Schiller Grounds Care STEINER SB448 User manual

MODEL :
75-70666 SNOWBLOWER-48’’ SB448
75-70667 SNOWBLOWER-54’’ SB454
Manual 4165 788
Rev. A 9-2010
4165788_en K-09

2

IMPORTANT MESSAGE
Thank you for purchasing this Schiller Grounds Care, Inc. product. You have purchased a world class product,
one of the best designed and built anywhere.
This product comes with an Owner / Operator’s Manual. The useful life and good service you receive from this
product depends to a large extent on how well you read and understand this manual. Threat this product
properly and adjust it as instructed, and it will give you many years of reliable service. This manual has been
provided to assist in the safe operation and servicing of you attachment.
See a Schiller Grounds Care, Inc. dealer for any service or parts needed. Schiller Grounds Care, Inc, service en-
sures that you continue to receive the best results possible from Schiller Grounds Care, Inc. products. You can
trust Schiller Grounds Care, Inc. replacement parts because they are manufactured with the same high precision
and quality as the original parts.
Schiller Grounds Care, Inc. designs and builds its equipment to serve many years in a safe and productive
manner. For longest life, use this product only as directed in the manual, keep it in good repair and follow safety
warnings and instructions. You’ll always be glad you did.
NOTE: All photographs and illustrations in the manual may not necessarily depict the actual models or attach-
ment, but are intended for reference only and are based on the latest product information available at the time
of publication.
Familiarize yourself fully with the safety recommendations and operating procedures before putting the machine to
use. Carefully read, understand and follow these recommendations and insist that they be followed by those who
will
use this attachment.
This manual should be kept for future reference.
Please check if you have received all the parts for your kit with the list of the bag and the list of the box.
Schiller Grounds Care, Inc.
One Bob Cat Lane
Johnson Creek, WI 53038-0469
TABLE OF CONTENTS ...............................................................................................................................PAGE
DESCRIPTION / SPECIFICATIONS .............................................................................................................2
SAFETY.........................................................................................................................................................3
SAFETY DECALS .........................................................................................................................................6
ASSEMBLY INSTRUCTIONS .......................................................................................................................7
INSTALLATION .............................................................................................................................................9
ADJUSTMENTS & REMOVAL ......................................................................................................................10
OPERATION..................................................................................................................................................11
SERVICE.......................................................................................................................................................12
TROUBLESHOOTING ..................................................................................................................................14
TORQUE SPECIFICATION TABLE...............................................................................................................16
PARTS SECTION..........................................................................................................................................17
SB448 SNOWBLOWER & CHUTE ...............................................................................................................18
SB454 SNOWBLOWER & CHUTE ...............................................................................................................22
OPTIONS ......................................................................................................................................................26

DESCRIPTION
This Snowblower is designed to facilitate clearing of large volumes of snow from sidewalks, driveways, and
small parking lots.
This is a 2-stage blower. The auger feeds the snow into the blower housing. The Snowblower is belt-driven
with a gearbox to the 15’’ open-centered auger. The hydraulic controlled chute directs the sow from side to side
with ngertip control of the auxiliary hydraulics. A heavy-duty wear edge shears snow cleanly from pavement or
height can be regulated with adjustable skid shoes.
The Snowblower mounts on all Steiner power units with quick hitch front lift and can be installed and removed
quickly.
SPECIFICATIONS
Weight: …………………………………………………………270bs. (SB448) & 306lbs. (SB454)
Overall Width: ………………………………………………...48’’ (SB448) & 58’’ (SB454)
Overall Height: ………………………………………………..42’’
Overall Length: ……………………………………………….40’’
Opening Size: …………………………………………………21’’ h x 48’’ w (SB448) & 21’’ h x 58’’ w (SB454)
Auger: ………………………………………………………… 15’’ diameter open center
Blower: …………………………………………………………14’’ diameter, 4 blades
Auger Speed: ………………………………………………….230 RPM
Blower Speed: ………………………………………………...1150 RPM
Chute: …………………………………………………………..6’’ diameter, 237 degree rotation
Height of Cut: ………………………………………………….Adjustable skid shoes 0’’ to 1-1/4’’
NOTE: Specications are subject to change without notice.
SERIAL NUMBER : ___________________________
(IF APPLICABLE)
MODEL NUMBER: ___________________________
PURCHASE DATE : ___________________________
DESCRIPTION / SPECIFICATIONS
Record your attachment serial number and purchase date in the section reserved below. Your dealer requires this
information to give you prompt, efcient service when ordering replacement parts. Use only genuine parts when
replacements are required.
If warranty repairs are required please present this registration booklet and original sales invoice to your selling
dealer for warranty service.
2

NOTICE !!!!
Unauthorized modications may present
extreme safety hazards to operators and
bystanders and could also result in product
damage.
Schiller Grounds Care, Inc. strongly warns
against, rejects and disclaims any modica-
tions, add-on accessories or product altera-
tions that are not designed, developed, tested
and approved by Schiller Grounds Care, Inc
Engineering Department. Any Schiller Grounds
Care, Inc product that is altered, modied or
changed in any manner not specically autho-
rized after original manufacture-including the
addition of “after-market” accessories by Schil-
ler Grounds Care, Inc.-will result in the Schiller
Grounds Care, Inc.
Warranty being voided.
Any and all liability for personal injury and /or
property damage caused by any unauthorized
modications, add-on accessories or products
not approved by Schiller Grounds Care, Inc.
will be considered the responsibility of the
individual(s) or company designing and/or
making such changes. Schiller Grounds Care,
Inc. will vigorously pursue full indemnication
and costs from any party responsible for such
unauthorized post-manufacture modications
and/or accessories should personal injury
and/or property damage result.
This symbol means:
ATTENTION !
BECOME ALERT!
Your safety and the safety of others is in-
volved.
Signal word denitions:
The signal words below are used to identify levels of
hazard seriousness. These words appear in this manual
and on the safety labels attached to Schiller Grounds
Care, Inc. machines. For your safety and the safety of
others, read and follow the information given with these
signal words and/or the symbols shown above. Regard-
less of the hazard be extremely careful.
DANGER Indicates an imminently
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 haz-
ardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be
used to alert against unsafe practices or property dam-
age.
CAUTION Used without the safety
alert symbol indicates a potentially
hazardous situation which, if not avoided, MAY result in
property damage.
3
SAFETY

PREPARATION:
1.Thoroughly inspect the area where the accessory
is to be used and remove door mats, all foreign
objects and the like.
2 Disengage all clutches and shift into neutral before
starting engine.
3. Do not operate the accessory without wearing
adequate winter outer garments. Avoid loose tting
clothing that can get caught in moving parts. Wear
footwear that will improve footing on slippery sur-
faces.
4. Never attempt to make any adjustments while the
engine (motor) is running (except when speci-
cally recommended by manufacturer).
5. Let the vehicle and accessory adjust to outdoor
temperatures before using.
6. Never use an accessory without proper guards,
plates, or other safety protective devices in place
7. Always make sure to wear the appropriate safety
equipment required (glasses, muffs, mask…) for
each type of product. See operation section.
8. Always make sure of having safe traction on the
vehicle by using the recommended accessories
SAFETY
Careful operation is your best insurance against an accident. Read this section carefully before operating the
vehicle and accessory. This accessory is capable of amputating hands and feet and throwing objects. Failure to
observe the following safety instructions could result in serious injury. All operators, no matter how experienced
they may be, should read this and other manuals related to the vehicle and accessory before operating. It is the
owner’s legal obligation to instruct all operators in safe operation of the accessory.
GLOSSARY:
In this manual, right and left sides are determined by
sitting on the seat of the vehicle facing forward.
In this manual, “accessories” means attachments
(snowblower, rotary broom, blade etc.) that you install
on the vehicle.
TRAINING:
1. Read this owner’s manual carefully. Be thoroughly
familiar with the controls and proper use of the
vehicle and accessory. Know how to stop the unit
and disengage the controls quickly.
2. Never allow children to operate the vehicle nor the
accessory. Never allow adults to operate the ve-
hicle nor the accessory without proper instructions.
3. No one should operate the vehicle nor the
accessory while intoxicated or while taking medi-
cation that impairs the senses or reactions.
4.Keep the area of operation clear of all people,
particularly small children and pets.
4

OPERATION:
1. Do not put hands or feet near, under or inside
rotating parts.
2. Exercise extreme caution when operating on or
crossing gravel drives, walks or roads. Stay alert
for hidden hazards or trafc. Do not carry passen-
gers.
3. After striking a foreign object, stop the engine (mo-
tor), disconnect the wire from the spark plug(s)
and keep wire away to prevent accidental starting.
Thoroughly inspect the accessory for any damage
and repair damage before restarting and using the
accessory.
4. If the unit should start to vibrate abnormally, stop
the engine (motor) and check immediately for the
cause. Vibration is generally a warning of trouble.
5. Take all possible precautions when leaving the
vehicle unattended. Disengage the power take-off,
lower the attachment, place the transmission into
neutral, set the parking brake, stop the engine and
remove the contact key.
6. Never use the accessories across the face of
slopes, go from top to bottom. Exercise extreme
caution when using equipment on slopes. Do not
attempt to clear a steep slope.
7. Never tolerate bystanders in the working zone.
Never use an accessory in the direction of by-
standers, it might throw gravel or debris that can
hurt people or damage property.
8. Never operate the accessory at high transport
speeds on slippery surfaces. Use care when
backing up.
9. Do not carry passengers.
10. Disengage power to the accessory when it is
transported or not in use.
11. Never operate the accessory without good vis-
ibility or light.
MAINTENANCE AND STORAGE
1. When cleaning, repairing or inspecting the vehicle
and accessory, make certain that all moving parts have
stopped. Disconnect wire from the spark plug(s) and
keep wire away to prevent accidental starting.
2. Check all the bolts and components at frequent
intervals to make sure that they are properly tightened.
3. Always refer to the owner’s manual when you store
the accessory and vehicle for a prolonged or an un-
specied length of time.
4. Maintain or replace safety and instruction labels, as
necessary.
5 Let the engine run for a few minutes after cleaning
snow in order to prevent the rotary parts from freezing.
5
SAFETY

REPLACE IF DECALS ARE DAMAGED SEE
PARTS BREAKDOWN FOR DECAL LOCATION
DECAL #105126
To avoid serious injury:
Keep hands, feet & clothing away from rotat-
ing auger while engine is running.
DECAL #105127
To avoid serious injury:
Keep hands out of this discharge chute while
engine is running.
DECAL #105128
To avoid injury from drive belt:
Keep hands, feet & clothing away.
Do not attempt to install or remove drive belt
without reading owner’s manual.
DECAL #105130
Before installing or using:
Locate, read and make sure to understand
all of the owner’s manual.
DECAL #105131
Refer to owner’s manual about wearing
safety glasses, ear muffs and mask. Re-
fer to owner’s manual for use of counter
weights, cat tracks and tire chains.
6
SAFETY
DECALS

Tools Required:
Wrench: 9/16, 7/16’’, 1/2’’
Ratchet
Socket 9/16’’, 7/16’’
Pliers
Axle stands
Allen key
Refer to parts breakdown section for parts
identication
Step 1
Snowblower Preparation:
1. Remove the snowblower from the shipping crate.
2. Remove the support plates from skid shoes.
Chute Installation:
1. Remove the packaging around the rotation sprock-
et (item 4).
2. Install the rotation ring (item 2) over opening (item
3) as shown and align the notches.
3. Place the chute (item 1) (facing the rear) and clip
the back over the rotation ring then turn the chute
towards the front to lock into place.
Sprocket installation:
1. Turn the rotation sprocket (item 10) and the chute
(item 11) in position as shown (Make sure the
sprocket stoppers (item 12) and the rotation stop-
per (item 13) are placed in the same position as
shown.
2. Install the four carriage bolts with four nylon lock
nuts (item 14).
3. Try turning the chute manually from one side to
the other, if the chute’s discharge opening can be
turned in the direction of the operator, the sprocket
is not properly positioned. Repeat the procedure.
7
ASSEMBLY INSTRUCTIONS

Chain installation:
1. Loosen the two hydraulic motor support bolts (item
21) and the tensioning bolt (item 22).
2. Install the chain (item 20) as shown.
3. Tighten the tensioning bolt of the hydraulic motor
and lock into place with a nylon lock nut 1/4’’.
4. Tighten the two bolts of the hydraulic motor
support.
Guard installation:
1. Install the chute rotation guards (item 30 & 31)
with the seven hex bolts 1/4’’n.c x x1/2’’ (item 32).
Drive belt installation:
1. Remove the drive pulley shield (item 40) and
install the proper drive belt for the power unit.
Model 430: 4165834
Model 235: 4165850
2. Replace shield.
Extended wings with drift cutters installation:
For the SB454 model only.
Follow the instructions in box.
8
ASSEMBLY INSTRUCTIONS

STEP 2
SNOWBLOWER INSTALLATION
INSTRUCTIONS:
For model 430 in order to prevent the snowblower
from starting without the P.T.O. being engaged in the
low position. Install hydraulic cylinder stopper (item
50) in the engaged position as shown. To do so,
remove the pin between the hydraulic cylinder (item
51) and the front lift (item 52). Install the stopper. 1.
Attach snowblower to the power unit.
2. Be sure drive belt is in place over the left hitch
arm.
3. Drive power unit into the hitch arms and latch the
quick hitch handle.
4. Stop the engine.
INSTALLATION
TO PREVENT INJURIES: STOP THE MOTOR. APPLY PARKING BRAKE. REMOVE THE IGNITION
KEY. DISCONNECT THE WIRE FROM THE SPARK PLUG(S) AND KEEP AWAY FROM SPARK
PLUG(S) TO
PREVENT ACCIDENTAL STARTING.
5. Install the drive belt and adjust drive pulley position (see adjustment section).
6. Attach the two hydraulic hoses to the quick couplers on the tractor.
NOTE: If the rotation does not match the lever operation, the hoses may be reversed.
7. Install the drive belt to the tractor. (See tractor’s manual for belt tensioning specications).
8. A weight bar with four weights is required on 4-wheel drive units whenever the snowblower is installed.
Install according to weight bar instructions
IF THE SNOWBLOWER STARTS WITHOUT ENGAGING THE P.T.O. STOP THE ENGINE. IMPROPER
TENSION.
9. For models without an electric clutch, go to a safe location, place a security barrier all around the
snowblower. Raise the snowblower to it’s highest point and then lower to it’s lowest point. If the snow-
blower starts without engaging the P.T.O., lower the drive belt tension according to the power unit
manual.
TO PREVENT INJURIES:
THE PERSON WHO INSTALLS THE DRIVE MECHANISM HAS THE RESPONSIBILITY TO MAKE SURE
THAT WHEN THE CLUTCH IS DISENGAGED THAT ALL MOVING PARTS STOP.
FOR MORE INFORMATION, DO NOT HESITATE TO CONTACT THE TECHNICAL SUPPORT.
Never use the snowblower without the belt guard.
9

Skid shoe adjustment:
.LEVEL PAVED SURFACE: Adjust skid shoes to allow
3/16” to 1/4” or 5mm to 7mm clearance (A) between
cutting edge and surface.
UNEVEN OR GRAVEL SURFACE: Adjust skid shoes
to allow 1/2” to 5/8” or 13mm to 16mm clearance (A)
between cutting edge and surface.
STEP 3
ADJUSTMENTS
Drive pulley adjustment:
NOTE: Place the tractor horizontally on a at surface.
1. For model 235:
The tractor pulley (item 60) and the snowblower pul-
ley (item 61) must be well aligned (this is to ensure
a longer life span of the belt).
For model 430:
The tractor pulley and the snowblower pulley must
slightly misaligned (about 1/16’’ to 1/8’’ (item B)).
Make sure there is no contact between the two
belts when they are in the highest position. 2. Do
the same tests as in snowblower installation sec-
tion, item 9.
If the snowblower starts and proper tension is used,
the pulleys are misaligned too much.
If at the highest position the two belts come into
contact with each other, There is not enough space
between the pulleys.
STEP 4
SNOWBLOWER REMOVAL
INSTRUCTIONS:
1. Lower the snowblower and stop engine
TO PREVENT INJURIES: STOP THE MOTOR. AP-
PLY PARKING BRAKE. REMOVE THE IGNITION
KEY.
DISCONNECT THE WIRE FROM THE SPARK PLUG
(S) AND KEEP AWAY FROM SPARK PLUG(S) TO
PREVENT ACCIDENTAL STARTING.
2. Disconnect the two hydraulic hoses and install
dust covers.
3. Remove the drive belt and release the quick
hitch. Start the engine and back out carefully.
4. Remove the four weights from the weight bar for
the 4 wheel drive unit.
5. For model 430, move the stopper into the
disengaged position.( See step 2).
10
ADJUSTMENTS & REMOVAL

OPERATION
STEP 5
OPERATIONING INSTRUCTIONS:
1. For the 430 model, put the stopper in the engaged position. (See Installation step 2).
2. Make sure the snowblower is clear of snow before engaging the snowblower.
3. Make sure that the auger and impeller operate freely.
4. Start the tractor engine
IMPORTANT: USE FULL ENGINE R.P.M. WHEN REMOVING WET OR STICKY SNOW. LOW R.P.M.
WILL TEND TO PLUG THE CHUTE.
5. Engage P.T.O. slowly and maintain engine speed at 3/4 to full throttle.
6. Low range works best for most conditions. Adjust speeds to match snow conditions. The snowblower
works best with plenty of snow being fed into the blades. In light snow (4’’ to 6’’) increase travel speed.
7. Float position may be used, but carrying some of the weight with the power unit gives better traction. May
require frequent lifting and lowering on 4-wheel drive units. If drive belts slips, adjust drive belt tension
according to power unit manual.
8. Keep the chute rotator chain tight.
9. Rotate chute using the auxiliary hydraulic control lever. Try to blow snow with the wind on windy days. 10.
Set the angle of the deector according to the distance the snow must be thrown and to prevent property
damage. To change the deector angle, loosen the two deector knobs & adjust the deector to the ap-
propriate angle and retighten the two knobs securely. If equipped with an Electric Deector Kit, use the toggle
switch for up or down deector movement.
11. When removing snow, do not use the snowblower as a dozer blade to push snow. Allow snowblower to
ingest snow at its own speed. If the speed of your tractor is too fast, the snowblower may become over-
loaded and plug. For best results, raise the snowblower and remove a top layer of snow. A second
pass with the snowblower will remove the remaining snow.
CLEARING A CLOGGED DISCHARGE CHUTE:
Hand contact with the rotating impeller inside the discharge chute is the most common cause of injury asso-
ciated with snowblowers. Never use your hand to clean out the discharge chute. To clear the chute:
1. Lower snowblower to the ground and set parking brake.
2. SHUT THE ENGINE OFF & REMOVE KEY!
3. Wait 10 seconds to be sure that all moving parts such as the impeller blades have stopped moving.
4. Disconnect wire from the spark plug(s) and keep wire away to prevent accidental starting.
5. Always use a clean-out tool of at least 36” in (1 m) length, NEVER YOUR HANDS.
ASSURE CLEAR DISTANCE IN THE DIRECTION OF THROWING SNOW. OBJECTS CAN BE PRO-
PELLED FROM BLOWER CAUSING POSSIBLE DAMAGE TO PROPERTY OR INJURY TO
BYSTANDERS.
BE ALERT! WATCH FOR BURIED OBJECTS IN THE SNOW WHICH COULD BE THROWN OR
CAUSE DAMAGE TO MACHINE.
NEVER TRAVEL AT SPEEDS THAT WOULD CAUSE DAMAGE TO THE MACHINE OR INJURY TO THE
OPERATOR IF THE MACHINE WERE TO BE STOPPED SUDDENLY BY AN IMMOVABLE OBJECT.
READ THE TRACTOR OWNER’S MANUAL CAREFULLY. BE THOROUGHLY FAMILIAR WITH THE
CONTROLS & PROPER USE OF THE ATTACHMENT. KNOW HOW TO STOP THE ATTACHMENT &
DISENGAGE THE CONTROLS QUICKLY.
11

SERVICE SCHEDULE
TO PREVENT INJURIES: STOP THE MOTOR. APPLY PARKING BRAKE. REMOVE THE IGNITION
KEY. DISCONNECT THE WIRE FROM THE SPARK PLUG(S) AND KEEP AWAY FROM SPARK
PLUG(S) TO
PREVENT ACCIDENTAL STARTING.
Daily:
-Check for any damage on the hydraulic hose. The hydraulic hose must be replaced if there is any small
damage.
-Check for any signs of loose bolts and tighten as needed. Check mounting bolts at frequent intervals for
proper tightness in order to prevent costly repairs. Make sure your snowblower is in safe working condi-
tion.
-Check chute rotation chain for excess slack.
-Check skid shoe (see installation section).
-Check from to time the wearing on the cutting edge to
make sure you do not wear out the base of the snow-
blower’s chassis. This cutting edge is reversible. All
you have to do is unscrew the bolts and turn the cut-
ting edge, reinstall and tighten the bolts securely.
50 Hours:
-Check drive belts for proper tension and signs of
cracking.
100 hours:
-Check the oil in the gear box annually. If necessary,
add AGMA 5 EP or SAE 90 oil. The gear box should
have a total of 155 ml of oil or lled to the rim of the
bolt hole when installed on the snowblower. (see
gure)
12
SERVICE

AUGERS AND FAN SHEAR BOLT REPLACEMENT
Shear bolts are to be considered a preventive measure and not an assured protection. Operator vigi-
lance is required. Thoroughly inspect the areas where the snowblower is to be used and remove all
foreign objects.
To avoid damage to the snowblower:
Use only the original shear bolts (grooved bolts).
#4165806 in bags of 10 for the augers.
#4165812 in bags of 10 for the fan.
The use of any other shear bolt will not insure any protection and may void the warranty.
IMPORTANT: IT IS VERY IMPORTANT TO REPLACE THE AUGERS IN THE SAME POSITION AS SHOWN
IN THE DRAWING BEFORE INSTALLING THE SHEAR BOLTS. ONE SIDE AUGER SHOULD BE OPPO-
SITE OF THE OTHER SIDE.
END OF SEASON STORAGE
- Clean snowblower and subframe thoroughly and repaint all parts from which paint has
worn.
- List the replacement parts that will be needed for the next season.
- Store the snowblower and the subframe in a dry place.
- Follow the instructions in the Lubrication section.
13
SERVICE

TROUBLESHOOTING
* Please refer to parts breakdown section for parts identication.
14
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
One section or both sections of the
auger stops turning.
Shear bolts are probably broken. Replace shear bolt (for identication,
see parts list “Snowblower”).
Fan stops turning. Shear bolt is probably broken. Replace shear bolt (for identication,
see parts list “Snowblower”).
Snowblower stops turning. One of the two belts is probably
damaged or broken. Check both belts and replace dam-
aged belt(s) (for instructions, see
Maintenance section, Installation,
Adjustment and Replacement section).
Snowblower belt has burn marks in
specic places or the belt slips.
Lack of tension on belt.
Snowblower engaged when
plugged.
Remove the bolt, sleeve and the
spring from the original hole (item A)
and reinstall them in the lower hole
(item B).
Make sure the auger & the fan are not
frozen or plugged before engaging.
Chute plugs easily. Tractor engine turning too slowly.
Advancing too quickly with tractor.
Run engine at full throttle during
snowblowing operation.
Allow snowblower to ingest snow at its
own speed.
Chute rotation is difcult. Dirt or ice may be underneath
chute.
Dismount chute (see installation sec-
tion). Clean the base of chute and the
rotation ring. Lubricate & re-install.

15
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION
Snowblower digs into ground. Ground is not frozen or too soft. Adjust skid shoes lower so they may
better support the snowblower.
Snowblower vibrates or is abnor-
mally noisy.
Damaged pulley.
Damaged bearing.
Damaged fan.
Damaged auger.
Replace pulley.
Replace bearing.
Dismount & repair or replace fan.
Replace auger.
Snowblower starts without the PTO
engaged on model 430
Too much tension on the drive belt. Lower the tension on the tractor’s
tensionner. See tractor’s manual for
tensioning instructions.
Drive belt has burn marks in specic
places or belt slips.
Lack of tension on the belt. See tractor’s manual for tensioning
instructions.

TORQUE SPECIFICATION TABLE
GENERAL TORQUE 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 oil. They do not apply if
special graphited or moly disulphide greases or other extreme pressure lubricants are used. This applies to both UNF and UNC
threads.
*Thick nuts must be used with grade 8 bolts
16
SEE Grade No. 2 5 8 *
BOLT HEAD
IDENTIFICATION
MARKS AS PER GRADE
NOTE MANUFACTURING
TORQUE TORQUE TORQUE
BOLT SIZE POUNDS FEET NEWTON-METERS POUNDS FEET NEWTON-METERS POUNDS FEET NEWTON-METERS
Inches
Millimetre Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Max. Min. Max. Max.
1/4”
6.35 5 6 6.8 8.13 9 11 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 47.5 57 45 54 61 73.2
7/16”
11.11 30 35 40.7 47.4 54 64 73.2 86.8 70 84 94.9 113.9
1/2”
12.7 45 52 61 70.5 80 96 108.5 130.2 110 132 149.2 179
9/16”
14.29 65 75 88.1 101.6 110 132 149.2 179 160 192 217 260.4
5/8”
15.88 95 105 128.7 142.3 150 180 203.4 244.1 220 264 298.3 358
3/4”
19.05 150 185 203.3 250.7 270 324 366.1 439.3 380 456 515.3 618.3
7/8”
22.23 160 200 216.8 271 400 480 542.4 650.9 600 720 813.6 976.3
1”
25.4 250 300 338.8 406.5 580 696 786.5 943.8 900 1080 1220.4 1464.5
METRIC BOLT TORQUE SPECIFICATIONS
COARSE THREAD FINE THREAD
Size Screw Grade No. Pitch (mm) Pounds Feet Newton-Meters Pitch (mm) Pounds Feet Newton-Meters
M6 4T 1.00 3.6 - 5.8 4.9 - 7.9 - - -
7T 5.8 - 9.4 7.9 - 12.7 - -
8T 7.2 - 10 9.8 - 13.6 - -
M8 4T 1.25 7.2 - 14 9.8 - 19 1.00 12 - 17 16.3 - 23
7T 17 - 22 23 - 29.8 19 - 27 25.7 - 36.6
8T 20 - 26 27.1 - 35.2 22 - 31 29.8 - 42
M10 4T 1.50 20 - 25 27.1 - 33.9 1.25 20 - 29 27.1 - 39.3
7T 34 - 40 46.1 - 54.2 35 - 47 47.4 - 63.7
8T 38 - 46 51.5 - 62.3 40 - 52 54.2 - 70.5
M12 4T 1.75 28 - 34 37.9 - 46.1 1.25 31 - 41 42 - 55.6
7T 51 - 59 69.1 - 79.9 56 - 68 75.9 - 92.1
8T 57 - 66 77.2 - 89.4 62 - 75 84 - 101.6
M14 4T 2.00 49 - 56 66.4 - 75.9 1.50 52 - 64 70.5 - 86.7
7T 81 - 93 109.8 - 126 90 - 106 122 - 143.6
8T 96 - 109 130.1 - 147.7 107 - 124 145 - 168
M16 4T 2.00 67 - 77 90.8 - 104.3 1.50 69 - 83 93.5 - 112.5
7T 116 - 130 157.2 - 176.2 120 - 138 162.6 - 187
8T 129 - 145 174.8 - 196.5 140 - 158 189.7 - 214.1
M18 4T 2.00 88 - 100 119.2 - 136 1.50 100 - 117 136 - 158.5
7T 150 - 168 203.3 - 227.6 177 - 199 239.8 - 269.6
8T 175 - 194 237.1 - 262.9 202 - 231 273.7 - 313
M20 4T 2.50 108 - 130 146.3 - 176.2 1.50 132 - 150 178.9 - 203.3
7T 186 - 205 252 - 277.8 206 - 242 279.1 - 327.9
8T 213 - 249 288.6 - 337.4 246 - 289 333.3 - 391.6

PARTS SECTION
PARTS SECTION
17

PARTS BREAKDOWN
SB448 SNOWBLOWER
18