Two-Stage Snow Blowers
Operator’s Manual
Safety, Assembly, Operating, and Maintenance Instructions
42” Model
P/N: 6670-1
S/N: 21210627 and up
50” Model
P/N: 6670-20
S/N: 21210627 and up
Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Instructions Prior to Operating Machine
Eective Date: 08.01.14
Foreword
Thank you...for purchasing a Walker snowblower. Every effort has been made to provide you with the
most reliable product on the market, and we are sure you will be among our many satisfied customers. It
for any reason this product does not perform to you expectations, please contact us at (970) 221-5614.
Every customer is important to us. Your satisfaction is our goal.
Please... read this manual thoroughly! This manual is to be used in conjunction with this mower owner’s
manual and the engine manufacturer’s manual for the specific engine on the mower model you are using.
Before you operate your new snowblower, please read this entire manual.
Some of the information is crucial for proper operation and maintenance of this product – it will help
protect your investment and ensure that the snowblower performs to your satisfaction. Some of the
information is important to your safety and must be read and understood to help prevent possible injury to
your operator or others. If anything in this manual is confusing or hard to understand, please call your
service department, at (970) 221-5614, for clarification before operating or servicing this product.
This manual covers the Model 6670-1 & 6671-20 Snowblowers.
All shields and guards must be in place for the proper and safe operation of these snowblowers.
Where they are shown removed in this manual, it is for illustration purposes only. Do not operate this
product unless all shields and guards are in place.
Walker Mfg. Co. is continually striving to improve the design and performance of its products. We reserve
the right to make changes in specifications and design without thereby incurring any obligation relative to
previously manufactured products.
Sincerely
WALKER MANUFACTURING COMPANY
Bob Walker, President
TABLE OF CONTENT
OM 0182SB-A
1
INTRODUCTION – TO THE PURCHASER ............................................................................................... 3
SAFETY PRECAUTIONS ........................................................................................................................... 4
Before Operation ............................................................................................................................... 4
Notice ................................................................................................................................................ 5
The Snowblower ................................................................................................................................ 5
Before Operation ................................................................................................................ 5
Snowblower Operation ....................................................................................................... 6
The Tractor ........................................................................................................................................ 7
General Information ............................................................................................................ 7
Operating the Tractor .......................................................................................................... 7
During Operation ................................................................................................................ 7
Maintenance ...................................................................................................................................... 8
Transporting....................................................................................................................................... 8
Storage .......................................................................................................................................... 8
DECALS .................................................................................................................................................... 9
ASSEMBLY .............................................................................................................................................. 10
Hitch Installation – Tractor Side ....................................................................................................... 10
Attaching Quick Hitch to Tractor ..................................................................................... 10
Adjustments ................................................................................................................... 10
Wiring ........................................................................................................................... 11
Snowblower Assembly .................................................................................................................... 12
Snowblower Preparation ................................................................................................. 12
Attaching Blower to Tractor ............................................................................................. 13
Removing Snowblower from Tractor ............................................................................... 14
Installation of Electric Chute Rotation Kit 475 (Option) ................................................... 15
Installation of Electric Deflector Kit 9370 (Option) ........................................................... 16
OPERATION ............................................................................................................................................ 17
General Preparation ........................................................................................................................ 17
Operating Controls ........................................................................................................................... 17
Deflector Adjustment ...................................................................................................... 17
Engine Speed ................................................................................................................. 17
Manual Rotation .............................................................................................................. 17
Increasing Traction and Stability ..................................................................................... 17
PTO ................................................................................................................................ 17
Snowblower Pitch Adjustment ........................................................................................ 17
Skid Shoes Adjustment ................................................................................................... 17
Snow Removal Method .................................................................................................................... 18
TABLE OF CONTENT
OM 0182SB-A
2
MAINTENANCE ....................................................................................................................................... 19
Maintenance .................................................................................................................................... 19
Drive Chain Adjustment ................................................................................................... 19
Reduction Sprocket Removal .......................................................................................... 19
Shear Bolts ...................................................................................................................... 19
Lubrication ....................................................................................................................................... 20
Auger Sections ................................................................................................................ 20
Worm Gearbox ................................................................................................................ 20
Drive Chain ..................................................................................................................... 20
Chain ............................................................................................................................... 20
PARTS ...................................................................................................................................................... 21
Introduction ........................................................................................................................................ 21
Male Quick Hitch Assembly - 6625 .................................................................................................... 22
Male Quick Hitch System ................................................................................................................... 23
Snowblower Assembly 6670-1 (42") & 6671-20 (50") ........................................................................ 24
Reduction Box Assembly ................................................................................................................... 26
Standard Chute with Deflector ........................................................................................................... 27
Manual Chute Rotation System ......................................................................................................... 28
Female Quick Hitch ........................................................................................................................... 29
Female Quick Hitch Assembly 6670-1 ............................................................................................... 30
Driveline Male Portion Assembly ....................................................................................................... 31
Electric Chute Rotation Kit- 9475 (Option) ......................................................................................... 32
Electric Deflector Kit- 9370 (Option) ................................................................................................... 33
Worm Gearbox ................................................................................................................................. 34
AVAILABLE EQUIPMENT ........................................................................................................................ 35
TORQUE SPECIFICATION TABLE ......................................................................................................... 36
INTRODUCTION
TO THE PURCHASER
All products are designed to give safe,
dependable service if they are operated and
maintained according to instructions. Read and
understand this manual before operation.
This manual has been prepared to assist the
owner and operators in the safe operation and
suitable maintenance of the equipments. The
information was applicable to products at the
time of manufacture and does not include
modifications made afterwards.
Read and understand this operator's manual
before attempting to put an equipment into
service. Familiarize yourself with the operating
instructions and all the safety recommendations
contained in this manual and those labeled on
the equipments and on the tractor. Follow the
safety recommendations and make sure that
those with whom you work follow them.
To assist your dealer in handling your needs, please record hereafter the model number and serial
number of your equipment and tractor. It is also advisable to supply them to your insurance company. It
will be helpful in the event that an equipment or tractor is lost or stolen.
Illustrations
The illustrations may not necessarily reproduce
the full detail and the exact shape of the parts or
depict the actual models, but are intended for
reference only.
Direction Reference
All reference to right and left, forward or
rearward, are from the operator's seat, facing the
steering wheel.
TRACTOR IMPLEMENT
MODEL:
SERIAL NUMBER:
DATE OF PURCHASE:
DEALER NAME:
OM 0182SB-A 3
SAFETY PRECAUTIONS
SAFETY FIRST
This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels
on the machine itself to warn of the possibility of personal injury. Read these instructions
carefully. It is essential that you read the instructions and safety regulations before you attempt
to assemble or use this unit.
DANGER : Indicates an immediately hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING : Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury.
IMPORTANT : Indicates that equipment or property damage could result if instructions are
not followed.
NOTE : Gives helpful information.
All products are designed to give safe, dependable service if they are operated and maintained according
to instructions. Read and understand this manual before operation. It is the owner's responsibility to
be certain anyone operating this product reads this manual, and all other applicable manuals, to become
familiar with this equipment and all safety precautions. Failure to do so could result in serious personal
injury or equipment damage. If you have any questions, consult your dealer.
BEFORE OPERATION
Children
Tragic accidents can occur if the operator is not
alert to the presence of children. Children are
generally attracted to machines and the work
being done. Never assume children will remain
where you last saw them.
1. Keep children out of the operating area and
under the watchful eye of another responsible
adult.
2. Be alert and turn machine off if children enter
the work area.
3. Before and when backing, look behind for small
children.
4. Never carry children while operating the
machine. They may fall off and be seriously
injured or interfere with the safe operation of
the machine.
5. Never allow children to play on the machine or
attachment even when they are turned off.
6. Never allow children to operate the machine
even under adult supervision.
7. Use extra care when approaching blind
corners, shrubs, trees, or other obstructions
that might hide children from sight.
OM 0182SB-A 4
SAFETY PRECAUTIONS - continued
OM 0182SB-A 5
NOTICE
A safe operator is the best assurance against accidents. All operators, no matter how experienced they
may be, should read this operator's manual and all other related manuals before attempting to operate an
equipment. Please read the following section and pay particular attention to all safety recommendations
contained in this manual and those labeled on the equipment and on the tractor.
THE SNOWBLOWER
Before Operation
1. Read and understand this operator's manual
and tractor operator's manual. Know how to
operate all controls and how to stop the unit
and disengage the controls quickly.
2. Never wear loose, torn, or bulky clothing
around the tractor and the snowblower. It
may catch on moving parts or controls,
leading to the risk of accident.
3. Before and during the snow season,
thoroughly inspect the area where the
equipment is to be used and remove all
objects that may be thrown or cause damage
to the equipment.
4. Set transmission to neutral and disengage
clutch and shift into neutral before starting
the engine.
5. Do not operate equipment in wintertime
without wearing adequate winter garments.
6. Never attempt to make any adjustments
while engine is running. Read this manual
carefully to acquaint yourself with the
equipment as well as the tractor operator's
manual. Working with unfamiliar equipment
can lead to accidents. Be thoroughly familiar
with the controls and proper use of the
equipment.
7. Replace all missing, illegible, or damaged
safety and warning decals. See list of decals
in the operator's manual.
8. Do not modify or alter this equipment or any
of its components, or any equipment function
without first consulting your dealer.
9. Keep safety decals clean of dirt and grime.
10. Use of tire chains and rear counterweights is
recommended. Weights provide the
necessary balance to improve stability,
traction and steering. Use only those
recommended by your dealer.
SAFETY PRECAUTIONS - continued
OM 0182SB-A 6
SNOWBLOWER OPERATION
1. In case of a belt-driven equipment, make sure
drive belt is routed properly before operation.
2. Before leaving the tractor unattended, take all
possible precautions. Park the
tractor/snowblower on level ground, place the
transmission in neutral, set the parking brake,
disengage the driving system , lower the
equipment to the ground, place all levers in
neutral, shut off the engine and remove the
ignition key.
3. Before starting the snowblower, remove any
ice that has accumulated in the auger/fan.
4. Watch carefully for foreign objects that could
enter the blower while operating.
5. Be sure the clutch switch/lever is in OFF
position before starting engine.
6. Do not put hands or feet near rotation parts.
Keep clear of discharge opening at all times.
7. Exercise extreme caution when operating on
or crossing a gravel drive, walks, or roads.
Stay alert for hidden hazards or traffic. Do not
carry passengers.
8. Adjust collector housing height to clear gravel
or crushed rock surface.
9. Park the tractor/snowblower on level ground,
place the transmission in neutral, set the
parking brake, disengage the driving system ,
lower the equipment to the ground, shut off
the engine, remove the ignition key and allow
the rotating parts to stop BEFORE unclogging
the collector/fan housing or chute, and
making any repairs, adjustments or
inspections. Use only a 36" long piece of
wood to unclog blower.
10. If the snowblower starts to vibrate
abnormally, stop the engine immediately
and check for cause. Excessive vibration is
generally a sign of trouble.
11. Do not run the engine indoors except when
starting engine and transporting attachment
in or out of building. Carbon monoxide gas
is colorless, odorless and deadly.
12. Do not attempt to operate on steep slopes.
13. Never operate snowblower without guards,
and other safety protective devices in place.
14. Never operate snowblower near glass
enclosures, automobiles, window wells,
embankments, etc., without proper
adjustment of snow discharge angle.
15. Never operate machine at high transport
speeds on a slippery surface.
16. Use extra caution when backing up.
17. Do not direct discharge at bystanders or
animals. Ejected objects may cause injury.
18. Disengage power to auger/fan when
transporting or when not in use.
19. Never operate the snowblower without good
visibility and lighting.
20. Prolonged exposure to loud noise can
cause impairment or loss of hearing. Wear a
suitable hearing protective device such as
earmuffs or earplugs to protect against
objectionable or uncomfortable noises.
SAFETY PRECAUTIONS - continued
OM 0182SB-A 7
THE TRACTOR
General Information
1. Read the operator's manual carefully before
using tractor. Lack of operating knowledge
can lead to accidents.
2. Do not permit anyone but the operator to ride
on the tractor. There is no safe place for extra
riders.
Operating the Tractor
1. Never run the tractor engine in a closed
building without adequate ventilation, as the
exhaust fumes are very dangerous.
2. Never allow an open flame near the fuel
tank or battery.
3. Make sure the belt shield is installed when
using a belt-driven equipment and always
replace the belt shield if damaged.
4. Park the tractor/snowblower on level ground,
place the transmission in neutral, set the
parking brake, disengage the driving system
, lower the equipment to the ground, place
all levers including auxiliary control levers in
neutral, shut off the engine and remove the
ignition key BEFORE leaving the tractor.
5. Never park the tractor on a steep slope.
6. Do not attempt to operate on steep slopes.
7. Use of tire chains and rear counterweights
for better traction and stability is
recommended.
8. Always drive the tractor at speeds
compatible with safety, especially when
operating over rough ground, crossing
ditches, or when turning.
9. Handle fuel with care as it is highly
flammable.
10. Use approved fuel container.
11. Never add fuel to a running engine or a hot
engine.
12. Fill fuel tank outdoors with extreme care.
Never fill fuel tank indoors. Replace fuel cap
securely and wipe up spilled fuel.
13. Never allow anyone to operate the
snowblower until they are thoroughly familiar
with basic tractor and snowblower operation.
14. Make sure the tractor is counterweighted as
recommended by your dealer. Weights
provide the necessary balance to improve
stability, traction and steering.
15. Always make sure all snowblower
components are properly installed and
securely fastened BEFORE operation.
During Operation
1. Do not allow anyone to ride on the
tractor/snowblower at any time. There is no
safe place for passengers on this equipment.
The operator MUST sit in the tractor seat.
2. Eye and hearing protection is recommended
when operating the snowblower.
3. Operate only during daylight hours, or when
the area is well lit with bright artificial light.
4. Park the tractor/snowblower on level ground,
place the transmission in neutral, set the
parking brake, disengage the driving system ,
lower the equipment to the ground, place all
levers including auxiliary control levers in
neutral, shut off the engine and remove the
ignition key BEFORE leaving the operator’s
seat.
5. Inspect the snowblower after striking any
foreign object to assure that all snowblower
parts are safe and secure and not damaged.
SAFETY PRECAUTIONS - continued
MAINTENANCE
ALWAYS USE GENUINE PARTS WHEN
REPLACEMENT PARTS ARE REQUIRED
1. Park the tractor/snowblower on level ground,
place the transmission in neutral, set the
parking brake, disengage the driving system ,
lower the equipment to the ground, place all
levers including auxiliary control levers in
neutral, shut off the engine and remove the
ignition key and allow the rotating parts to
stop BEFORE making any snowblower
adjustments.
2. To avoid injury, do not adjust, unclog or
service the snowblower with the tractor
engine running. Making sure rotating
components have completely stopped before
leaving the operator’s seat.
3. Keep the tractor/snowblower clean. Snow
and ice build-up can lead to malfunction or
personal injury from thawing and refreezing in
garage.
4. Always wear eye protection when cleaning or
servicing the snowblower.
5. Securely support tractor or any machine
elements with stands or suitable blocking
before working underneath. Do not rely on
hydraulically supported devices for your
safety. They can settle suddenly, leak down,
or be accidentally lowered.
6. Make sure all shields and guards are
securely in place following all service,
cleaning, or repair work.
7. Do not modify or alter this equipment or any
of its components or operating functions. If
you have questions concerning modifications,
consult with your dealer.
TRANSPORT
1. If the tractor/equipment is to be driven on
public roads, it must be equipped with an
SMV (Slow Moving Vehicle) sign. Check
local traffic codes that may apply to unit
usage on public roads and highways in your
area.
2. Be alert for all other traffic when driving the
tractor/equipment on public roads or
highways.
STORAGE
Before storing the snowblower, certain precautions should be taken to protect it from
deterioration.
1. Clean the snowblower thoroughly.
2. Make all the necessary repairs.
3. Replace all safety signs that are damaged,
lost, or otherwise become illegible. If a part
to be replaced has a sign on it, obtain a new
safety sign from your dealer and install it in
the same place as on the removed part.
4. Repaint all parts from which paint has worn
or peeled.
5. Lubricate the snowblower as instructed
under "Lubrication" section.
6. When the snowblower is dry, oil all moving
parts. Apply oil liberally to all surfaces to
protect against rust.
7. Store in a dry place.
OM 0182SB-A 8
DECALS
Replace immediately if damaged
657346
657761
660988
657762
657763
OM 0182SB-A 9
2500938
2500937
657804
655683
ASSEMBLY
OM 0182SB-A
10
HITCH INSTALLATION – TRACTOR SIDE
Before installing this hitch make sure engine is off and parking brake is set.
Attaching Quick Hitch to Tractor
1. Lightly grease the deck support arm shaft
(fig.1, item 1) on the tractor.
2. Engage adaptor frame tube sockets (fig.1,
item 2) onto the tractor support arms (fig.1,
item 1) and slide on as shown in figure 2.
Continue to slide on until you can install a
hitch pin (fig.3, item 1) through the hole in
each end of the support arm shafts.
IMPORTANT: If tractor body needs to be
raised, the PTO shield must be in closed or
down position and the equipment must be in
the lowered position. The only time the PTO
shield needs to be open or raised is when
connecting or disconnecting the driveline for
the snowblower or the rotary broom.
Adjustment
Loosen the 3/4” jam nut (fig.4, item 1) or (fig.1,
item 3). Adjust the 3/4” hexagon bolt (fig.4,
item 2) until it contacts the cross-member of the
tractor frame, and securely tighten the 3/4” nut to
prevent the bolt from moving.
IMPORTANT:This adjustment is needed only
once if the same tractor and adaptor are used
together. If you plan to mix tractors and
adaptors, this adjustment will be required each
time you mount an equipment adaptor. Wiring
Figure 3
1
1
Figure 4
1
2
Figure 1
3
1
2
2
Figure 2
Figure 2
ASSEMBLY
OM 0182SB-A
11
3. Figure 5: Drill five 13/64” (5 mm) dia. holes
in the tractor: two in the forward speed
control arm and three in the body as.
4. Figure 6: Attach the toggle switch
mounting bracket (item 1) on the forward
speed control arm using two 10—24 x 1/2”
bolts and kept nut. At this time, you need to
connect the green ground wire from the
wiring harness to a bolt of the switch
mounting bracket.
5. Figure 6: Install the wiring
harness to the tractor body as
shown using three wiring clamps
(item 2), three 10— 24 x 3/8” bolts
and kept nuts.
6. Attach the toggle switch to the
mounting bracket, placing the
switch terminals toward the front
of the tractor.
7. Connect the harness red wire to the free
connector of the PTO clutch switch red
wire.
8. Complete the wiring by connecting the
wiring harness to the toggle switch and to
the actuator motor.
9. Figure 7: Check wiring diagram and
correct if necessary.
Figure 6
2 1 2
2
Figure 7
Figure 5
ASSEMBLY
OM 0182SB-A
12
SNOWBLOWER ASSEMBLY
The snowblower is assembled at the factory, however snowblower kits must be assembled. Use the
present manual and lay out all parts for assembly. Separate bolts and nuts into various sizes. After
assembly, torque all the bolts according to the Torque Specification Table enclosed at the end of the
manual. To assemble, place snowblower on a flat and leveled surface, the auger facing the ground.
Snowblower Preparation
(Figure 8)
1. Install the hand guard (item 1) on the chute,
with the top portion inside the chute and the
bottom section outside the chute base ring.
Place two 1/4" x 3/4" bolts with the head on the
outside of the chute, through the chute then
through the hand guard and secure with a flat
washer, lockwasher and nut. Tighten securely.
2. Remove the rotation support (item 2) from the
chute base lip and discard the bolt.
3. Place the plastic anti-friction ring (item 3) over
the chute base (placing marker on upper side
and towards center of fan housing). Only one
position provides a perfect fit. Apply grease on
top of this ring where it will contact the chute
base.
4. Insert the 1 5/16" (33 mm) plastic bushing
(item 4) in the tube weldment (item 5).
5. Insert the other 1 5/16" plastic bushing (item 6)
in the rotation support (item 2) and place this
over the shaft on the rotation worm (item 7).
6. Install the rotation worm assembly through the
tube weldment (item 5) with the attaching plate
of the support (item 2) on the underside of the
chute base lip.
7. Install the chute over the anti-friction ring and
secure with four retaining plates (item 8), using
two 1/4" x 1/2" bolts (item 9), lockwashers and
nuts in each of three standard retaining plates,
and two 1/4" x 3/4" bolts (item 10), lockwashers
and nuts in the rear right retaining plate, which
also secures the support (item 2). Tighten
securely.
8. Insert two 5/16" x 1" carriage bolts through
each of the skid shoes (Fig. 9, item 1) from
inside the bend. Place a flat washer,
lockwasher and nex nut loosely on each bolt
and place the bolt heads through the round
holes in the outer ends of the bottom angle
of the snowblower body. Slide the square
shank portion of the bolt head into the slot.
Tighten securely.
IMPORTANT: On asphalt roadways,
adjust the skid shoes to allow 3/16" to 1/4"
(4.5 mm to 6.5 mm) clearance between the
cutting edge and the surface. On gravel
surface, allow 1/2" to 5/8" (13 mm to 15.9 mm)
clearance, depending on the size of the
gravel.
Figure 8
Figure 9
ASSEMBLY
OM 0182SB-A
13
Attaching Blower to Tractor
(Figures 10-11-12 -13)
1. Figure 10: Remove the paint from
inside the drive shaft yoke and install a
1/4" x 1/4" x 1 1/4" key (not included) in
the reduction shaft keyway.
2. Figure 10: Slide the drive shaft yoke
(item1) over the reduction shaft.
3. Figure 10: Secure the yoke to the
reduction shaft with a 1/4" x 2 1/2" bolt
and nylon lock nut (not included).
Tighten the bolt and the 3/8" x 1/4" allen
setscrew securely over the key in the
yoke.
4. Figure 11: Hook the reduction box
cover (item 1) on the snowblower and
secure the cover with two 5/16"NC x
1/2" serrated flange bolts (item 2).
Tighten securely.
5. Figure 11: Attach the female portion of
the hitch (item 3) to the snowblower
using one 1/2" x 1 1/4" bolt in the upper
hole of each side (item 4), placing the
bolt head on the inside, then secure
with a lockwasher and nylon insert
locknut on the outside. Then use one
1/2" x 1 1/4" bolt, lockwasher and nylon
insert locknut in the bottom holes of
each side (item 4). Tighten bolts
securely.
Figure 11
Figure 10
ASSEMBLY
OM 0182SB-A
14
Figure 12
Driveline
Installation
Figure 12
Figure 13
6. Figure 12: Insert the male quick hitch
section (item 1) into the female hitch
(item 2) and lock in place by moving
lever (item 3) to lock position (fully
forward), and secure latch with linchpin.
7. Grease the drive shaft sliding surfaces
and slide the male shaft inside the
female tube.
8. Attach the driveline quick lock coupler to
the tractor PTO.
WARNING: This shaft turns at high
RPM. If the collar is not locked to the
shaft at the tractor end, or if the yoke at
the blower end is not secured properly,
the drive shaft can fly loose with great
force, capable of causing serious injury
or death.
9. Figure 12: Attach parallel bar (item 4) to
female hitch and to implement adaptor
using the two clevises and hairpins.
10. Figure 13: Insert the rotation handle
(item 1) into the rotation worm (item 3).
Align holes and lock in place with a 1/4"
x 1" hex. bolt and nylon lock nut.
11. Figure 13: Install the plastic handle
(item 2) on the chute rotation handle
(item 1).
Removing Snowblower from
Tractor (Figure 12)
1. Select a level surface, set parking brake
and remove ignition key.
2. Figure 12: Remove hairpin from parallel
bar at adaptor end, and remove parallel
bar (item 4) from implement adaptor.
3. Disconnect driveline from tractor PTO
shaft.
4. Figure 12: Remove linchpin from quick
hitch latch and place quick hitch lever
(item 3) rearward to unlock position.
5. Carefully remove quick hitch from
snowblower.
ASSEMBLY
OM 0182SB-A
15
Installation of Electric Chute Rotation Kit 9475 (Option)
(Figure 14 and Electrical diagram)
1. Insert 1 11/16" (43 mm) plastic bushing
(item 1) in rotation bracket (item 2).
2. Install the worm adaptor (item 3) on the
motor shaft and attach motor (item 4) to
electric motor support (item 2) using three
1/4" x 2" bolts, spacer rings (item 7) and 1/4"
nylon insert lock nut (item 13). Secure the
motor on shaft with two allen setscrews 1/4"
NF x 1/4" (item 8). Tighten securely.
3. Insert longest tube end of rotation worm
(item 5) over worm adaptor (item 3) and into
plastic bushing in electric motor support.
Align holes and secure with a 10-24 NC x 1"
capscrew (item 10) and a nylon lock nut
(item 11). Tighten securely.
4. Install the chute over the anti-friction ring and
place the four retaining plates (item 6).
Secure with two 1/4" x 3/4" bolts (item 14),
5/16" flat washers (item 15),
lockwashers (item 16) and nuts (item
17), in the rear left retaining plate which
also secures the electric motor support
assembly on the underside of chute
base lip. Attach the three remaining
plates with six 1/4" x 1/2" bolts,
lockwashers and nuts. Torque to 9-11
lbs-ft (12-15 N-M).
5. Drill a 1/2" (13 mm) hole in tractor for
control switch. Drill a .593" (15 mm) hole
at least 2 1/2" (63.5 mm) from control
switch hole for fuse holder. The two
holes must be drilled in an appropriate
location and must not interfere with
existing controls or electrical system.
6. Solder one 18" (457 mm) wire to side
terminal of fuse holder and the other 18"
(457 mm) wire with eyelet to bottom
terminal.
7. Install switch and fuse holder. Thread
rubber protector over switch.
8. Connect the eyelet of the 18" (457 mm)
wire to "B" terminal of control switch.
9. Connect one end of the 17" (432 mm)
wire to "E" terminal on control switch
and the other end to a suitable ground
on tractor frame.
10. Connect one end of a 5" (127 mm) wire to
"A" terminal and other end to "D" terminal
on control switch.
11. Connect one end of other 5" (127 mm) wire
to "C" terminal and other end to "F" terminal
on control switch.
12. Attach eyelet of the double wire to "A" and
"F" terminals of switch.
13. Connect fused wire to wire from tractor
ignition switch "AC" terminal using the
connector tap.
14. Connect free end of double wire to electric
motor. Cut this wire at a convenient location
for blower removal. Install the connector to
the motor half of the wire.
15. Secure wires away from moving parts using
the provided tie wraps.
Figure 9
Figure 14
Electrical Diagram
ASSEMBLY
OM 0182SB-A 16
Figure15
Electrical Diagram
Installation of Electric Deflector Kit 9370 (Option)
(Figure 15 and Electrical Diagram)
1. Remove manual adjustment knob and bolts
from sides of deflector and replace them
with two 5/16” x 3/4” carriage bolts. Secure
with the original nylon flat washers and
supplied nylon nuts. Leave approximately
1/16" (1.6 mm) play.
2. Drill two 9/32" (7mm) dia. holes in chute as
shown in figure 15.
3. Attach (item 1) the actuator to the chute with
two 1/4" x 1 1/2" (10-24 NC) shoulder
screws (item 3), two spacers (item 2), two
flat washers (item 4) on the outside and 1024 NC nylon hex. nut (item 5). Place screws
in the actuator and thread the spacers on
the screws so that the screws do not
protrude the nuts once threaded.
NOTE: Refer to Electrical diagram.
4. Solder one 18” (457 mm) wire to fuse holder
side terminal and the other 18” (457 mm)
wire with eyelet to the bottom terminal.
5. Install control switch and fuse holder.
Thread rubber protector over switch.
6. Connect eyelet of 18” (457 mm) wire to "b"
terminal of control switch.
7. Connect one end of the 17” (432 mm) wire
to "e" terminal on control switch and other
end to a suitable ground on tractor frame.
8. Connect one end of the 5” (127 mm) wire to
a terminal and other end to "d" terminal on
control switch.
9. Connect one end of other 5” (127 mm) wire
to "c" terminal and other end to "f" terminal
on control switch.
10. Attach eyelet end of the 102” (2.59 m)
double wire to "a" and "f" terminals on
control switch.
11. Connect fused wire to wire from tractor
ignition switch "AC" terminal using
connector tap.
12. Connect free end of the double wire to the
electric motor. Cut this wire at a convenient
location for blower removal. Install the wire
connectors with one male and one female
connector to the motor half of the wire.
13. Secure wires away from moving parts using
the provided tie wraps and adhesive clips.
OPERATION
OM 0182SB-A 17
GENERAL PREPARATION
1. Read this Operator's Manual carefully. Be
thoroughly familiar with the controls and
proper use of the equipment. Know how to
stop the unit and disengage the controls
quickly.
2. Make sure the snowblower is clear of snow
before engaging the driveline.
3. Make sure that the auger and fan operate
freely.
4. Make sure there is no oil leakage on worm
gearbox. Maintain proper oil level with
extreme pressure oil, AGMA 5EP or
SAE 90.
5. Adjust skid shoes so that the snowblower
runs level.
6. Wear proper winter attire when using this
equipment.
OPERATING CONTROLS
Deflector Adjustment
Adjust deflector angle according to the distance
the snow must be thrown. To adjust, loosen
the two knobs, adjust to the desired angle then
tighten knobs securely.
Engine Speed
Use only moderate engine speed when
engaging tractor PTO. Engaging at high speed
will shorten the driveline life. For maximum
power, operate the engine at or near full
throttle.
Manual Rotation
Adjust chute orientation by turning the rotation
handle.
Increasing Traction and Stability
The use of tire chains and counterweights is
recommended for extra traction and stability,
especially when operating in snow and/or on
slippery surfaces. See your dealer for details.
WARNING : To ensure safety, make sure
tractor engine and snowblower come to a
complete stop and tractor PTO is disengaged
BEFORE making any adjustments.
PTO
The snowblower is driven from the tractor PTO. It is
engaged by pulling up the tractor PTO switch. To
disengage, push down the PTO switch to the "OFF"
position.
Snowblower Pitch Adjustment
The snowblower must be installed on subframe and
leveled to the ground BEFORE making adjustment.
The snowblower pitch angle () can be adjusted by
loosening bolts (Fig. 11, items 5 and 6) of "Attaching
Blower to Tractor" section, setting the desired angle
and tightening the bolts. The pitch angle () should
be set to maximum (greater than 90).
Skid Shoes Adjustment
Adjust the snowblower so that the skid shoes run
level and according to the surface conditions so that
stones are not thrown with the snow. Adjust both
skid shoes to the same height to keep the cutting
edge level and adjust upwards for smooth surfaces.
Loosen skid shoe bolts and adjust according to
instructions below, and securely tighten bolts:
Clearance between cutting edge and surface
Level paved surface: Adjust to 1/16" to 1/8" (2 to
5 mm)
Uneven or gravel surface: Adjust to 1/2" to 5/8"
(13 to 16 mm).
OPERATION
OM 0182SB-A 18
SNOW REMOVAL METHODS
When removing snow, do not use the snowblower as a dozer blade to push snow. Let the snowblower
work its way through deep drifts. If the speed of your tractor is too fast, the snowblower may become
overloaded and clog. For best results, raise the snowblower and remove a top layer of snow. A second
pass with the snowblower will remove the remaining snow.
IMPORTANT: Use full RPM power when removing wet, sticky snow. Low RPM power will tend to clog the
chute.
WARNING: Do not use hands or feet to unclog chute. Do not attempt to clear clogged chute
of snow while tractor engine is running. If the chute clogs, disengage the drive shaft, shut off the
tractor engine, remove the ignition key, wait for all movement to stop, and then clear the snow
from the chute.
A definite pattern of operation is required to thoroughly clean the snow area. These patterns will avoid
throwing snow in unwanted places as well as eliminating a second removal of snow
Where it is possible to throw the snow to the left
and right (above), as on a long driveway, it is
advantageous to start in the middle. Plow from
one end to the other, throwing snow to both sides
without changing the direction of the discharge
guide
If the snow can only be thrown to one side of the
driveway or sidewalk (above), start on the opposite
side. At the end of the first pass, rotate the
discharge guide 180 degrees for the return pass.
At the end of each succeeding pass, rotate the
discharge guide 180 degrees to maintain direction
of throw in the same area..
MAINTENANCE
OM 0182SB-A 19
MAINTENANCE
ALWAYS USE GENUINE PARTS WHEN
REPLACEMENT PARTS ARE REQUIRED
WARNING:
Before cleaning, adjusting or repairing the
snowblower: bring the tractor to a
complete stop, lower the implement shut
off the engine and remove the ignition key.
Never park the tractor inside a building
where an open flame or sparks are
present. Allow the engine to cool down
before storing in any enclosure.
Provide adequate blocking before working
under the snowblower when in raised
position.
Drive Chain Tension Adjustment
1. Remove the driveline guard.
2. Loosen the four bolts securing the reduction
box assembly to the snowblower frame.
3. Tighten the drive chain by lowering the
reduction box assembly in order to leave a
deflection of between 1/16" and 1/8".
4. Tighten the four bolts securing reduction box
and reinstall the driveline guard.
Reduction Sprocket Removal
Thread locker was applied on all setscrews during
assembly at the factory. Apply heat before
attempting removal. When installing, apply a drop
of thread sealant on the setscrews of both the
large sprocket and the two bearing collars.
Shear Bolts
1. Always use a special grade 5 shear bolt
(656053) on fan (item 1) and grade 5 two
grooved shear bolts, silver plated (657295) on
the auger (item 2) as shown on decal
(657346) .
2. Check shear bolts at frequent intervals for
proper tightness to make sure the snowblower
is in safe working condition. Torque must be at
9 lbs-ft (12 N-M).
Auger Repositioning
After shear bolt breakage on one of the augers,
make sure to reposition the augers as shown on
the figure.
1/16
"to
1/8"
1/16
"to
1/8"
2 2 1
MAINTENANCE
OM 0182SB-A 20
LUBRICATION
Use a good grease gun and lubricate as follows:
DESCRIPTION
INTERVAL
LUBRICATION REQUIRED
Driveline
8 hours
Grease each universal joint
24 hours
Separate the sliding parts and cover each one of
them with grease
Driving chain
4 hours
and after each operation
Lubricate with chain saw lubricant
Auger
24 hours of operation
or once a year whichever
comes first
Grease fitting on each auger section
Gearbox
every month
Check oil level. If needed, add AGMA 5EP
extreme pressure oil, SAE 80W90 gear oil or
equivalent.
PARTS
INTRODUCTION
All parts are illustrated in "exploded views" which show the individual parts in their normal relationship to
each other. Reference nums are used in the illustrations. These nums correspond to those in the
"Reference Num" (REF) column, and are followed by the description and quantity required.
O/L - "Obtain Locally" in the part number column indicates common hardware that is available at your local
hardware supply.
All reference to right and left, forward or rearward, is from the operator seat facing the equipment while in
operation.
Orders must give the complete description, correct part num, the total amount required, the serial num, the
method of shipment and the shipping address.
The manufacturer reserves the rights to change, modify, or eliminate from time to time, for technical or
other reasons, certain or all data, specifications, or the product or products themselves, without any liability
or obligation.
The parts listed here are available through your local dealer.
OM 0182SB-A 21
PARTS
REF.
DESCRIPTION
QTY
PART NUMBER
1
Male quick hitch
1
660980
2
Quick hitch latch
1
657382
3
Hex. bolt 3/8” NC x 1 1/2”
1
0100040
4
Nylon lock nut 3/8” NC
1
1000006
5
Pin 1/4” dia x 1 5/8”
1
657384
6
Cotter pin 5/64" dia. x 1"
1
1500032
7
Spring plate
1
657383
8
Spring 1 657385
9
Attaching lever
1
657381
10
Plastic handle
1
656797
11
Cotter pin 1/8” dia x 1”
2
1500016
12
Flat washer 1/2" (9/16” hole) PTD
1
1400006
13
Safety chain ass'y
1
657632
MALE QUICK HITCH ASSEMBLY - 6625
OM 0182SB-A 22
23
11
MALE QUICK HITCH SYSTEM
REF.
DESCRIPTION
QTY
PART NUMBER
1
Adaptor 1 6620-27
2
Grease fitting 45.
2
5830-3
3
Hex. bolt 3/4”
1
F212
4
Jam nut 3/4”
1
F213
5
Clevis pin 2 6621-1
6
Actuator motor
1
6621
7
Pivot shaft
1
6620-17
8
Hitch 1 6620-24
9
Keps nut 10-24
1
F002
10
Keps nut 1/4-20
2
F005
11
Bolt 1/4-20 x 1/2"
2
F036
12
Decal 1 6620-29
13
PTO shield
1
6620-28
14
Bushing 1 5588
15
Actuator pivot
1
6620-16
16
Grease fitting
1
5830
17
Bolt 10-24 x 5/8"
1
F027
18
Cotter pin 4 F068
Not illustrated:
- Wiring harness
1
6622
- Toggle switch
1
6623
- Actuator boot
1
6623-1
- Bolt 10-24 x 3/8"
3
F025
- Bolt 10-24 x 1/2"
2
F026
- Harness clamp
3
5832
PARTS
OM 0182SB-A
PARTS
24
SNOWBLOWER ASSEMBLY– 6670-1 & 6671-20
OM 0182SB-A
PARTS
25
PART NUMBER
REF.
DESCRIPTION
QTY
6670-1
6671-20
1
Frame 1 669690
669692
2
Gearbox (cw)
1
4500035
4500035
Seal kit 1 665775
665775
3
Fan assembly including bushings 4300055
1
657327
657327
4
Bushing (Oilite)
2
4300055
4300055
5
Skid shoes
2
669674
669674
6
Carriage bolt 5/16" NC x 1"
4
0300003
0300003
7
Key woodruff
1
655967
655967
8
Lockwasher 5/16"
15
1200003
1200003
9
Hex. nut 5/16" NC
11
0900002
0900002
10
Auger L.H.
1
666732
666738
11
Auger R.H.
1
666731
666737
12
Shear bolt 5/16" NC x 2 1/4" w/ lock & nut, gr5, PTD
2
657295
657295
13
Bearing with set screw
2
665494
665494
14
Bearing flange
2
657334
657334
15
Hex. Bolt 5/16" NC x 3/4"
8
0100018
0100018
16
Gear box support bracket
1
657332
657332
17
Flat washer 5/16" (3/8" dia.hole) PTD
6
1400003
1400003
18
Output shaft
1
657286
660390
19
Grease fitting 1/4" NF
2
654106
654106
20
Hex. nut 5/16" NC, PTD
4
0900002
0900002
21
Bearing flange
2
656589
656589
22
Bearing with locking collar
1
665495
665495
23
Cutting edge
1
657350
659862
24
Carriage bolt 5/16" NC x 3/4"
9
0300002
0300002
25
Stover nut 5/16" NC
6
1100002
1100002
26
Shear plate
1
655874
655874
27
Shear bolt 1/4" NC x 1 1/4" w/ lock & nut gr.5 PTD gr8
1
656053
656053
28
Hex. bolt 5/16" NC x 2", gr.8 PTD
1
0100024
0100024
29
Nylon insert nut hex. 5/16"NC PTD
1
1000005
1000005
SNOWBLOWERS ASSEMBLY – 6670-1 & 6671-20
OM 0182SB-A
26
REDUCTION BOX ASSEMBLY
REF.
DESCRIPTION
QTY
CODE
Reduction box ass'y inc. bearing & sprocket
1
657353
1
Reduction box
1
657355
2
Drive shaft with sprocket (H40C11)
1
657250
3
Bearing 1" bore with set screw
2
665494
4
Bearing flange
4
656589
5
Carriage bolt 5/16"NC x 5/8"
6
0300001
6
Lockwasher 5/16", PTD
10
1200003
7
Hex. nut 5/16", PTD
10
0900002
8
Carriage bolt 5/16"NC x 3/4", PTD
4
0300002
9
Allen setscrew 5/16"NC x 5/16"
2
0500009
10
Flat washer 5/16" (3/8" hole) PTD
4
1400003
11
Key 1/4" x 1/4" x 1 1/4" (not included)
1
654643
12
Sprocket (H40B32)
1
656543
13
Key 1/4" x 1/4" x 1"
1
655379
14
Chain #40 x 38 links L.L. with connecting link
1
656570
Connecting link
1
656178
15
Serrated flange bolt 5/16"NC x 1/2", PTD
2
0200065
16
Driveline guard
1
669612
17
Hex. bolt 1/4"NC x 2" (not included)
1
0100010
18
Nylon locknut 1/4"NC (not included)
1
1000003
19
Allen setscrew 3/8"NC x1/4"
1
0500030
PARTS
OM 0182SB-A
PARTS
OM 0182SB-A
27
CHUTE WITH DEFLECTOR
REF.
DESCRIPTION
QTY
CODE
1
Chute ass'y ccw, w/ knobs & decals
1
667384
2
Knob 5/16" NC (nut included)
2
657309
3
Flat washer nylon 11/32" dia. hole
2
658467
4
Carriage bolt 5/16" NC x 1" PTD
2
0300003
5
Flat washer nylon 7/16" dia. hole
2
658468
6
Hand guard
1
657308
7
Hex. Bolt 1/4" NC x 3/4", gr5 PTD
10
0100003
8
Flat washer 1/4" (5/16" hole), PTD
2
1400002
9
Lockwasher 1/4", PTD
10
1200002
10
Hex. nut 1/4" NC PTD
10
0900001
11
Chute Rotation bushing
1
657338
12
Retaining plate
4
657333
PARTS
OM 0182SB-A
28
MANUAL CHUTE ROTATION SYSTEM
REF.
DESCRIPTION
QTY
PART NUMBER
1
Plastic bushing 1 5/16" (33 mm)
2
657335
2
Rotation worm (cw)
1
657733
3
Rotation support
1
657493
4
Rotation handle
1
661035
5
Plastic handle
1
656797
6
Hex. bolt 1/4" NC x 1"
1
0100004
7
Nylon lock nut 1/4" NC
1
1000003
29
FEMALE QUICK HITCH
PART NUMBER
REF.
DESCRIPTION
QTY
6670-1
6671-20
1
Quick hitch, female part
1
669691
669693
2
Hex. bolt 1/2" NC x 1 1/4"
4
0100069
0100069
3
Lockwasher 1/2"
4
1200006
1200006
4
Hex. nylon insert locknut 1/2" NC
4
1000011
1000011
PARTS
OM 0182SB-A
PARTS
30
REF.
DESCRIPTION
QTY
PART NUMBER
1
Quick hitch assembly, female part, for 6670-1
1
669691
2
Cotter pin 2 F068
3
Clevis pin
2
6621-1
4
Parallel bar
1
6670-2
FEMALE QUICK HITCH ASSEMBLY FOR 6670-1
OM 0182SB-A
PARTS
31
REF.
DESCRIPTION
QTY.
PART NUMBER
1
Outer shield
1
6671-1
2
Nylon bearing
1
6671-2
3
Bearing retainer
1
6671-3
4
Male shaft and yoke assembly
1
6671-4
DRIVELINE MALE PORTION ASSEMBLY 6671
OM 0182SB-A
PARTS
OM 0182SB-A
32
ELECTRIC CHUTE ROTATION KIT – 9475 (OPTION)
REF.
DESCRIPTION
QTY
PART NUMBER
1
Flat washer 4/4" (5/16"hole), PTD
2
1400002
2
Electric motor support CCW
1
664827
3
Worm adaptor
1
662459
4
Electric motor
1
662455
5
Rotation worm
1
660246
6
Retaining plate (not included in 9475 kit)
4
657333
7
Spacer ring
1
666691
8
Setscrew 1/4" NF x 1/4"
2
0500003
9
Plastic bushing 1 5/16"
2
657335
10
Socket head capscrew 10-24 NC x 1", PTD
1
0800009
11
Nylon insert lock nut 10-24 NC, PTD
1
1000002
12
Bolt hex. 1/4" NC x 2", PTD
3
0100010
13
Nylon insert lock nut 1/4" NC, PTD
3
1000003
Not illustrated:
- Wire 16GA X 5"lg 1 thread, black
2
655441
- Wire ass. 16GA X 17"lg black
1
655442
- Wire double 16GA X 102"lg
1
662468
- Wire 16GA X 18"lg ass. black
1
660692
- Wire 16GA X 18"lg 1 thread, black
1
660323
- Rubber cap for switch
1
658666
- Switch
1
658778
- Tap connector
1
656665
- Fuse 15 amp.
1
660687
- Fuse support
1
658665
9
1
PARTS
OM 0182SB-A
33
ELECTRIC DEFLECTOR – 9370 (OPTION)
REF.
DESCRIPTION
QTY
PART #
1
Support plate
1
665773
2
Spacer 2 665774
3
Actuator 1 656848
4
Shoulder screw 1/4" x 1 1/2" (10-24 NC)
2
3200010
5
Nylon hex. nut (10-24 NC)
2
1000002
6
Hex. Bolt 1/4" NC x 3/4"
2
0100003
7
Serrated flange nut 1/4" NC
2
0900058
8
Connector tap
1
656665
9
Carriage bolt 5/16" NC x 3/4" (snowblower)
2
0300002
Carriage bolt 5/16" NC x 3/4" (debris blower)
1
0300002
10
Nylon nut 5/16" NC (snowblower)
2
1000005
Nylon nut 5/16" NC (debris blower)
1
1000005
11
Stopper sleeve
1
661102
12
Connector
2
656664
13
Double wire ass'y 102"
1
660695
14
Connector female
2
657853
15
Connector male
2
655217
16
Wire ass'y 5"
2
655441
17
Wire ass'y 17"
1
655442
18
Control switch
1
658778
19
Rubber toggle protector
1
658666
20
Wire ass'y 18"
1
660692
21
Fuse holder
1
658665
22
Fuse 6 amp.
1
657285
23
Wire 16 ga x 18"
1
660323
24
Flat washer #8 (3/16" hole)
1
1400001
25
Flat washer #12 (1/4" hole)
1
1400016
PARTS
OM 0182SB-A
34
WORM GEARBOX (4500035)
REF.
DESCRIPTION
QTY
PART #
Casing kit (item 1 and 2)
1
4500021
1
Left casing
1
------
2
Right casing
1
------
Worm and gear kit (item 3 and 4)
1
Not available
3
Gear 1 ------
4
Worm 1 ------
5
Driving shaft
1
4500036
6
Bearing 2 661147
7
Bearing 2 663234
Seal kit (item 8 and 9)
1
665775
8
Seal 2 ------
9
Seal 1 ------
10
Cap 1 661150
11
Breather 1/8" NPT, 5 PSI, PTD
1
654927
12
Plug 1/8" NPT, PTD
2
656090
13
Spring pin 5/16" dia. x 1 1/4" lg.
1
663243
14
Dowel pin 3/16" dia. x 1/2" lg.
2
663245
15
Hex. bolt 5/16" NC x 2 1/2" lg., PTD
4
0100026
16
Hex. bolt 5/16" NC x 1 1/2" lg., PTD
2
0100021
17
Nylon insert locknut 5/16" NC, PTD
6
1000005
AVAILABLE EQUIPMENT
OM 0182SB-A
35
46" (1.17 m) & 60" (1.52 m)
ROTARY BROOMS
DDM
36" (.91 m) ONE STAGE
SNOWBLOWER
5600-20
DEBRIS BLOWER
6680-21
42" (1.07 m) & 50" (1.27 m)
TWO STAGE SNOWBLOWERS
6670-1
6671-20
46" (1.17 m) & 60" (1.52 m)
BLADES
6660
6661-20
6650-B
H20
TORQUE SPECIFICATION TABLE
OM 0182SB-A
36
GENERAL SPECIFICATION TABLE
Use the following torques when special torques are not given
NOTE:These values apply to fasteners as received from supplier, dry, or when lubricated with normal engine oil. They do not apply if special
graphited or moly sidulphide greases or other extreme pressure lubricants are used. This applies to both UNF and UNC threads.
BOLT HEAD
IDENTIFICATION MARKS AS
PER GRADE
NOTE: MANUFACTURING
MARKS WILL VARY.
Torque
Torque
Torque
BOLT SIZES
Pounds-Foot
Newtons-Meter
Pounds-Foot
Newtons-Meter
Pounds-Foot
Newtons-Meter
Inches
Millimeters
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
1/4
6.35
5 6 6.8
8.13 9 11.0
12.2
14.9
12
15
16.3
30.3
5/16
7.94
10
12
13.6
16.3
17
20.5
23.1
27.8
24
29
32.5
39.3
3/8
9.53
20
23
27.1
31.2
35
42.0
47.5
57.0
45
54
61.0
73.2
7/16
11.11
25
30
40.7
47.4
54
64.0
73.2
86.8
70
84
94.9
113.9
1/2
12.70
45
52
61.0
70.5
80
96.0
108.5
130.2
110
132
149.2
179.0
9/16
14.29
65
75
88.1
101.6
110
132.0
149.2
179.0
160
192
217.0
260.4
5/8
15.88
95
105
128.7
142.3
150
180
203.4
244.1
220
264
298.3
358.0
3/4
19.05
150
185
203.3
250.7
270
324
366.1
439.3
380
456
515.3
618.3
7/8
22.23
160
200
216.8
271.0
400
480
542.4
650.9
600
720
813.6
976.3
1
25.40
250
300
338.8
406.5
580
696
786.5
943.8
900
1080
1220.4
1464.5
1 1/8
25.58
- - - - 800
880
1084.8
1193.3
1280
1440
1735.7
1952.6
1 1/4
31.75
- - - - 1120
1240
1518.7
1681.4
1820
2000
2467.9
2712.0
1 3/8
34.93
- - - - 1460
1680
1979.8
2278.1
2380
2720
3227.3
3688.3
1 1/2
38.10
- - - - 1940
2200
2630.6
2983.2
3160
3560
4285.0
4827.4
METRIC BOLT TORQUE SPECIFICATIONS
Coarse thread
Fine Thread
Size of
screw
Grade No.
Pitch
(mm)
Pounds-Foot
Newtons-Meter
Pitch (mm)
Pounds-Foot
Newtons-Meter
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
M6
4T
7T
8T
1.0
3.6
5.8
7.2
5.8
9.4
10
4.9
7.9
9.8
7.9
12.7
13.6
-
-
-
-
-
-
-
-
-
-
-
-
-
M8
4T
7T
8T
1.25
7.2
17
20
14
22
26
9.8
23
27.1
19.0
29.8
35.2
1.0
12
19
22
17
27
31
16.3
25.7
29.8
23.0
36.6
42
M10
4T
7T
8T
1.5
20
34
38
25
40
46
27.1
46.1
51.5
33.9
54.2
62.3
1.25
20
35
40
29
47
52
27.1
47.4
54.2
39.3
63.7
70.5
M12
4T
7T
8T
1.75
28
51
57
34
59
66
37.9
69.1
77.2
46.1
79.9
89.4
1.25
31
56
62
41
68
75
42
75.9
84
55.6
92.1
101.6
M14
4T
7T
8T
2.0
49
81
96
56
93
109
66.4
109.8
130.1
75.9
126
147.7
1.5
52
90
107
64
106
124
70.5
122
145
86.7
143.6
168
M16
4T
7T
8T
2.0
67
116
129
77
130
145
90.8
157.2
174.8
104.3
176.2
196.5
1.5
69
120
140
83
138
158
93.5
162.6
189.7
112.5
187
214.1
M18
4T
7T
8T
2.0
88
150
175
100
168
194
119.2
203.3
237.1
136
227.6
262.9
1.5
100
177
202
117
199
231
136
239.8
273.7
158.5
269.6
313
M20
4T
7T
8T
2.5
108
186
213
130
205
249
146.3
252
288.6
176.2
277.8
337.4
1.5
132
206
246
150
242
289
178.9
279.1
333.3
203.3
327.9
391.6
WALKER MANUFACTURING CO.
5925 E. Harmony Road
Fort Collins, CO 80528
USA
Printed in Canada
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