Woods RM990-3 User manual

OPERATOR'S MANUAL
REARMOUNT
MOWERS
20944
(Rev. 1/21/2010)
Tested. Proven. Unbeatable.
RM990-3
P990-3

2 Introduction
Gen’l (Rev. 2/19/2008)
TO THE DEALER:
Assembly and proper installation of this product is the responsibility of the Woods®dealer. Read manual instructions
and safety rules. Make sure all items on the Dealer’s Pre-Delivery and Delivery Check Lists in the Operator’s Manual
are completed before releasing equipment to the owner.
The dealer must complete the Product Registration online at the Woods Dealer Website or complete the mail-in
form included with the Operator’s Manual. If using the mail-in form, the dealer is to return the prepaid postage portion to
Woods, give one copy to the customer, and retain one copy. Failure to register the product does not diminish
customer’s warranty rights.
TO THE OWNER:
Read this manual before operating your Woods equipment. The information presented will prepare you to do abetter and
safer job. Keep this manual handy for ready reference. Require all operators to read this manual carefully and become
acquainted with all adjustment and operating procedures before attempting to operate. Replacement manuals can be
obtained from your dealer. To locate your nearest dealer, check the Dealer Locator at www.WoodsEquipment.com, or in
the United States and Canada call 1-800-319-6637.
The equipment you have purchased has been carefully engineered and manufactured to provide dependable and
satisfactory use. Like all mechanical products, it will require cleaning and upkeep. Lubricate the unit as specified.
Observe all safety information in this manual and safety decals on the equipment.
For service, your authorized Woods dealer has trained mechanics, genuine Woods service parts, and the necessary
tools and equipment to handle all your needs.
Use only genuine Woods service parts. Substitute parts will void the warranty and may not meet standards required for
safe and satisfactory operation. Record the model number and serial number of your equipment in the spaces
provided:
Model:_______________________________ Date of Purchase: _____________________
Serial Number: (see Safety Decal section for location) ____________________________________
Provide this information to your dealer to obtain correct repair parts.
Throughout this manual, the term NOTICE is used to indicate that failure to observe can cause damage to equipment.
The terms CAUTION, WARNING, and DANGER are used in conjunction with the Safety-Alert Symbol (a triangle with
an exclamation mark) to indicate the degree of hazard for items of personal safety.

Introduction 3
20944 (Rev. 9/2/2005)
TABLE OF CONTENTS
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY DECALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
OWNER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DEALER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
DEALER CHECK LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
PARTS LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
BOLT TORQUE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
BOLT SIZE CHART & ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 64
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
REPLACEMENT PARTS WARRANTY . . . . . . . . . . . . INSIDE BACK COVER
PRODUCT WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BACK COVER
(Rev. 3/14/2008)
This Operator’s Manual should be regarded as part of the machine.
Suppliers of both new and second-hand machines must make sure
that this manual is provided with the machine.
Si no lee Ingles, pida ayuda a
alguien que si lo lea para que le
traduzca las medidas de seguridad.
LEA EL INSTRUCTIVO!
!

4 Introduction
20944 (Rev. 9/2/2005)
SPECIFICATIONS
MODEL RM990-3 MOUNTED P990-3 TOWED
Hitch Three Point, Category 1 Towed
Cutting Width 90" 90"
Cutting Height Range 1" - 8" 1" - 8-1/2"
Shipping Weight 930 lbs. 1,000 lbs.
Blade Speed (feet per minute) 15,569 15,569
Blade Speed (RPM) 1,926 1,926
Blade Spindles 3 3
Number of Blades 6 6
Universal Drive Series ASAE Cat. 4 ASAE Cat. 3
Caster Wheels 13 x 5 x 10 Solid Rib Tire -----
or 18 x 19.5 x 8 Pneumatic Tires
Wheels ----- 18 x 19.5 x 8
Rib Pneumatic Tires
Tractor PTO Speed RPM 540 540
Recommended Maximum
Tractor Horsepower 50 50
Mower Frame Thickness 7 GA 7 GA
GENERAL INFORMATION
The purpose of this manual is to assist you in operating
and maintaining your mower. Read it carefully. It fur-
nishes information and instructions that will help you
achieve years of dependable performance. These
instructions have been compiled from extensive field
experience and engineering data. Some information
may be general in nature, due to unknown and varying
operating conditions. However, through experience
and these instructions, you should be able to develop
procedures suitable to your particular situation.
■ Some illustrations in this manual show the
mower with safety shields removed to provide a
better view. The mower should never be operated
with any safety shielding removed.
The illustrations and data used in this manual were cur-
rent at the time of printing. However, due to possible
inline production changes, your machine may vary
slightly in detail. We reserve the right to redesign and
change the machines as may be necessary without
notification.
Throughout this manual, references are made to right
and left directions. These are determined by standing
behind the tractor facing the direction of forward travel.
Blade rotation is counter-clockwise as viewed from the
top of the mower.
WARNING

Safety 5
RM_SR_v2 (Rev. 1/21/2010)
TRAINING
Safety instructions are important! Read all
attachment and power unit manuals; follow all
safety rules and safety decal information. (Replace-
ment manuals and safety decals are available from
your dealer. To locate your nearest dealer, check
the Dealer Locator at www.WoodsEquipment.com,
or in the United States and Canada call 1-800-319-
6637.) Failure to follow instructions or safety rules
can result in serious injury or death.
If you do not understand any part of this manual
and need assistance, see your dealer.
Know your controls and how to stop engine and
attachment quickly in an emergency.
Operators must be instructed in and be capable
of the safe operation of the equipment, its attach-
ments, and all controls. Do not allow anyone to
operate this equipment without proper instruc-
tions.
Never allow children or untrained persons to
operate equipment.
PREPARATION
Check that all hardware is properly installed.
Always tighten to torque chart specifications
unless instructed otherwise in this manual.
Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
Make sure attachment is properly secured,
adjusted, and in good operating condition.
Make sure spring-activated locking pin or collar
slides freely and is seated firmly in tractor PTO
spline groove.
Connect PTO driveline directly to power unit
PTO shaft. Never use adapter sleeves or adapter
shafts. Adapters can cause driveline failures due to
incorrect spline or incorrect operating length and
can result in personal injury or death.
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS system in “locked up” position at all times.
Remove accumulated debris from this equip-
ment, power unit, and engine to avoid fire hazard.
Make sure all safety decals are installed.
Replace if damaged. (See Safety Decals section for
location.)
 Make sure shields and guards are properly
installed and in good condition. Replace if damaged.
A minimum 20% of tractor and equipment
weight must be on the tractor front wheels when
attachments are in transport position. Without this
weight, tractor could tip over, causing personal
injury or death. The weight may be attained with
front wheel weights, ballast in tires or front tractor
weights. Weigh the tractor and equipment. Do not
estimate.
Inspect and clear area of stones, branches, or
other hard objects that might be thrown, causing
injury or damage.
OPERATION
Keep bystanders away from equipment.
Never direct discharge toward people, animals,
or property.
Full chain or rubber shielding must be installed
when operating in populated areas or other areas
where thrown objects could injure people or dam-
age property.
• If this machine is not equipped with full chain
or rubber shielding, operation must be stopped
when anyone comes within 300 feet (92 m).
• This shielding is designed to reduce the risk
of thrown objects. The mower deck and protec-
tive devices cannot prevent all objects from
escaping the blade enclosure in every mowing
condition.
It is possible for objects to ricochet
and escape, traveling as much as 300 feet (92 m).
Do not operate or transport equipment while
under the influence of alcohol or drugs.
Always comply with all state and local lighting
and marking requirements.
Operate only in daylight or good artificial light.
Safety is a primary concern in the design and man-
ufacture of our products. Unfortunately, our efforts
to provide safe equipment can be wiped out by an
operator’s single careless act.
In addition to the design and configuration of equip-
ment, hazard control and accident prevention are
dependent upon the awareness, concern, judge-
ment, and proper training of personnel involved in
the operation, transport, maintenance and storage
of equipment.
It has been said “The best safety device is an
informed, careful operator.” We ask you to be that
kind of operator.
SAFETY RULES
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

6Safety
RM_SR_v2 (Rev. 1/21/2010)
Never allow riders on power unit or attachment.
Keep hands, feet, hair, and clothing away from
equipment while engine is running. Stay clear of all
moving parts.
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS systems in “locked up” position at all times.
Always sit in power unit seat when operating
controls or starting engine. Securely fasten seat
belt, place transmission in neutral, engage brake,
and ensure all other controls are disengaged
before starting power unit engine.
Operate tractor PTO at 540 RPM. Do not exceed.
Look down and to the rear and make sure area
is clear before operating in reverse.
Do not operate or transport on steep slopes.
Do not stop, start, or change directions sud-
denly on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
TRANSPORTATION
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS system in “locked up” position at all times.
Never exceed 20 mph (32.2 km/h) during trans-
port.
Always comply with all state and local lighting
and marking requirements.
Never allow riders on power unit or attachment.
Do not operate PTO during transport.
Look down and to the rear and make sure area
is clear before operating in reverse.
Do not operate or transport on steep slopes.
Do not operate or transport equipment while
under the influence of alcohol or drugs.
MAINTENANCE
Before dismounting power unit or performing
any service or maintenance, follow these steps:
disengage power to equipment, lower the 3-point
hitch and all raised components to the ground,
operate valve levers to release any hydraulic pres-
sure, set parking brake, stop engine, remove key,
and unfasten seat belt.
Before performing any service or maintenance,
lower equipment to ground or block securely, turn
off engine, remove key, and disconnect driveline
from tractor PTO.
Do not modify or alter or permit anyone else to
modify or alter the equipment or any of its compo-
nents in any way.
Make sure attachment is properly secured,
adjusted, and in good operating condition.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Make certain all movement of equipment com-
ponents has stopped before approaching for ser-
vice.
Frequently check blades. They should be sharp,
free of nicks and cracks, and securely fastened.
Do not handle blades with bare hands. Careless
or improper handling may result in serious injury.
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
Tighten all bolts, nuts, and screws to torque
chart specifications. Check that all cotter pins are
installed securely to ensure equipment is in a safe
condition before putting unit into service.
Make sure all safety decals are installed.
Replace if damaged. (See Safety Decals section for
location.)
 Make sure shields and guards are properly
installed and in good condition. Replace if damaged.
STORAGE
Block equipment securely for storage.
Keep children and bystanders away from stor-
age area.
SAFETY RULES
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

Safety 7
20944 (Rev. 2/3/2006)
2
15 - RM990 Only
13 - P990 Only
13 - P990 Only
9
9
8
12
5
6
6
75612
10
11
7
711
11
1
16
3
4
CD3943F
P990
PULL-TYPE P990
PULL-TYPE
1 - Serial Number Plate
MODEL NO. SERIAL NO.
Woods Equipment Company
Oregon, Illinois, U.S.A.
DO NOT EXCEED PTO SPEED OF
540 RPM
PTO speeds higher than 540 RPM can cause
equipment fai ure and persona injury.
WARNING
18866-D
4 - 18866
FALLING OFF CAN RESULT IN BEING RUN OVER.
 Tractor must be equipped with ROPS (or ROPS CAB) and seat
belt. Keep foldable ROPS systems in “locked up” position at all
times.
 Buckle Up! Keep seat belt securely fastened.
 Allow no riders.
RAISED EQUIPMENT CAN DROP AND CRUSH.
 Before working underneath, follow all instructions and safety rules in
operator’s manual and securely block up all corners of equipment
with jack stands.
 Securely blocking prevents equipment dropping from hydraulic leak-
down, hydraulic system failures or mechanical component failures.
FALLING OFF OR FAILING TO BLOCK SECURELY CAN
RESULT IN SERIOUS INJURY OR DEATH.
WARNING
18865--C
2 - 18865
12 - 20106 Red Rear Reflector
SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!

8 Safety 20944 (Rev. 2/3/2006)
SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!
BE CAREFUL!
Use a clean, damp cloth to clean safety decals. Avoid
spraying too close to decals when using a pressure
washer; high-pressure water can enter through very
small scratches or under edges of decals causing
them to peel or come off.
Replacement safety decals can be ordered free from
your Woods dealer. To locate your nearest dealer,
check the Dealer Locator at
www.WoodsEquipment.com, or in the United States
and Canada call 1-800-319-6637.
7 - 18864
DANGER
ROTATING DRIVELINE
CONTACT CAN CAUSE DEATH
KEEP AWAY!
DO NOT OPERATE WITHOUT -
All driveline guards, tractor and
equipment shields in place
Drivelines securely attached at both ends
Driveline guards that turn freely on
driveline 18864-C
SHIELD MISSING
DO NOT OPERATE
PUT SHIELD ON
DANGER
18867--B
5 - 18867
WARNING
TO AVOID SERIOUS
INJURY OR DEATH:
 Read Operator's Manual (available
from dealer) and follow all safety
precautions.
Keep all shields in place and in good
condition.
Operate mower from tractor seat only.
Lower mower, stop engine and remove
key before dismounting tractor.
Allow no children or untrained persons
to operate equipment.
Do not transport towed or
semi-mounted units over 20 mph.
FAILURE TO OPERATE SAFELY
CAN RESULT IN
INJURY OR DEATH. 18877-C
3 - 18877
CONTACT WITH ROTATING PARTS
CAN CAUSE SERIOUS INJURY.
WARNING
15502--B
ROTATING COMPONENTS
Do not operate without cover in place.
Look and listen for rotation. Do not
open cover until all components have
stopped.
6 - 15502
HIGH-PRESSURE HYDRAULIC OIL LEAKS CAN PENETRATE SKIN
RESULTING IN SERIOUS INJURY, GANGRENE OR DEATH.
n Check for leaks with cardboard; never use hand.
n Before loosening fittings: lower load, release pressure, and
be sure oil is cool.
n Consult physician immediately if skin penetration occurs.
WARNING
19924-B
8 - 19924
SHIELD MISSING
Do not operate.
Put shield on.
DANGER
18868-B
13 - 18868
SHIELD MISSING
DO NOT OPERATE - PUT SHIELD ON
18869-B
DANGER
15 - 18869

Safety 9
20944 (Rev. 2/3/2006)
9 - 19782
10 - 15503 11 - 33347
ROTATING BLADES AND
THROWN OBJECTS
Do not put hands or feet under or into mower when
engine is running.
Before mowing, clear area of objects that may be
thrown by blade.
Keep bystanders away.
Keep guards in place and in good condition.
BLADE CONTACT OR THROWN OBJECTS CAN
CAUSE SERIOUS INJURY OR DEATH.
DANGER
15503-C
GUARD MISSING.
DO NOT OPERATE.
DANGER
33347E
DANGER
DANGER
GUARD MISSING.
DO NOT OPERATE.
If shaft connection is visible, shield
is missing. Replace shield before
operating equipment.
DA
NG
NG
ER
ER
1004114
16 - 1004114
SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!

10 Operation
20944 (Rev. 2/3/2006)
OPERATION
The operator is responsible for the safe operation of
the mower. The operator must be properly trained.
Operators should be familiar with the mower, the trac-
tor, and all safety practices before starting operation.
Read the safety rules and safety decals on page 5 to
page 9. This mower is designed for light brush shred-
ding and grass mowing. It is especially useful in cane,
berry, grape and vegetable crops for mowing and
shredding prunings. Recommended mowing speed for
most conditions is from two to five mph.
Full chain or rubber shielding must be installed
when operating in populated areas or other areas
where thrown objects could injure people or dam-
age property.
• If this machine is not equipped with full chain
or rubber shielding, operation must be stopped
when anyone comes within 300 feet (92 m).
• This shielding is designed to reduce the risk
of thrown objects. The mower deck and protec-
tive devices cannot prevent all objects from
escaping the blade enclosure in every mowing
condition.
It is possible for objects to ricochet
and escape, traveling as much as 300 feet (92 m).
Never allow children or untrained persons to
operate equipment.
Keep bystanders away from equipment.
Before servicing, adjusting, repairing or unplug-
ging, stop tractor engine, place all controls in neu-
tral, set park brake, remove ignition key, and wait
for all moving parts to stop.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
ATTACHING RM990-3 MOUNTED MOWER
TO TRACTOR
Hitch Point Distance and PTO Clearance
Figure 1. PTO to Mounting Point Distance - RM990-3
The standard drive is intended for use with tractors that
have 18" to 21" between the end of the tractor PTO
shaft and the mounting pin holes on the lower lift arms
when they are horizontal (refer to Figure 1). If the dis-
tance is less than 18", the slip tubes of the PTO shaft
can bottom out. If the distance exceeds 21", there may
not be sufficient engagement when operating on
uneven terrain. Shorter or longer drives are available.
Contact your WOODS dealer for assistance.
Standard Category 1 mounting pins are used when
attaching the mower to the tractor. Check to be sure
the mounting pins are properly torqued to 300 lbs-ft.
Attach the mower hitch pins to the lower tractor lift
arms and secure.
Attach the tractor top link to mower top clevis. Connect
driveline to tractor PTO shaft. A standard 1-3/8" 6B
spline driveline with a QD yoke is used to connect
mower to tractor. Adjust top link. (See page 12.)
Attach the front driveline shield tether chain to the trac-
tor to prevent driveline shield rotation.
Carefully raise mower and check for driveline clear-
ance between drive shielding and front of mower
frame; a minimum of 1/2" clearance is required. Adjust-
ment to tractor upper lift stop may be required to pre-
vent driveline from coming in contact with mower
frame.
Make sure spring-activated locking pin or collar
slides freely and is seated firmly in tractor PTO
spline groove.
ADANGER
AWARNING
ACAUTION
AWARNING
(Rev. 4/28/2006)

Operation 11
20944 (Rev. 2/3/2006)
Cutting Height Adjustment
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
■ Avoid very low cutting heights. Blades striking
the ground produces one of the most damaging
shock loads a mower can encounter. Allowing
blades to contact ground repeatedly, will cause
damage to mower and drive.
Before leveling unit that is equipped with pneumatic
tires, check air pressure. Follow manufacturer's guide-
lines on tire sidewall.
Level mower from side to side. Check by measuring
from mower frame to the ground at each front corner.
Adjust, using tractor 3-point arm leveling device. See
page 12.
Adjust cutting height with tractor 3-point arms and rear
caster wheel adjustment. The cutting height will be the
distance between the blade and the ground. The
blades are approximately 5" below the top of the
mower frame. To check cutting height, place a straight
edge along top edge of mower frame as shown in Fig-
ure 2. Measure from bottom of straightedge to the
ground at locations (A) and (B). Subtract 5" from mea-
surement (B) to determine cutting height.
For best mowing results adjust the front of the mower
slightly lower than the rear. Measurement at location
(A) should be at least 1/4" greater than location (B),
and not more than 1/2" greater than location (B).
Adjust the check chains, tailwheel and/or lower tractor
lift arms to maintain desired cutting height.
NOTE: Optional check chains and front gauge
wheels are available.
Before working underneath, raise mower to
highest position and block securely. Blocking up
prevents mower dropping due to hydraulic leak
down, hydraulic system failures, or mechanical
component failures.
Figure 2. Cutting Height Adjustment
on RM990-3 Mounted Mower
Cutting Height Adjustment with Front & Rear
Caster Wheel
Place the front and rear adjustment in corresponding
lettered holes. Refer to the chart for approximate cut-
ting height.
Figure 3. RM990-3 Cutting Height Adjustment with Front Caster Wheel
AWARNING
AWARNING
Hole No. Approximate Cutting Height
A1.00"
B1.50"
C2.00"
D2.50"
E3.00"
F3.5"
Hole No. Approximate Cutting Height
G 4.00"
H 4.50"
I 5.00"
J 6.00"
K 7.00"
L 8.00"

12 Operation
20944 (Rev. 2/3/2006)
Top Link Adjustment
When the cutting height is adjusted, adjust tractor top
link until mower top link attachment point (A) is aligned
vertically with mower hitch pin (B).
Figure 4. Top Link Adjustment - RM990-3
Tractor Stability
A minimum 20% of tractor and equipment
weight must be on the tractor front wheels when
attachments are in transport position. Without this
weight, tractor could tip over, causing personal
injury or death. The weight may be attained with
front wheel weights, ballast in tires or front tractor
weights. Weigh the tractor and equipment. Do not
estimate.
Figure 5. Tractor Stability - RM990-3
ATTACHING P990-3 PULL-TYPE MOWER
TO TRACTOR
Drawbar to Hitch Point Distance
Connect mower tongue to tractor drawbar. The mower
is shipped with a 1-3/8" PTO spline. The horizontal dis-
tance between the end of the tractor PTO shaft and the
drawbar hitch point should be 14". This distance must
not vary more or less than 1" or the drive may be dam-
aged when turning.
Adjust the tractor drawbar to obtain the desired draw-
bar to hitch point distance. On some tractors, a draw-
bar kit must be used to obtain the required dimension.
Check with your tractor dealer if you encounter prob-
lems.
When attaching a pull-type unit to the tractor
drawbar, always use a high-strength drawbar pin.
The drawbar pin must have a device that will lock it
into position. Secure safety chain to attachment
and tractor.
Raise mower tongue to tractor drawbar height with jack
provided and attach with a 3/4" or larger high-strength
drawbar pin. Retain pin to keep it in place.
Connect mower driveline to tractor PTO shaft, making
sure spring-activated locking pin slides freely and is
seated firmly in tractor PTO spline groove.
When driveline is attached to tractor, attach front drive-
line shield tether chain to the tractor to prevent drive-
line shield rotation.
Make sure spring-activated locking pin or collar
slides freely and is seated firmly in tractor PTO
spline groove.
Adjust drive shaft carrier bearing vertically in H-frame
until driveline is as straight as possible between tractor
PTO and mower gearbox.
Remove parking jack from tongue. Attach to storage
bracket on deck. Always attach jack to tongue to hold it
up when disconnecting it from tractor.
Cutting Height Adjustment
Place tractor and mower on a level surface. Check to
make sure tire pressure is correct and equal on tractor
and mower. The correct pressure for mower pneumatic
tires is 36 psi.
NOTICE
■ Avoid very low cutting heights. Blades striking
the ground one of the most damaging shock loads
a mower can encounter. Allowing blades to contact
ground repeatedly, will cause damage to mower
and drive.
Adjust the mower front to back with an attitude rod.
Raise the mower front by turning the attitude rod nut in;
lower it by turning nut out. Run front of mower level
with rear, or no more than 1/2" lower than rear. Mower
cutting height is raised, lowered, and maintained with a
AWARNING
AWARNING
AWARNING

Operation 13
20944 (Rev. 2/3/2006)
manual ratchet adjustment link or optional hydraulic
cylinder.
An optional stroke control kit is available for use with
the optional hydraulic cylinder. When a desired cutting
height is pre-set and the stroke control kit is placed on
the cylinder rod, you can raise the mower and return
easily to the pre-set height.
PRE-OPERATION CHECKLIST
(Owner Responsibility)
___ Review and follow all safety rules and safety
decal instructions on page 5 through page 9.
___ Check that all safety decals are installed and in
good condition. Replace if damaged.
___ Check that all shields and guards are properly
installed and in good condition. Replace if dam-
aged.
___ Check that all hardware and cotter pins are prop-
erly installed and secured.
___ Check to ensure blades are sharp, in good condi-
tion, and installed correctly. Replace if damaged.
___ Check that equipment is properly and securely
attached to tractor.
___ Make sure driveline spring-activated locking pin
or collar slides freely and is seated firmly in trac-
tor PTO spline groove.
___ Before starting tractor, check all equipment drive-
line guards for damage and make sure they
rotate freely on all drivelines. Replace any dam-
aged guards. If guards do not rotate freely on
drivelines, repair and replace bearings before
operating.
___ Make sure the driveline guards and tether chains
are in good condition. Guards must rotate freely
on driveline. Fasten tether chains as instructed to
the tractor and the equipment.
___ Inspect area and remove stones, branches or
other hard objects that might be thrown, causing
injury or damage.
___ Do not allow riders.
___ Check all lubrication points and grease as
instructed in “Service, Lubrication Information”.
Make sure the PTO slip joint is lubricated and that
the gearbox fluid levels are correct.
___ Set tractor PTO at 540 rpm.
___ Check that all hydraulic hoses and fittings are in
good condition and not leaking before starting
tractor. Check that hoses are not twisted, bent
sharply, kinked, frayed or pulled tight. Replace
any damaged hoses immediately.
___ Raise and lower equipment to make sure air is
purged from hydraulic cylinders and hoses.
___ Make sure tractor ROPS or ROPS CAB and seat
belt are in good condition. Keep seat belt
securely fastened during operation.
___ Before starting engine, operator must be in trac-
tor seat with seat belt fastened. Place transmis-
sion in neutral or park, engage brake and
disengage tractor PTO.
STARTING AND STOPPING MOWER
Power for operating the mower is supplied by tractor
PTO. Do not exceed tractor manufacturer's rated PTO
speed of 540 rpm maximum. Know how to stop tractor
and mower quickly in case of an emergency.
Should mower become plugged, causing belt to slip,
immediately maneuver equipment into a previously cut
area and allow mower to clear accumulated material.
Continue running at least two minutes, allowing pulleys
to cool. Stopping the mower with belt in contact with a
very hot pulley will bake and ruin belt.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage before
resuming operation.
OPERATING TECHNIQUE
Proper ground speed will depend upon the terrain and
the height, type and density of material to be cut. Nor-
mally, ground speed will range from two to five mph.
Tall dense material should be cut at a low speed, while
thin medium-height material can be cut at a higher
ground speed.
Always operate tractor PTO at 540 rpm; this is neces-
sary to maintain proper blade speed and produce a
clean cut.
Under certain conditions, tractor tires may roll some
grass down and prevent it from being cut at the same
height as the surrounding area. When this occurs,
reduce tractor ground speed but maintain 540 rpm PTO
speed. The lower ground speed will permit grass to at
least partially rebound.
Under some conditions, grass will not rebound enough
to be cut evenly. In general, lower cutting heights give a
more even cut with less tendency to leave tire tracks.
However, it is better to cut grass frequently rather than
too short. Short grass deteriorates rapidly in hot
weather and invites weed growth during growing sea-
sons. Follow local recommendations for the suitable
cutting height in your area.
ACAUTION

14 Operation
20944 (Rev. 2/3/2006)
Tips
Inspect and clear area of stones, branches, or
other hard objects that might be thrown, causing
injury or damage.
Extremely tall material should be cut twice. Cut mate-
rial higher the first pass. Then cut at desired height, at
90° to first pass.
Remember, sharp blades produce cleaner cuts and
require less power.
Analyze area to be cut to determine best procedure.
Consider height and type of material and terrain type:
hilly, level or rough.
Plan your mowing pattern to travel straight forward
whenever possible.
Optional Blade
The mower is equipped with free-swinging suction type
blades as standard equipment when shipped from the
factory. If you are operating in a sandy area or where
high abrasive wear occurs and causes damage to the
fin of the standard suction type blade, an optional low
suction type blade is available.
Optional Front Roller
The tailwheels and side skids effectively reduce scalp-
ing in most cases. However, you may encounter areas
where the tailwheels and/or side skids drop into
depressions and allow center of mower to contact
ground and scalp. An optional front roller may be
installed to minimize scalping.
Uneven Terrain
Do not operate or transport on steep slopes.
Do not stop, start, or change directions sud-
denly on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
Pass diagonally through sharp dips and avoid sharp
drops to prevent “hanging up” tractor and mower.
TRANSPORTING P990-3 MOWER
Either the standard ratchet adjustment link or optional
hydraulic cylinder and transport bar must be installed
when transporting mower.
A transport bar, to be used in conjunction with the
hydraulic cylinder, is furnished with each P990-3
mower. It must be installed when the optional hydraulic
cylinder is used to control cutting height.
Transport Bar Storage Position (Figure 6)
When not in use, the transport bar (3) should be piv-
oted to the rear, away from the cylinder, and the lock
pin should be installed in the hole and secured with
hairpin cotter (5).
Engaging Transport Bar (Figure 7)
Raise mower with hydraulic cylinder and pivot transport
bar (4) forward over cylinder rod (6). Install lock pin (3)
through hole in transport lock (7) and secure with hair-
pin cotter (2).
Figure 6. P990-3 Transport Bar - Operating Position
AWARNING
AWARNING
AWARNING

Operation 15
20944 (Rev. 2/3/2006)
Figure 7. P990-3 Transport Bar -
Raised Transport Position
Removing Mower from Tractor
Place tractor and mower on a solid level surface. Raise
mower and block securely.
Disengage PTO, set parking brake, stop engine and
remove key.
On pull-type units, place the jack on the tongue for
parking. Secure driveline up off the ground.
CLEANING
After Each Use
●Remove large debris such as clumps of dirt, grass,
crop residue, etc. from machine.
●Inspect machine and replace worn or damaged
parts.
●Replace any safety decals that are missing or not
readable.
Periodically or Before Extended Storage
●Clean large debris such as clumps of dirt, grass,
crop residue, etc. from machine.
●Remove the remainder using a low-pressure water
spray.
1. Be careful when spraying near scratched or torn
safety decals or near edges of decals as water
spray can peel decal off surface.
2. Be careful when spraying near chipped or
scratched paint as water spray can lift paint.
3. If a pressure washer is used, follow the advice
of the pressure washer manufacturer.
●Inspect machine and replace worn or damaged
parts.
●Sand down scratches and the edges of areas of
missing paint and coat with Woods spray paint of
matching color (purchase from your Woods
dealer).
●Replace any safety decals that are missing or not
readable (supplied free by your Woods dealer).
See Safety Decals section for location drawing.

16 Owner Service
20944 (Rev. 2/3/2006)
OWNER SERVICE
Before servicing, adjusting, repairing or unplug-
ging, stop tractor engine, place all controls in neu-
tral, set park brake, remove ignition key, and wait
for all moving parts to stop.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Your dealer can supply original equipment
hydraulic accessories and repair parts. Substitute
parts may not meet original equipment specifica-
tions and may be dangerous.
Always wear relatively tight and belted clothing
to avoid getting caught in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head;
and respirator or filter mask where appropriate.
The information in this section is written for operators
who possess basic mechanical skills. Should you need
help, your dealer has trained service technicians avail-
able. For your protection, read and follow all safety
information in this manual.
BLOCKING METHODS
Jack stands, with a load rating of 1,000 pounds or
more, are the only approved blocking device for this
mower. A minimum of four jack stands, located under
the mower as shown in Figure 8, must be installed
before working underneath this unit. Do not position
jack stands under wheels, axles, or wheel supports
because these components can rotate.
Do not work underneath unless it is properly attached
to tractor (see Operation Section), the brakes set, key
removed, and the mower blocked securely. The
mounted unit will be anchored to minimize side to side
and front to rear movement. The pull-type unit will be
anchored front to rear.
For the mounted unit, tighten tractor lower 3-point arm
anti-sway mechanisms to prevent side to side move-
ment.
For the pull-type unit, raise mower with the standard
ratchet adjustment link or the optional hydraulic cylin-
der. When the optional hydraulic cylinder is installed
the standard equipment transport bar must be pinned
in the raised position. With either the ratchet adjust-
ment link or the optional hydraulic cylinder, lower
mower to transfer its weight to the jack stands, but do
not raise the rear wheels off of the ground.
When blocking, you must consider overall stability of
the unit. Just placing jack stands under the unit will not
ensure your safety. The working surface must be level
and solid to support the weight on the jack stands.
Ensure jack stands are stable both top and bottom, and
mower is approximately level. With full mower weight
lowered on jack stands, test blocking stability before
working underneath mower.
Figure 8. Jack Stand Placement
(Tractor and Connection Not Shown)
LUBRICATION INFORMATION (FIGURE 9)
Figure 9 shows the lubrication points. The accompany-
ing chart gives the frequency of lubrication in operating
hours, based on normal conditions. Severe or unusual
conditions may require more frequent lubrication.
Do not let excess grease collect on or around parts,
particularly when operating in sandy areas.
Use SAE 90W gear lube in gearbox. Check gearbox
daily for evidence of leakage at both seals and the gas-
ket between the housing and cover. If leakage is noted,
repair immediately. There may be a small amount of
lube emitted from the vent plug; this is not considered
leakage. Check the gearbox every day using the dip-
stick. Oil level is to be up to the ring but not over. Over-
filling the gearbox will cause the excess gear lube to
blow out vent plug. The gear lube could then ruin the
belt.
Use a lithium grease of No. 2 consistency with a MOLY
(molybdenum disulfide) additive for all locations. Be
sure to clean fittings thoroughly before attaching
grease gun. When applied according to the lubrication
chart, one good pump of most guns is sufficient. Do not
overgrease.
Daily lubrication of the driveline slip joint is necessary.
Failure to maintain proper lubrication can result in
AWARNING
ACAUTION

Owner Service 17
20944 (Rev. 2/3/2006)
damage to U-joints, gearbox, tractor PTO and/or the
mower driveline. Disconnect driveline from the tractor.
To lubricate driveline slip joint, insert a grease gun
through shield slots (keep fingers out of slots to prevent
injury) and apply grease to grease fitting. Move drive-
line in and out to distribute grease over the entire work-
ing area. Connect driveline to tractor.
Driveline shield bearings (12) must be greased every
eight hours. This operation requires a needle point
adapter for a grease gun. Insert the needle point into
the bearing hole and apply one good pump.
Figure 9. Lubrication Points
Ref No. Description Frequency
1 Front U-Joint 8 Hours
2 Rear U-Joint 8 Hours
3 Gearbox, Cover half of horizontal shaft
with SAE 90W gear lube Check Daily
4 Tailwheel Pivot Arm 8 Hours, Repack
5 Tailwheel (Mounted Model) 250 Hours
6 Slip Joint Zerk (Mounted Model) 8 Hours
7 Tailwheels (Towed Model) 10 Hours
8 Driveline Carrier Bearing (Towed
Model) 10 Hours
9 Slip Joint Zerk (Towed Model) 10 Hours
10 Center U-Joint (Towed Model) 10 Hours
11 Ratchet Adjustment Link 100 Hours
12 Shield Bearing 8 Hours
13 Left Blade Spindle 10 Hours
14 Center Blade Spindle 10 Hours
15 Right Blade Spindle 10 Hours
Ref No. Description Frequency

18 Owner Service
20944 (Rev. 2/3/2006)
Figure 10. Belt Installation
BELT REPLACEMENT (FIGURE 10)
One of the major causes of belt failure is improper
installation. Before a new belt is installed, check pulley
shafts and bearings for wear. Check pulley grooves for
cleanliness. Make sure spindles turn freely and without
wobble. If grooves require cleaning, use a cloth moist-
ened with a non-flammable, non-toxic degreasing
agent or commercial detergent and water.
Avoid excessive force during installation. Do not use
tools to pry belt into pulley groove. Do not roll belt over
pulleys to install. This can cause hidden damage and
premature belt failure.
NOTICE
■ Use care when installing or removing belt from
spring-loaded idler in step 6. Springs store energy
when extended and, if released suddenly, can
cause personal injury.
Belt replacement is accomplished in these steps:
1. Loosen nut and swing belt guide (G) away from
pulley (F).
2. Loosen nut on eyebolt (H) to relax tension in
spring.
3. Slide belt under and around drive pulley (A).
4. Route belt around pulley (F), idler (E) and pulley
(D) as shown.
5. Make sure belt is on drive pulley (A) and route belt
around spring-loaded idler (C).
6. Grasp belt between spindle pulley (B), spring-
loaded idler (C) and spindle pulley (D). Pull spring-
loaded idler with belt and route belt over pulley (B).
7. Tighten nut on eyebolt (H). Make sure spring-
loaded idler arm pivots freely with belt installed.
8. Set belt guide (G) 1/8" away from belt. Tighten to
85 lbs-ft.
SHEAR BOLT REPLACEMENT
NOTICE
■ Always use approved 1/2" NC x 3" grade 2
shear bolt as a replacement part. Using a hardened
bolt or shear pin may result in damage to driveline
or gearbox.
Rotate driveline to align holes in yoke and shaft. Install
shear bolt and secure with lock nut.
CHAIN OR RUBBER SHIELDING REPAIR
Full chain or rubber shielding must be installed
when operating in populated areas or other areas
where thrown objects could injure people or dam-
age property.
• If this machine is not equipped with full chain
or rubber shielding, operation must be stopped
when anyone comes within 300 feet (92 m).
• This shielding is designed to reduce the risk
of thrown objects. The mower deck and protec-
tive devices cannot prevent all objects from
escaping the blade enclosure in every mowing
condition.
It is possible for objects to ricochet
and escape, traveling as much as 300 feet (92 m).
ADANGER
(Rev. 4/28/2006)

Owner Service 19
20944 (Rev. 2/3/2006)
Chain Shielding Repair
Inspect chain shielding each day of operation and
replace any broken or missing chains as required.
SIDE SKID REPAIR
Side skids are replaceable. Check them periodically
and replace as necessary.
Figure 11. Side Skid Repair
BLADE SERVICING
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
Make certain all movement of equipment com-
ponents has stopped before approaching for ser-
vice.
Low suction and general purpose suction blades are
available. Use low suction blades in sandy areas where
abrasive action could cause excessive blade wear.
General purpose suction blades are recommended for
all other applications.
Inspect blades before operation for condition and
ensure they are securely fastened. Replace blades that
are bent, excessively nicked, worn or have any other
damage. Small nicks may be ground out when sharp-
ening.
Replace blades on a spindle in pairs; an old blade and
a new blade may vary excessively in weight and cause
vibration. Never mix blade types.
Blade Sharpening
Follow the original sharpening pattern. Make an effort
to maintain balance on both blades from a spindle by
grinding the same amount from them. Blades that vary
excessively in weight can cause vibration.
Figure 12. Blade Sharpening
Blade Removal
This mower is equipped with quick change blades.
Open blade access cover, loosen bolt (5) and rotate
blade lock (4) to allow for removal of blade pin (3).
Remove blade (2). Rotate spindle and remove opposite
blade in same manner.
Blade Installation
Make sure to position blade so the cutting edge leads
in a counter-clockwise rotation. Install blade (2), then
place blade pin (3) in hole and rotate blade lock (4) to
secure blade. Tighten bolt (5). Rotate spindle and
install opposite blade in same manner. Repeat for
remaining spindles.
Figure 13. Blade Installation and Lock
WHEEL BEARING MAINTENANCE
RM990-3 ONLY
At least once each mowing season or 250 hours of
operation, whichever occurs first, the bearings in the
tailwheel should be removed, cleaned and repacked.
Replace bearings and cones if broken or worn exces-
sively.
Install the wheel in the wheel yoke and tighten the inner
nut until there is a slight bearing drag (similar to auto-
mobile wheels). Hold the inner nut and tighten the lock
nut against it to maintain bearing adjustment.
1. Side skid bar
2. 3/8 x 1-1/4" Clipped
head bolt
3. 3/8 " Lock washer
4. 3/8" Hex lock nut
ACAUTION
1. Blade spindle
2. Blade
3. Blade pin
4. Blade lock
5. 1/2 x 3/4" Nylock
bolt
(Rev. 4/28/2006)

20 Troubleshooting
20944 (Rev. 2/3/2006)
TROUBLESHOOTING
MOWING CONDITIONS
PROBLEM POSSIBLE CAUSE SOLUTION
Grass cut higher in center of swath
than at edge Height of mower higher at rear
than at front Adjust mower height and attitude so that mower rear and front are
within 1/2" of same height.
Grass cut lower in center swath
than at edge Height of mower lower at rear than
at front Adjust mower height and attitude so that mower rear and front are
1/2" of same height.
Streaking conditions in swath Conditions too wet for mowing Allow grass to dry before mowing.
Blades unable to cut that part of
grass pressed down by path of
tractor tires
Slow ground speed of tractor but
keep engine running at full PTO
rpm.
Dull blades Sharpen or replace blades.
Material discharge from mower
unevenly; bunches of material
along swath
Material too high and too much
material Reduce ground speed but main- tain 540 rpm at tractor PTO, or
make two passes over material.
Raise mower for the first pass and
lower to desired height for the sec-
ond and cut at 90° to first pass.
Raise rear of mower high enough
to permit material to discharge, but
not so high that conditions listed
above occur.
Grass wet Allow grass to dry before mowing.
Slow ground speed of tractor but
keep engine running at full PTO
rpm.
Rear of mower too low, trapping
material under mower Adjust mower height and attitude.