not Use Hands to
Remove Debris from
Rollers
24. A. WARNING
B. Keep Hands Away
A
BTO PREVENT TIPPING
DURING OPERATION
OR SERVICE:
TRAILER MUST BE
SECURELY SUPPORTED
OR ATTACHED TO
TOWING VEHICLE.
WARNING
077066
A
B
WARNING
MUFFLER &
ADJACENT AREAS
MAY EXCEED 150 F.
TIGHTEN LUG
BOLT BEFORE
EACH TOWING
ABC
078432
ABCBD
A
B
DANGER
DO NOT REACH BEYOND THIS POINT
077596
A
BPINCH
POINT
DANGER
077604A
DANGER
STAND CLEAR!
HIGH SPEED DISCHARGE
077923A
A
B
A
B
CAUTION
LOCK FLYWHEEL WITH
SHAFT PIN BEFORE
OPENING OR WORKING
ON KNIVES
077925A
A
B
C
A
BCHECK BOLT TORQUE
ON KNIVES BEFORE
EACH OPERATION
SEEOWNERS MANUAL
CAUTION
077593A
A
B
WARNING
ROTATING
SHAFTS
A
B
WARNING
TO AVOID INJURY WHILE OPER-
ATING THIS CHIPPER, WEAR:
SAFETY GOGGLES, STURDY
PROTECTIVE CLOTHING, HARD
HAT, EAR PROTECTION AND
WORK GLOVES. 077067
A
B
DANGER
ROTATING
FEED ROLLERS
•
DO NOT REACH BEYOND
THIS POINT
•
DO NOT USE HANDS
TO REMOVE DEBRIS
FROM ROLLERS
077595
A
B
KEEP HANDS AWAY
WARNING
077597

6GRAVELY® International 944 Pro Chip
PERSONAL SAFETY
Responsible Operators
• Only trained adults may operate unit
• Training includes actual operation
• Clearly understand instructions
• Be alert! Conditions can change
NEVER operate unit after or during the
use of medication, drugs or alcohol.
Safe operation requires your complete
and unimpaired attention at all times.
NEVER allow anyone to operate this
unit when their alertness or
coordination is impaired.
Clothing and Safety Gear
Wear adequate safety gear, protective
gloves and footwear.
Protect eyes, face and head from
objects that may be thrown from unit.
Wear appropriate hearing protection
and clothing with long sleeves.
DO NOT wear loose clothing or jewelry
and tie back hair that may get caught in
rotating parts. Keep all guards in place.
NEVER wear open sandals or canvas
shoes during operation.
Avoid Sharp Edges
Sharp edges can cut. Momentum from
any movement of flywheel is enough to
cut off a finger or hand.Wrap blade(s),
wear gloves and use extreme caution
when servicing.
Avoid Entanglement
NEVER place your hands or any part of
your body or clothing inside or near any
moving part while unit is running. Keep
all guards in place.Keep all guards in
place.
ALWAYS disengage Clutch lever, stop
unit and engine, remove key and wait
for all moving parts to stop before
making any inspections, repairs, etc.
Avoid Pinch Points
ALWAYS keep hands away from all
pinch points.
Exhaust Fumes
Fumes from engine exhaust can cause
injury or death.
DO NOT run engine in an enclosed
area. Always provide good ventilation
and wait until hazard has been
removed.
Explosive Fuel
Fuel is highly flammable and its vapors
are explosive.Handle with care.Use an
approved fuel container.
No smoking, No sparks, No flames.
ALWAYS allow engine to cool before
servicing.
NEVER fill fuel tank when engine is
running or hot from operation.
NEVER fill or drain fuel tank indoors.
Replace fuel cap securely and clean up
spilled fuel.
Visual Obstruction
Dust, smoke, fog, etc. can reduce
vision and cause an accident. Operate
unit only when there is good visibility
and light.
OPERATIONAL SAFETY
Rules of Operation
KNOW your Unit – before starting
engine. Understand:
• How to operate all controls
• The functions of all controls
• How to STOP in an Emergency
• Speed ranges
Walk Around Inspection
Complete a walk around inspection of
unit and work area to understand:
• Work area
• Your unit
• All safety decals
OL0090
R
X
OL1060
OL0670
OL0980
OL0930
OL0270
STOP
OL0863
OL0291
OL0070
OL0920
❄
OL1410
OL0340
OL0810
OL0040

GRAVELY® International 944 Pro Chip 7
Work Area
Avoid slippery surfaces.ALWAYS be
sure of your footing.
Check for weak spots on dock, ramps
or floors.Avoid uneven work areas and
rough terrain.
Keep area of operation clear of all toys,
pets, and debris.Thrown objects can
cause injury.
Keep children and people away.
Keep children out of work area and
under watchful care of a responsible
adult.
Hazardous Slopes
DO NOT operate on steep slopes.
DO NOT operate on slopes of more
than 10°.
Unit Roll-Away
DO NOT park unit on a slope unless
absolutely necessary.When parking on
a slope always chock or block the
wheels.ALWAYS set parking brake of
towing vehicle.
DO NOT operate near drop offs,
ditches, or embankments. Unit can
suddenly turn over if a wheel is over the
edge of a cliff or ditch, or if an edge
caves in.
Clearances
ALWAYS check overhead and side
clearances carefully before operation.
ALWAYS be aware of traffic when
operating along streets or curbs.Set up
safety signs and/or flags.
Thrown Objects
Deflected materials can cause injury
and property damage. DO NOT point
discharge at anyone or discharge
directly onto paved or gravel surfaces.
Always stand clear of the discharge
area when operating this unit.
ALWAYS position discharge chute and
deflector in safe direction and angle
before starting engine.It is the
responsibility of the operator to provide
a safe, secure area or containment of
materials being discharged.
DO NOT allow an accumulation of
processed material to build up in
discharge area; this will prevent proper
discharge and can result in kickback
from feed opening.
Unit Support
DO NOT operate unless:
• Unit is securely attached to towing
vehicle or
• Wheels are chocked and Jack Stand
is lowered, frame leveled and
secured.
Child Safety
NEVER allow children to operate, play
on or near unit.
Be alert and turn unit off if children
enter area.
ALLOW NO RIDERS
ALWAYS keep batteries out of reach of
children.
FeedingWood into Unit
Chipper is designed for wood only. DO
NOT attempt to feed anything else into
chipper.Personal injury and/or damage
to the machine could result.
Keep face and body back from feed
opening to avoid injury from bounce
back of material.
DO NOT overreach.Keep proper
balance and footing at all times.
ALWAYS stand to side of Feed Hopper.
Material being chipped can rotate and
whip around violently in Feed Hopper.
When feeding material into unit, be
extremely careful that pieces of metal,
rocks, bottles, cans or other foreign
objects are not included. Personal
injury or damage to unit could result.
Multiple Operators
ALWAYS be continually alert to
whereabouts and actions of all
operators involved.
OL0170
OL1021
OL1351
OL0910
OL1390
OL1310

8GRAVELY® International 944 Pro Chip
Only one operator at a time can feed
materials into Feed Hopper.
ALWAYS make sure other operators
are at safe distance and to the side of
Feed Hopper.
ALWAYS use extreme caution when
handling materials to be chipped so
other operators are not entangled.
Unclogging the Unit
ALWAYS disengage PTO clutch, shut
off engine, remove key, wait for moving
parts to stop and install Flywheel Lock
Pin before clearing debris.
Parking
Never leave a running unit unattended.
ALWAYS shut off engine before leaving
unit.
ALWAYS remove key to prevent
unauthorized use.
ALWAYS position and lock discharge
chute in the straight forward position
and put feed apron in the up and
latched position.
Chock wheels if not attached to towing
vehicle
Transport
Obey all local, state and federal laws
when towing unit.
DO NOT transport machine while
engine is running.
ALWAYS make sure unit is securely
attached to towing vehicle and that
safety chains are properly connected.
ALWAYS make sure Jack Stand is
raised and locked.
ALWAYS position and lock Discharge
Chute in the straight forward position
and put Feed Apron in the up and
latched position.
SERVICE SAFETY
Explosive Gases!
Poisonous battery fluid contains
sulfuric acid and its contact with skin,
eyes, or clothing can cause severe
burns.
No flames, No sparks, No smoking
near battery. ALWAYS wear safety
glasses and protective gear near
battery.
Speed
DO NOT operate at too fast a rate.DO
NOT change engine governor settings
or over speed engine. Governor
controls maximum safe operating
speeds and protects engine and all
moving parts from damage.Authorized
service personnel should perform
adjustments if problems persist.
AbnormalVibrations,
Foreign Objects
If the cutting mechanisms strikes any
foreign object or if your unit makes
unusual noises or vibrations:
ALWAYS disengage PTO, stop unit and
engine, remove key and allow moving
parts to stop.Install Flywheel Lock Pin.
Follow these steps:
1. Inspect for damage.
2. Replace or repair damaged parts.
3. Check for and tighten loose parts.
UNIT SAFETY
Covers
ALWAYS assure protective structures,
guards, shields, screens and panels
are in good repair, in place and
securely fastened. Check their
operation regularly.
Safety Interlock System
Check Safety Interlock System for
proper operation daily (see Operation
section).
Components
NEVER remove or modify any safety
components on the unit. Check for
proper operation regularly.
DO NOT touch unit parts which might
be hot from operation.Allow parts to
cool before attempting to maintain,
adjust or service.
Replace damaged, missing or
weakened components.Keep all nuts
and bolts, especially knife attachment
bolts, tight.Always keep unit in good
condition.
Modification/Adjustments
NEVER modify, alter or permit anyone
to modify or alter the unit or its
components.
DO NOT make any adjustments to unit
while engine is running except where
specifically recommended.
STOP
OL00863
OL0360
+
-
OL2750
OL2090
OL1031
STOP
OL00863
OL0980
OL1253
OL0100

GRAVELY® International 944 Pro Chip 9
PRE-START
Before starting unit:
1. Position unit on a level surface and in safe and proper
work area.To prevent tipping, unit must be securely
attached to the towing vehicle or stabilized with front
jack, wheel chocks and rear blocking when feeding.
2. Check that engine oil, fuel, and antifreeze are at
proper levels (see General Maintenance Section).
3. Check that engine is clear of debris and other
accumulations.
4. Check that Hydraulic Tank is properly filled.
IMPORTANT:The Hydraulic Tank must be filled before
starting engine or the hydraulic pump will be damaged.
(Pumps damaged by running dry void warranty.)
5. Insure all hardware is tight, all safety devices are in
place and all adjustments correct (see General
Maintenance Section).
6. Position Discharge Chute and Deflector in safe
direction and angle.
7. Check that the Feed Hopper is completely clear and
all guards and covers are in place and secure.
8. Check to see that Safety Interlock System is
operating correctly.
SAFETY INTERLOCK SYSTEM
Chipper is equipped with two safety switches that will
prevent engine cranking or will shut off engine when
Feed Roller Box is opened and/or knife access cover is
removed.
ENGINE FUEL
STANDARD CONTROLS
See Figure 1 for Control Locations.
Engine Control Panel
See Figure 4.
Tachmometer/Hour meter
Refer to the pointer for all engine speed readings.Engine
speed varies with throttle setting and engine load.
The hourmeter records time that the ignition switch is
turned on.
Coolant temperature gauge
This gauge indicates temperature of the engine coolant.
It also serves as the switch which trips the relay for
automatic shut-down when coolant temperature reaches
the high set point.
Oil pressure gauge
This gauge indicates pressure of the engine lubricating
oil. It also serves as the switch which trips the relay for
automatic shut-down when oil pressure reaches the low
set point.
Heater indicator light
This light illuminates green after the preheat activate
switch has been held in the activate position long enough
for the manifold heater to heat incoming air adequately
for cold temperature starting.
Alternator indicator light
This light illuminates red after the ignition switch has
been turned on and when the alternator is not producting
battery charging current.
Shut-down relay override switch
This switch must be depressed for starting.See starting
instructions.The shut-down relay protects the engine by
shutting it down automatically if coolant temperature is
too hight for adequate engine cooling and/or if oil
pressure is too low for adequate lubrication.
CAUTION
IMPROPER OPERATION may result in injury and/or
damage to unit.ALWAYS inspect unit and know how to
operate unit properly. Insure all hardware is tight, all
safety devices are in place and all adjustments correct.
WARNING
THROWN OBJECTS can result in
personal injury and/or property damage.
ALWAYS discharge in a safe direction.
WARNING
FAILURE OF INTERLOCK together with IMPROPER
OPERATION of unit can result in serious injury or
death. ALWAYS insure Safety Interlock System is
operating properly.
WARNING
EXPLOSIVEVAPORS and
FLAMMABLE FUEL can result in serious
injury or death. Handle fuel with care.
ALWAYS use an approved (RED) fuel
container.
No Smoking!
No Lighted Materials!
No Open Flame!
Allow engine to cool.
SECTION 3: OPERATION

10 GRAVELY® International 944 Pro Chip
Pre-heat activate switch
This switch activates the air intake manifold heater when
pushed in the direction of the arrow. It is used only for
cold temperature starting of the engine.
Ignition Switch
The ignition switch is operated with removable key.
“OFF” Position: Ignition system is shut down.
“RUN” Position: All controls are operable.
“START” Position: Starter turns over engine.
Throttle
The Throttle is operated by turning the knob
counterclockwise to increase engine RPM and clockwise
to decrease engine RPM (see Figure 3).
Feed Control Bar
Chipper is fed by two hydraulic Feed Rollers.
Rollers are controlled by the Feed Control
Bar located around outer edge of Feed
Hopper.The Bar has four positions:
1. Reverse (Feed Out)
2. Stop
3. Forward (Feed In)
4. Stop
Flywheel Lock Pin
The Flywheel Lock Pin is used to prevent Flywheel from
turning during inspection, maintenance, or cleaning.
To engage:
1. Remove Knife Access Covers.
2. Reach through access opening and slowly, carefully
(using the Impeller side of the Flywheel) rotate
Flywheel until Cutter Knife is aligned with opening.
3. When properly aligned, Flywheel Lock Pin should
spring into hole in the Flywheel (see Figure 5).
Discharge Lock Pin
See Figure 6.
To change direction of Discharge Chute:
1. Pull and rotate Lock Pin down and right, forcing Pin
to lower and disengage from Chute Index Plate.
2. Rotate Discharge Chute until it points in desired
direction.
3. Turn Lock Pin to left, releasing spring tension and
allowing Pin to securely lock into Chute Index Plate.
00000
Fast Slow
START
OFF
RUN
HEATER ALT.
SHUT DOWN
RELAY
PRE-HEAT
1. Engine Control Panel
2. Tach-O-Meter/
Hour Meter
3. Water Temp. Gauge
4. Oil Pressure Gauge
5. Heater Indicator Light
6. Alternator Indicator
Light
7. Shut-down relay
override switch
8. Ignition Switch
9. Throttle
10.Preheat Activate Switch
Figure 4
Fast Slow
15
3
7
9
8
2
4
OC0880
6
10
WARNING
SHARP EDGES can cut.Momentum from
any movement of flywheel is enough to cut
off a finger or hand.Wrap blade(s), wear
gloves and use extreme caution when
servicing.
WARNING
THROWN OBJECTS can result in serious
injury and/or property damage. DO NOT
change discharge direction while engine is
running and/or flywheel is rotating.
ALWAYS discharge in a safe direction.
OC0210

GRAVELY® International 944 Pro Chip 11
Chute Deflector
The Chute Deflector is controlled by the Deflector Index
Plate on the side of the Discharge Chute.To change
angle of Deflector (see Figure 7):
1. Pull out Eyebolt on Control Lever and position Chute
Deflector at desired angle.
2. Once in position, release Eyebolt and allow Eyebolt
to engage Deflector Index Plate.
Air Filter
Do not operate engine if air cleaner is removed.Removal
of such parts could create a fire hazard.
DO NOT use flammable solutions to clean Air Filter.
CONTROLS AND FEATURES
PTO Clutch Lever
These models have over-center detented-type clutch.
The PTO Clutch is:
Engaged by pulling Clutch Lever
towards Engine Shroud front.
Disengaged by pushing Lever toward
Flywheel Housing.
IMPORTANT: Failure to keep clutch adjusted in
accordance with manufacturer’s instructions will void
warranty on entire clutch assembly. Refer to Clutch
Manual for information on clutch adjustment.
1. Flywheel Lock Pin
2. Cutter Knife
3. Locked Position
4. Flywheel
5. Impeller
Figure 5
1
2
3
4
5
OC0870
1. Discharge Chute
2. Lock Pin 3. Chute Index Plate
Figure 6
1
2
3
OC0860
Figure 7
1
2
3
4
OC0800
1. Discharge Chute
2. Eyebolt 3. Control Lever 4. Deflector Index Plate
OC0260
OC0250

12 GRAVELY® International 944 Pro Chip
STARTING AND SHUT-OFF
See Figures 1 and 4 for all controls and features
locations.
Starting
1. Adjust throttle to 1/4 open.
2. Push shut-down relay override switch and turn
ignition key to “S” position to engage starter motor.
Allow key to return to the “R” position as soon as
engine starts.
3. Keep shut-down relay override switch depressed for
approximately 10 seconds or until oil pressure comes
up.
NOTE: Murphy Tattletale Button will normally remain
depressed while engine is running.
If engine fails to start, repeat previous steps twice. If
engine still fails to start, refer to Engine Manual. Refer to
Engine Manual for cold weather starting instructions.
4. Adjust Throttle to engine speed of 1,000 RPM before
engaging PTO Clutch.
5. Bump (quickly engage/disengage) Clutch to start
Flywheel spinning.
6. Build up Flywheel speed by bumping Clutch 4 to 5
more times.
7. When Flywheel is up to speed, engage Clutch fully.
IMPORTANT: Excessive loading will stall engine;
engaging too slowly will cause Clutch slip and premature
wear. See Clutch Manual.
8. Once engaged, run engine at wide open throttle.See
specifications for fast idle speed for your engine
model.
Shut-Off
1. Reduce engine RPM to 1200 – 1500.
2. Disengage PTO Clutch.
3. Turn ignition switch to “OFF” and remove key.
4. Wait for all moving parts to stop.
OPERATION
Engine should be run at wide open throttle during normal
operation.Do not idle at less than 1500 RPM without
disengaging clutch. Disengage clutch for all transport
operations.
See Figures 1 and 4 for all controls and features
locations.
Feeding the Chipper
Unit may be equipped with an electronic autofeed which
automatically slows Feed Rollers as engine speed
decreases.During normal operation, Feed Rollers should
stop at engine RPM below 1500.
If not equipped with autofeed, it is important when
feeding large diameter or long limbs, for the operator to
remain close to Feed Control Bar so that Feed Rollers
may be stopped if engine does not have enough power to
chip complete limb.
ALWAYS stand to side of Feed Hopper when feeding
limbs to avoid being entangled by branches. Material
being chipped can rotate and whip around violently in the
Feed Hopper.
Learn the capacity of your chipper; limbs should be
trimmed with chipper capacity in mind.
CAUTION
Read entire Owner/Operator Manual,
Clutch Manual, and Engine Manual first.
DO NOT attempt to start you engine at
this time.
WARNING
ABNORMALVIBRATIONS are a warning
of trouble.Immediately disengage PTO
Clutch, stop engine, remove key, and allow
all moving parts to stop.Inspect unit and
make any necessary repairs before
restarting.
STOP
WARNING
ROTATING PARTS can result in serious
injury or death. DO NOT put hands or feet
near or under rotating parts. DO NOT
wear loose clothing or scarves that may
get caught in rotating parts.
SLIPPERY SURFACES can result in
serious injury or death. Use caution and
wear proper footwear to improve footing
on slippery surfaces.
THROWN OBJECTS can result in serious
injury or death.Wear safety goggles to
protect eyes.
DO NOT allow anyone in front of unit while
it is in operation.Be familiar with area of
operation.
CAUTION
HIDDEN HAZARDS may result in injury
and/or damage to unit.Stay alert for holes,
rocks, roots, etc.in area of operation.
WARNING
THROWN OBJECTS can result in serious
injury or death. ALWAYS discharge
deflector in a safe direction and angle.
DO NOT change discharge direction while
chipper is running.

GRAVELY® International 944 Pro Chip 13
If Feed Rollers become jammed, reverse Rollers until the
obstruction is cleared. Feed material only when Feed
Rollers operate properly.
If short pieces or brushy material will not feed into the
Rollers, use the next limb to force feed.
IMPORTANT: Damage to unit will result if material is fed
into Hopper when engine is off and Flywheel is spinning
(coasting) down.
Unclogging the Chipper
If chipper clogs follow these steps (Figure 8):
1. Immediately disengage PTO clutch.
2. Stop engine, remove key, and wait for moving parts
to stop.
3. Remove Knife Access Covers and engage Flywheel
Lock Pin (see Standard Controls).
4. If discharge chute is clogged, remove the right rear
clamp holding discharge chute in place.Once it is
removed, discharge chute can be slipped out of
position.
5. Remove any chips (DO NOT use hands) that may be
lodged in Discharge Chute and/or Flywheel Housing.
6. Through the discharge opening, scrape any chips
that are lodged around the cutter disc inside the
chipper housing.
7. Once chips are removed, reposition and secure
Discharge Chute and Knife Access Covers.
DANGER
ROTATING PARTS will cause serious
injury or death.
NEVER reach into Feed Hopper to work in
close proximity of Feed Rollers.
DANGER
Twigs and chips created by the feed rollers pulling the
limbs, will drop in the compartment below the lower
feed roller.This compartment may need cleaning from
time to time.Shut off engine, remove key and wait for
flywheel to stop prior to removing access cover.
Remove access cover and install flywheel lock pin.
NEVER open the door or reach around the rollers
when engine is running. Failure to shut off engine
could allow accidnetal engagement of feed rollers
cutting off fingers or hands.
Valve Lever
Figure 8 OC0820
Valve Lever Lock
1. Discharge Chute
2. Rear Right Clamp
3. Discharge Lock Pin
4. Knife Access Cover
5. Clogged Area
Figure 9
1
2
3
4
5
OC0181

14 GRAVELY® International 944 Pro Chip
Flow Control Valve
The flow control valve, located on the side of the hopper,
contols the speed of the feed rollers (Figure 9). Roller
speed can be adjusted from zero (rollers nearly stopped)
to ten (full speed). If autofeed is installed, adjustment will
normally be at or near full speed.
To adjust fee roller speed:
• Loosen valve lever lock
• Position valve lever to desired speed
• Tichgen valve lever lock.
When feeding larger wood, slow feed rollers to reduce
stress on unit and to help prevent clogging.
Speed
The engine governor settings on your machine must not
be altered, changed, or tampered with.The governor
controls the maximum safe operating speeds and
protects the engine and all moving parts from damage
caused by over-speed.If problems exist, contact
authorized service personnel.
TOWING
Engine clutch must be disengaged and engine shut off
for towing.Apron must be closed, discharge chute must
be rotated forward and lock pin engaged for road travel.
Do not have flywheel lock pin engaged.
Some models are equipped with electric brakes and
require an appropriate controller on the towing vehicle. A
separate controller accessory is available from your
dealer if there is none on your towing vehicle.
PARKING
ALWAYS take all possible precautions when leaving
equipment unattended to avoid injury.
WARNING
OVER-SPEED can result in serious injury
and/or damage to the unit.
DO NOT operate at too fast a rate.
WARNING
MACHINE ROLL AWAY can result in
injury or death. ALWAYS chock wheels
and lower jack stand or engage parking
brake on towing vehicle when leaving unit
unattended.
NEVER leave a running unit unattended.
ALWAYS remove key to prevent
unauthorized use.

GRAVELY® International 944 Pro Chip 15
E
NGLISH
GRAVELY Dealers will provide any service which may be
required to keep your unit operating at peak efficiency.
Should engine service be required, it can be obtained
from a GRAVELY Dealer or an authorized engine
manufacturer’s service center.
SERVICE POSITION
Make sure unit is securely attached to towing vehicle or
wheels are blocked and Front and Rear Jack Stands are
lowered and secured.
To service engine, open engine access panels.
ENGINE COOLING
Correct maintenance can increase the life of the engine.
See Engine Manual for information on operation and
maintenance of engine.
Each day before operation or every 12 hours (more often
if conditions require) check the following:
1. Check level of oil in engine. Never operate engine
when oil level is below the add mark.Use oil viscosity
based on the expected air temperature range during
the period between oil changes.Refer to Engine
Manual for specific type.
2. Check air cleaner element.Dirt can decrease the
flow of air to the engine.
3. Check air cooling system on the engine.Debris can
decrease the flow of air cooling the engine.
FUEL TANK
Add fuel to Fuel Tank as needed. See your Engine
Manual for correct type and grade of fuel.To add fuel:
1. Put unit in an open area.
2. Stop unit and allow engine to cool.
3. Clean fuel cap and area around fuel cap to prevent
dirt from entering Fuel Tank. Remove cap from Fuel
Tank.
4. Fill Fuel Tank. Use care, do not spill fuel.
5. Replace cap on Fuel Tank and tighten.
6. ALWAYS clean up any spilled fuel before starting
engine.
Diesel - Use only good quality ASTM NO. 2-0 or NO. 2-D
Climatized Diesel Fuel.
CUTTING KNIVES
Inspection
Cutting knives should be kept sharp and inspected daily -
bed knives must also be sharp and should be inspected
weekly. (See "Cutting Knives" this section).
1. Remove the engine ignition key.
2. Disengage the PTO clutch.
3. Wait for all motion to stop.
4. Remove the access cover on the right side of the
chipper housing.
5. Reaching through the access opening, carefully grip
the outer edge of wheel and rotate the cutter disk
until the knife is aligned with the opening.
6. Lock flywheel with lock pin during inspection
WARNING
MOVING PARTS can result in serious
injury or death.
ALWAYS stop unit, remove key, and wait
for moving parts to stop before attempting
any maintenance procedures.
ELECTRIC SHOCK can result in serious
injury or death and/or damage to
equipment.
DO NOT remove wire from spark plug
while engine is running.
CAUTION
HOT SURFACES may result in injury. DO
NOT touch engine or drive parts which are
hot from operation.Allow parts to cool
before servicing.
WARNING
EXPLOSIVE VAPORS and FLAMMABLE
FUEL can result in serious injury or death.
Handle fuel with care.ALWAYS use an
approved (RED) fuel container.
No Smoking!
No Lighted Materials!
No Open Flame!
Allow engine to cool.
DANGER
Be very careful of hand placement. Keep hands away
from knife and fan blade.The cutter disc is very heavy
and the momentum from any movement would be
enough to cut off a finger or hand.
SECTION 4: GENERAL MAINTENANCE

16 GRAVELY® International 944 Pro Chip
NOTE: In checking knife sharpness, you should be able
to feel the sharp leading edge.If it is worn to more then a
1/32 radius, it needs to be resharpened. A chipped or
jagged edge will not effect performance as long as
leading edge is sharp. See sharpening instructions on
page 13.
Bed Knife
1. Remove the three roller housing bolts and swing
hopper and housing to the left.
2. The bed knife is now fully exposed and can easily be
inspected. If the cutting edge has worn to more than
a 1/16 radius, reverse knife or resharpen. See figure
7 and sharpening instructions on page 13.
NOTE: At each weekly inspection, the knife clearance
should also be checked. (See "Bed Knife Adjustment"
section).
Knife Replacement
When knives need to be replaced, use the following
procedure:
1. Remove the engine ignition key.
2. Remove the knife access cover on the right side of
the chipper housing.
3. Carefully rotate the flywheel until knives are located
in the access area.
4. Engage the flywheel lock pin into the hole in the
flywheel by rotating until it enters the access
opening. See figure 5.
5. Remove the three bolts on the right side of feed roller
box. Note the position of the longer bolt in the top
hole, this activates the safety switch. Swing the
hopper assembly to the side.
6. Loosen the bed knife bolts and back away the bed
knife to allow for clearance of additional metal on a
new set of cutter knives.
7. The cutter knifes are held in place by 5 - 1/2" flat
allen head bolts.To remove the knife, hold the bolts
with an allen wrench while removing the lock nuts on
the back side of flywheel.
8. Handle the knives carefully, they are heavy and are
capable of cutting a hand.
9. Remove any dirt or burrs where the knife is seated on
the flywheel.When the new knife is inserted, the
surface must be perfectly clean to give proper knife
“seating”.
IMPORTANT
10. Install new knife set.Tighten center knife bolt first,
then the next two bolts, and last the outer two knife
bolts. For final tightening, use a torque wrench and
tighten bolts and lock nuts to 90 ft. lbs.
11. Readjust and gap the bed knife, and retighten all the
attaching bolts.(See “Bed Knife Adjustment”
section.)
12. Close hopper assembly, insert bolts in proper
positions.Replace access cover and hardware.
13. Test run the chipper at this point. Run slowly at first,
gradually increasing the speed, constantly listening
for any unusual noises.If everything is satisfactory,
your knife replacement is complete.
Bed Knife/Adjustment – Replacement
CAUTION
It takes several minutes for the flywheel to stop rotating
after the engine is shut down.Do not feed material,
attempt maintenance, or repair during this time.
1
34
Figure 10
1. Feedroll Housing
2. Access Cover Removed
3. Bedknife and Support
4. Flywheel Lock Pin
5. Cutter Knife
2
5
OC0940
CAUTION
Proceed with steps 7-10 for each cutter knife separetly.
Flywheel will be unbalanced if rotated with one knife
removed.
DANGER
Extreme caution must be taken when adjusting bed
knives - you will be accessing the knife area.When
moving the flywheel to check the knife clearance, the
momentum of this heavy wheel could cause severe
injury or loss of fingers if not careful.There is no
reason to be touching any part of the knives during
this operation.

GRAVELY® International 944 Pro Chip 17
To adjust the bed knife:
1. The feed roller housing is hinged on its left side.
Remove the three attaching bolts on the right side
and rotate it out of the way.
2. With the right hand – thru the access door, grip outer
edge,slowly move the flywheel so that a knife passes
the bed knife.With the left hand, using the long
handled feeler gauge furnished with the unit, check
the clearance between the knife and the bed knife.To
get a correct reading, be sure the gauge is placed at
the point where the 2 knives are crossing each other.
If setting is correct, you will feel a slight pressure on
the gauge.Check clearance the full width of the knife.
(Feeler gauge thickness and correct clearance is
0.060).
3. To adjust, first loosen the 2 lock bolts under each end
of the bed knife support. Next loosen the 3/8" locking
bolt in the center of the larger concentric adjusting
bolt. Now using both a 9/16" and 1 1/8" wrench,
move the 2 bolts in conjunction with one another to
give desired knife movement and clearance.When
complete torque the 3/8" bolts to 25 ft/lbs.The 4 lock
bolts (2 each end) under the bed knife support must
be torqued to 60 ft/lbs.
4. Rotate flywheel several times and check to make
sure that both knives have approximately the same
setting.
5. Rotate the feed roller housing back into position and
secure with three bolts.
NOTE:The top attaching bolt extends through the
housing side and actuates a safety switch.The engine
will not start until this switch is actuated.
Testing Knife Setting
Anytime a knife setting has been made and completed,
start engine and engage flywheel very slowly. Listen for
any interference.Gradually increase engine and flywheel
speed to full RPM's.After running for two minutes - shut
off engine - let flywheel come to a complete stop and
make one final clearance check with feeler gauge.
Recheck tightness of all bolts.
Knife Sharpening
Knives cannot be sharpened free-hand, but must be
parallel ground by machine. Return knives to Gravely or
take to a qualified grinder. Knives must be ground and
kept as a “matched set.” Knives that are not of equal
length, width and thickness can cause imbalance and
severe damage.When knives have been reground to
where 1/4" of material has been removed, they must be
replaced with a new set.It is very important to use only
Gravely original equipment knives.Although other knives
may fit, special angles unique to the Model 395 are of
great importance to ensure performance and safety.
Cutter knifes should be ground on the leading edge
parallel to mount surface. Bed knife should be ground
at 37°angle on leading edge.
Feed Roller
In time the roller blades will become worn, causing the
loss of gripping power to pull limbs into the chipper –
Inspect regularly.When worn, sharpen each blade by
using a small air grinder. See figure 9.
Grind only enough to sharpen the leading edge of the
roller blades (do not grind off excessive metal).These
blades can be sharpened many times.When they are
ground excessively where the two rollers no longer come
together and the pulling power is lost, rollers must be
replaced.
HYDRAULICS
Hydraulic Filter
The hydraulic filter should be replaced after each 100
hours of operation.
HydraulicTank/Fluid
Check the level in the hydraulic oil tank.The tank must be
filled before starting the engine or the hydraulic pump will
be damaged. Fill with SAE 10W-30 motor oil.Tank
1
34
Figure 11
1. Feeler Gauge
2. Cutter Knives
3. Lock Bolts (Both Ends)
4. Knife Support
5. Bed Knife
6. Knife Bolts
7. Adjustment Lock Bolt
8. Adjustment Bolt
2
56
7
8
OC0910
7
8
DANGER
When sharpening roller blades, be sure engine is shut
off to prevent accidental engagement and roller
rotation. Engage roller control valve and use a pry bar
to rotate roller by hand.KEEP fingers and hands clear.
WARNING
DO NOT use hands to inspect for hydraulic oil leaks.
High pressure oil can pierce skin and cause severe
injury.

18 GRAVELY® International 944 Pro Chip
capacity is 10 gallons.The level should be approximately
2 inches from the top to the tank. (Damaged pumps
caused by running dry are not under warranty.)
LUBRICATION
IMPORTANT:The recommended intervals are based on
normal conditions. Severe or unusual conditions may
require shorter intervals.
Clean grease fittings before lubricating. Replace lost or
broken fittings immediately.
Extreme Pressure Grease
Be sure to use a quality SAE Multipurpose EP Grease
when servicing your equipment.
Bearings
The following bearings should be greased every ten
hours: upper feed roller – one bearing right side; lower
feed roller – one bearing right side;cutter disc shaft – one
bearing on each side of chipper housing. See figure 9.
Feed Roller Slide
The upper feed roller moves in a slide that is lined on
both sides with a Teflon bearing material. Periodically
check slide and replaceTeflon if worn. Grease inside of
slide weekly by brushing grease in slide.Two grease
zerks located on the right side of feedroll box, on the pivot
pins should be greased every 100 hours of service.See
figure 9.
PTO Clutch
The PTO clutch contains five grease zerks that need
periodic greasing. Also frequent engagment pressure
adjustments are necessary. Refer to clutch manual for
proper maintenance.
BELTS
Proper belt tension is obtained when the belt will deflect
5/32 of an inh for a 10 Lb force.At the time of adjusting
belts also check pulley alignment.
To adjust the main drive belt:
1. Loosen the hinge bolts on the right side of the engine
frame.
2. There are two bolts on the left side of the engine
frame that move in slots in the locating flanges on the
trailer. Loosen these and apply downward pressure
until correct belt tension is achieved.
3. Retighten all bolts.
Hydraulic Pump
The hydraulic pump is driven by a belt and pulley.The
belt should be checked for proper tension when adjusting
chipper drive belts.
CAUTION
DO NOT clean, lubricate, or adjust machine while it is
running.
13
4
Figure 12
1. Slide
2. Upper Feed Roll 3. Lower Feed Roll 4. Grinder
2
OC0890
WARNING
MOVING PARTS can cut or amputate
body parts
ALWAYS wait for moving parts to stop
before performing maintenance or service.
CAUTION
Remove ignition key, allow engine to cool, and all parts
to stop rotating before proceeding.
Increase
Tension
Decrease
Tension
1
34
Figure 13
1. Drive Belt
2. Hinge Bolt 3. Engine Base 4. Adjustment Bolts
2
OC0920
Decrease
Tension
Increase
Tension