Little Wonder Optimax 9270-12-01 Programming manual

OPERATORS / PARTS MANUAL
MAN 4166799 Rev. A 07-2011 Original Language Instructions
Owners Manual and Safety Instructions for
OPTIMAX BLOWER
9270-12-01
GX270 HONDA SP
9270-13-01
EX270 SUBARU SP
9390-12-01
GX390 HONDA SP
9400-13-01
EX400 SUBARU SP
9570-14-01
570 VANGUARD SP
MODELS:
Self Propelled Maximum Output Blower

CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some
of its constituents are known to the
State of California to cause cancer,
birth defects and other reproductive
harm.
WARNING
The engine exhaust from this product
containschemicalsknowntotheState
of California to cause cancer, birth
defects or other reproductive harm.
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals, wiring
insulation, and related accessories
contain lead and lead compounds,
chemicals known to the State of
California to cause cancer and birth
defects or other reproductive harm.
WASH HANDS AFTER HANDLING.

3
LITTLE
WONDER
BLOWER
IMPORTANT MESSAGE
On behalf of everyone at Little Wonder, we would like to thank you for your purchase of a Little Wonder Gasoline
Powered Optimax Blower. This professional blower was designed to the highest standards to ensure you many
hours of uninterrupted service.
This manual provides the information necessary for safe and efcient operation and service. For your safety, it
is critically important that you read and understand this entire manual before operating your blower.
LITTLE WONDER
SCHILLER GROUNDS CARE, INC.
1028 STREET ROAD, P.O. BOX 38
SOUTHAMPTON, PA 18966
7-2011
TABLE OF CONTENTS FIGURES PAGE
SAFETY.........................................................................................................................................................4-8
SET UP INSTRUCTIONS............................................................................................................................9-10
CONTROLS....................................................................................................................................................11
OPERATION / MAINTENANCE .....................................................................................................................12
ADJUSTMENTS.............................................................................................................................................13
STORAGE / TORQUE SPECIFICATIONS .....................................................................................................14
INTAKE GUARD ASSY .......................................FIGURE 1 .........................................................................15
ENGINE ASSY ....................................................FIGURE 2 .........................................................................16
HOUSING ASSY .................................................FIGURE 3 .........................................................................17
WARRANTY ............................................................................................................................... BACK COVER
MANY USES:
The extreme versatility offered by Little Wonder’s line of blowers makes them ideally suited for a wide variety
of jobs; blowing leaves, grass clippings, thatch, blowing tennis courts dry, cleaning large driveways, stadiums,
parking lots and other hard surfaces, precleaning roofs before repair and countless other jobs.
This Operator’s Manual is part of the machine. Suppliers of both new and second-
hand machines must make sure that this manual is provided with the machine.

4
LITTLE
WONDER
BLOWER
MODEL NUMBER: This number appears on
sales literature, technical manuals and price lists.
SERIAL NUMBER: This number appears only
on your unit. It contains the model number fol-
lowed consecutively by the serial number. Use
this number when ordering parts or seeking war-
ranty information.
Schiller Grounds Care, Inc.
1028 Street Road
Southampton, PA 18966 U.S.A
Phone: [phone]
Fax: [phone]
MODEL NUMBER
SERIAL NUMBER
SAFETY
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cations, add-on
accessories or product alterations that are not
designed,developed,testedandapprovedbySchiller
Grounds Care, Inc. Engineering Department. Any
Schiller Grounds Care, Inc. product that is altered,
modied or changed in any manner not specically
authorized after original manufacture-including the
additionof“after-market”accessoriesorcomponent
parts not specically approved by Schiller 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 indemnification 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 involved.
Signal word denitions:
The signal words below are used to identify levels
of hazard seriousness. These words appear in this
manualandonthesafetylabelsattachedtoSchiller
Grounds Care, Inc. machines. For your safety and
thesafetyofothers,readand followtheinformation
given with these signal words and/or the symbol
shown above.
DANGER indicates an imminently hazardous
situationwhich, ifnot avoided,WILLresult indeath
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,ifnotavoided,MAY resultinminorormoderate
injury. It may also be used to alert against unsafe
practices or property damage.
CAUTION used without the safety alert symbol
indicates a potentially hazardous situation which, if
not avoided, MAY result in property damage.

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LITTLE
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SAFETY
SITE PREPARATION AND CIRCUMSTANCES
– Evaluate the terrain to determine how to safely
perform the job. Only use accessories and
attachments approved by the manufacturer.
– Be sure the area is clear of pets and people,
especially young children. Never assume they
will remain where you last saw them. Stop the
machine if any enter the area.
MACHINE PREPARATION
Operator preparation and training
Read the Operation & Safety
Manual
– If an operator or mechanic
cannot read English, it is
the owner's responsibility
to explain this material to
them. If any portion of
this material is unclear,
contact your factory
representative for clarication.
– Become familiar with the safe operation of the
equipment, operator controls and safety signs.
Be prepared to stop the engine quickly in an
emergency. Do not operate or allow another
person to operate this machine if there are any
questions about safety.
– All operators and mechanics should be trained.
The owner is responsible for training the users.
– Wear appropriate clothing, including safety
goggles or safety glasses with side shields when
operating. Wear substantial footwear. Do not
operate barefoot or wearing open sandals. Long
hair, loose clothing or jewelry may get tangled in
moving parts.
– Wear appropriate hearing protection.
_ Wear dust mask to avoid breathing dust.
– Wear safety glasses.
– Never allow children, unskilled or improperly
trained people to operate this equipment. Local
regulations can restrict the age of the operator.
– Keep warning labels and this operator's manual
legible and intact. Replacement labels and
manuals are available from the factory.
– Do not operate machine while under the
inuence of drugs or alcohol, or any other
condition of impairment.
– The owner/user can prevent and is responsible
for accidents or injuries occurring to themselves,
other people or property.
MULTIPLE OPERATORS
– Keep a safe distance between operators when
working together.
MACHINE PREPARATION
– Do not tamper with or defeat safety devices.
Keep guards, shields and interlock safety devices
in place and in proper working condition. They
are for your protection.
– Keep all fasteners such as nuts, bolts and pins
well secured.
– Verify that machine and attachments, if any, are
in good operating condition.

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LITTLE
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OPERATING SAFELY
IN GENERAL
– Use extra care when loading or unloading the
machine into a trailer or truck.
– Do not run the engine in an enclosed area where
dangerous carbon monoxide fumes can collect.
– Never leave a running machine unattended.
Always stop engine when leaving the operator
position.
– Do not blow towards people, cars, windows, or
other items which could be injured or damaged
by the blown debris.
– Keep hands away from the blower air intake and
outlet.
STARTING
– Start according to instructions in this manual or
on the machine.
– Do not change engine governor settings or
overspeed the engine. Operating the engine
at excessive speed can increase the hazard of
personal injury.
– Use extreme caution when reversing.
INTERRUPTING OPERATION
- Before leaving the operator's position:
- Park on level ground.
- Release the traction drive bail.
- Shut off the engine.
- Stop the engine, and wait until the fan stops
moving:
- before refueling;
- Stop the engine, and disconnect the spark plug
wire(s):
- before clearing blockages;
- before checking, cleaning or working on the
machine;
- if the machine begins to vibrate abnormally:
shut off machine immediately. Inspect
and have repairs made as needed before
restarting;
- except for repairs or adjustments as specically
noted, such as for carburetor adjustment,
where the engine must be running. Keep
hands and feet clear of moving parts in these
circumstances.
- Allow the fan to come to a complete stop when
stopping operation to clear blockages, unclog,
inspect the machine, do maintenance or repair.
- Reduce the throttle setting during engine shut-
down and, if the engine is provided with a shut-
off valve, turn the fuel off at the conclusion of
operation.
OPERATING ON SLOPES
USE EXTRA CARE WHEN OPERATING ON SLOPES.
EVALUATE THE RISKS INVOLVED BEFORE OPER-
ATING ON A SLOPE
.
- Slopes are a major factor related to slip and fall
accidents that sometimes lead to severe injury or
death. All slopes require extra caution.
- Do not operate on slopes if uneasy or uncertain.
Ultimate responsibility for safe operation on slopes
rests with the operator.
- Donotoperateonsteepslopes. Poorfootingcould
cause a slip and fall accident.
- Keep all movement on slopes slow and gradual.
- Do not operate near drop-offs, ditches or embank-
ments. You could lose your footing or balance or
drive the machine off the edge.
- Do not turn on slopes unless necessary, and then
turn slowly and downhill when possible.
- Be sure of your footing on slopes.
- Watch for holes, ruts, bumps, rocks and other hid-
den objects. Uneven terrain could cause a slip and
fall accident. Tall grass can hide objects.
SAFETY

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LITTLE
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Fuel
- Gasoline (petrol)) and die-
sel fuels are ammable;
gasoline (petrol) vapors
are explosive. Use extra
care when handling.
- Store only in containers
specically designed for
fuel.
MAINTENANCE SAFETY
In general
- Maintain machine according to manufacturer's
schedule and instructions for maximum safety
and best results.
- Park machine on level ground.
- Never allow untrained personnel to service ma-
chine.
- Guards should only be removed by a qualied
technician for maintenance or service.
- Adjust or repair only after the engine has been
stopped and the fan has stopped moving.
- Disconnect spark plug wire(s) before doing any
maintenance.
- Replace parts if worn, damaged or faulty.
For best results, always replace with parts
recommended by the manufacturer.
- Do not dismantle the machine without releasing
or restraining forces which may cause parts to
move suddenly.
- Provide adequate support, e.g. jack stands for
lifted machine or parts if working beneath.
- Do not put hands or feet near or under rotating
parts.
- Clean up spilled oil or fuel thoroughly.
- Replace faulty mufers.
- To reduce re hazards, keep the engine, muf-
er, and fuel storage area free of grass, leaves,
debris buildup or grease.
WARNING
Fans
Do not straighten or weld fans. Replace dam-
aged or failed fans..
- When refueling or checking fuel level:
- Stop the engine and allow to cool;
- Do not smoke;
- Refuel outdoors only;
- Use a funnel;
- Do not overll;
- If fuel is spilled, do not attempt to start the
engine until the spill is cleaned up and vapors
have cleared.
- Replace caps on fuel containers and tanks
securely.
Sparks from static electricity can start res or
cause explosions. Flowing fuel can generate static
electricity. To prevent static electricity sparks:
- Keep containers electrically grounded. Do not ll
containers in a vehicle or on a truck or trailer bed
with a plastic liner. Fill containers on the ground
away from the vehicle.
- When practical, remove petrol (gasoline)
powered equipment from the truck or trailer
and refuel it on the ground. If equipment must
be refueled on the truck or trailer, refuel from
a portable container rather than a dispenser
nozzle.
- Keep the dispenser nozzle in contact with the rim
of the fuel tank or container opening until fueling
is complete. Do not use a nozzle lock-open
device.
- If fuel is spilled on clothing change it immediately.
STORAGE SAFETY
- Stop the engine and allow to cool before storing.
- Drain the fuel tank outdoors only.
- Store fuel in an approved container in a cool, dry
place.
- Keep the machine and fuel containers in a locked
storage place to prevent tampering and to keep
children from playing with them.
- Do not store the machine or fuel container near an
open ame, spark, or appliance, such as a water
heater, or a pilot light.
- Keep petrol (gasoline) storage area free of grass,
leaves and excessive grease to reduce re haz-
ard.
- Clean grass and debris from cutting units, drives,
mufers and engine to help prevent res.
SAFETY

8
LITTLE
WONDER
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SAFETY
SAFETY DECALS
An important part of the safety system incorporated in this blower are the warning labels found on the blower.
Replace labels if damaged or illegible.
-Read and understand Operator
manual and labels.
-Wear hearing and eye protection.
-Replace labels and Operator
manual if lost or damaged.
BEFORE STARTING:
WARNING
-Lea y entienda el manual del
operador y las etiquetas.
-Pide que alguien lea y explique el
manual y las etiquetas a usted si
usted no lee Inglés.
-Use protección ocular y auditiva.
-No haga funcionar sin los
protectores en su lugar.
-Pare el motor antes de dar servicio
-La gente a más durante la
operación.
4165977
ADVERTENCIA
Antes de comenzar:
WARNING
Thrown objects
-Keep bystanders away.
-Do not blow toward people or pets.
-Do not blow toward items that may
be damaged by flying debris.
-Keep hands and feet away.
-Stop engine and remove spark plug
wire before servicing.
-Do not operate without guards in
place.
Fan blades can cut/crush.
DANGER
4165975
4165913
D
E
F
L
E
C
T
O
R
R
N
F
4166816

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LITTLE
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FIGURE 4
FIGURE 2
FIGURE 1
SET-UP INSTRUCTIONS
SET-UP INSTRUCTIONS
1. Open box. Remove upper handle and cardboard
insert.
2. Cut the back of the box open. Use lower handle to
roll unit out of the box.
3. Locate hardware package.
4. Install upper handle to lower handle with (4) 3/8-16
x 1-34 carriage bolts and (4) 3/8-16 anged nylon
insert nuts from the hardware package. Tighten
the nuts securely but not so much as to crush the
tube. (Figure 1) NOTE: There are two handle height
positions to choose from.
5. Route the throttle cable in front of lower handle
crossbar. Install to the left side of the upper handle
with (2) 10-32 x ½ thread forming screws from the
hardware package. (Figure 2)
6. Ensure the center link of the chain is on the center
tooth of the deector sprocket before connecting the
deector cable. (Figure 3)
7. Route the deector cable in front of the lower handle
cross bar. Remove one of the nuts and the bolts
from the end of the deector cable and install the
cable through the key slot into the bracket on the
upper handle and reinstall nut and bolt. Move the
clevis from the control lever and install over the end
of the cable. Reconnect the clevis to the control lever
with a ¼ x 5/8 clevis pin and hairpin cotter. (Note:
The deector can be moved and held in place with
the locking knob to help connect the clevis tting
to the control lever. Move the control lever to the
rear to more easily connect the cable. Loosen the
knob so the deector moves freely after the clevis is
connected.) (Figure 4)
FIGURE 3

10
LITTLE
WONDER
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FIGURE 5
FIGURE 6
FIGURE 7
FIGURE 8
8. Move the deector control lever to the front of the
slot. Adjust the jam nuts on the cable tting so
the deector is completely closed. Lock the nuts
against the bracket when the adjustment is correct.
9. Secure the throttle and deector cables to the
handle tubes with cable ties from the hardware
package. Trim off excess. (Figure 5)
10. Move the speed control lever Aall the way
forward. Turn the vertical rod Binto the swivel Con
the speed control. Pull up on the rod Bto move the
speed control to its forward stop. Turn the rod in or
out of the swivel unit it just goes into the pivot plate
E. (Use the lower pivot plate hole for the upper
handle position.) Secure the rod B to the pivot
plate E with two hairpin cotters. (Figure 6 & 7)
11. Route the clutch cable up the front of the right
handle tube and around the outside of the handle.
Route as shown in Figure 6 and install the snap
retainer Din the hole in the speed control bracket.
(Figure 6) Lift the clutch bail to get sufcient slack
to connect the Z-bend on the end of the clutch to
the clutch bail. (If sufcient slack is not available,
the bail may be squeezed together and removed
from the handle to connect the Z-bend then
reinstall. (Figure 8)
12. Secure the clutch cable to the speed control
bracket and handle tube with cable ties as shown
(Figure 6)
10. Fill the engine with oil to the level indicated on the
dipstick. Fill the fuel tank with clean, fresh regular
grade unleaded gasoline.
SET-UP INSTRUCTIONS

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SWITCH (A)
Move to the “OFF” position to stop the engine. Move
to the “ON” position before starting engine.
THROTTLE (B)
Controls engine speed and the amount of air being
blown.
CHOKE (C)
Move to the “CHOKE” position to apply the choke.
Move to the “RUN” position to remove the choke.
FUEL SHUT OFF (D)
Move to the “OFF” position to shut off the fuel
whenever transporting the machine by trailer or truck
or during storage. Move to the “ON” position before
starting the engine.
REMOTE HORIZONTAL DEFLECTOR LEVER (E)
Move the lever forward to direct the ow of air down.
Move the lever back to direct the ow of air up.
LOCKING KNOB (F)
Tighten the knob to lock the horizontal deector in the
desired position. Loosen to allow the deector to be
rotated with remote horizontal deector lever.
VERTICAL DEFLECTOR (J)
Rotate the deector to direct air discharge forward or
to the side.
HORIZONTAL DEFLECTOR (H)
Directs air ow. Controlled by Remote Horizontal
Deector Lever E. May be locked in place with
knob F.
SPEED / DIRECTION CONTROL LEVER (K)
Sets the speed and direction of the traction drive.
Move forward from the neutral position for increasing
forward speed. Move rearward from the neutral
position for increasing reverse speed.
TRACTION CLUTCH BAIL (G)
Move the traction clutch bail towards the handle
to engage the traction drive. Release the bail to
disengage the traction drive.
CONTROLS

12
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OPERATION
BEFORE STARTING THE ENGINE
1. Read the Operator Manual and Engine Manual.
Become familiar with the controls, how each func-
tions, and what it operates.
2. Check the engine oil level and add if necessary.
3 Fill the fuel tank with good quality, clean, unleaded
regular gasoline (petrol). Use a funnel to avoid
spilling.
OPERATING INSTRUCTIONS
Air ow can be directed to the side or front by the
two-position vertical deector. The front discharge
position is used to remove debris from along walls,
fences, etc. The side discharge position is used to
form windrows or piles. The horizontal deector
directs air downward to “chisel” under wet, heavy
leaves and litter. Air speed is regulated by the
throttle setting.
To reduce windrowing or to blow over an obstacle,
point deector upward.
To avoid blowing in an area, close deector and
reduce throttle setting.
Slight changes in deector position will have a big
effect on air ow. Experiment until you nd the best
position for your needs.
When clearing a yard or parking lot, planning how to
blow it off can greatly reduce the total clearing time.
To operate the machine, select the desired speed
with the speed/direction lever. Gradually engage the
clutch bail until the machine begins to move. Con-
tinue to move the bail until it contacts the handle.
To stop the machine’s powered movement, release
the bail.
Use the speed selector to change speeds.
-Do not “feather” or partially engage the clutch to
slow speed. Doing so will rapidly wear the drive disc.
Change the setting of the speed/direction lever to
vary speed.
-The speed/direction lever may be moved while the
clutch bail is engaged. However, it will operate more
easily if it is moved while the clutch bail is released,
particularly if going from forward to reverse.
Curbs may be climbed by backing up the curb at an
angle or by tipping the machine back and driving the
front wheel over the curb. The back may then be lifted
and the machine pushed forward onto the curb.
To stop the engine, move the throttle control to the
slow position and switch the engine off.
Slow the engine when moving from work site to work
site. This will save fuel and prevent inadvertently
blowing debris where you don’t want to.
NOTE: When transporting the machine by truck or
trailer, close the fuel valve. This avoids the possibil-
ity of ooding should any dirt get under the carburetor
oat needle. Leaving the valve open can allow severe
ooding which may ruin the engine by diluting the oil.

13
LITTLE
WONDER
BLOWER
FIGURE 1
FIGURE 2
MAINTENANCE INSTRUCTIONS
Stop engine and remove the spark plug wire before
performing any maintenance.
Keep blower air intake clear of debris for best
performance.
Clear air discharge area of any debris accumulation.
Ensure machine has been shut off and fan is no longer
moving before clearing.
Keep all hardware tight.
Check oil level daily. Top off as needed.
Change engine oil after the rst 5 hours of operation.
Then change as recommended by the engine
manufacturer.
1. Remove drain plug and drain oil while engine is
warm.
2. Replace drain plug, remove ll plug and ll with
new oil. See engine manual for oil specications.
3. Start and run engine for 30 seconds. Stop engine.
4. Wait 30 seconds, then re-check oil level.
5. Top off if necessary. See engine manual for
details.
MAINTENANCE
Lubricate chains every 40 hours or weekly, whichever
comes rst. Use a teon containing chain lubricant
such as bicycle chain lube that does not attract
dirt. Bicycle chain lube is available at any bicycle
shop or most places where bicycles are sold. Slots
Aare provided in the chain covers to allow chain
lubrication. Keeping the chains lubricated will greatly
extend the like of both the chains and the sprockets.
(Figure 1)
Lubricate the hex shaft/trunnion assembly once
a season or if moving the speed/direction lever
becomes difcult. A teon containing lubricant such
as bicycle chain lube is recommended. To lubricate
the hex shaft the bottom cover must be removed and
the unit tipped up and to the right until it rests on the
housing. The bottom cover is held by two nuts on the
rear of the unit. (Figure 2)
Take care not to get any lubricant on either the drive
or the driven disc. Any lubrication on these parts
will cause slipping of the friction drive. Clean off any
lubricant that gets on the drive or driven parts.

14
LITTLE
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DEFLECTOR LEVER
If the horizontal deector door during operation, tighten
the deector lever pivot bolt to increase the tension on
the friction washers. just enough to keep the deec-
tor in place. DO NOT over tighten, the handle tube
could crush.
HORIZONTAL DEFLECTOR
Adjust the jam nuts on the cable tting so the deector
door is completely closed when the deector lever is
moved all the way forward. (Figure 1)
DEFLECTOR CHAIN
The sprocket needs to be installed on the deec-
tor as shown. The chain consists of 2 master links,
6 roller links, and 5 pin links. The middle pin link
should be over the center tooth of the sprocket.
(Figure 2)
If large amounts of adjustment are required, the
chain can be moved one pitch on the sprocket to
gain 1/2” of adjustment.
FIGURE 1
FIGURE 2
ADJUSTMENTS

15
LITTLE
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FIGURE 4
ADJUSTMENTS
SPEED / DIRECTION CONTROL LEVER
If the speed/direction control lever moves during opera-
tions, tighten the s pivot bolt just enough to increase the
tension on the friction washers to keep in place. DO
NOT over tighten, the handle could crush.
VERTICAL SPEED CONTROL ROD
Disconnect the speed control rod Bfrom the pivot plate.
Move the speed control lever all the way forward. Pull
up on the rod Bto move the linkage against the forward
stop. Turn the rod in or out of the swivel Cuntil it just
goes into the pivot plate E. (Use the lower pivot plate
hole for the upper handle position.) Secure the rod to
the pivot plate E with two hairpin cotters. (Figure 3)
HANDLE HEIGHT
Two handle height positions are provided. To move
from one to the other, disconnect the speed/direction
rod, then remove the four handle bolts. Reposition the
handle to the other set of holes and reinstall the handle
bolts. Adjust the vertical speed control rod to the new
positions Reconnect the speed/direction rod. (Figure 4)
WHEEL CHAIN TENSION
If the wheel drive chain becomes too slack, the tension
needs to be increased or it can run off the sprockets.
To adjust the tension, tip the machine to the right until
it rests on the blower housing. Then loosen the nuts
Aon the carriage bolts securing the chain adjuster
brackets on each side. Leave the center pivot bolt B
tight. Once the carriage bolts are loose, support the
rear of the machine with the wheels off the ground and
move the adjuster brackets until the chain has 1/16” to
1/8” droop on the slack side with the other side tight.
Both adjusters should be in about the same position.
Tighten the nuts on the carriage bolts. If there is no
more adjustment or the 2 sides are not in about the
same position, replace the wheel chains. See wheel
chain replacement. (Figure 5)
FIGURE 3
A
A
B
WHEEL
FIGURE 5

16
LITTLE
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ENGINE- DRIVE DISC BELT
1. Remove front cover and fan from blower.
2. Move the deector control lever all the way back.
Disconnect the deector return spring from the
housing.
3. Remove blower housing from engine and engine
deck.
4. Disconnect master links connecting drive disk
mount to clutch shaft.
5. Remove nut holding drive disc to pivot pulley.
6. Remove the old belt. Check the idler pulley and
drive disks. If there is any question about their
condition, replace them.
7. Route the new belt around the drive disk pulley,
engine pulley and the idler pulley as shown. (Figure
1)
8. Reassemble in reverse order.
9. Use blue thread locking compound when installing
the housing to engine face bolts. Torque to 22-28
ft. lbs.
10. Use red thread locking compound when installing
the fan bolt.
Torque: 3/8-24 torque 30-50 ft. lbs.
7/16-20 torque 50-90 ft lbs.
1ST STAGE REDUCTION BELT
Figure 2
1. Remove the wheel chain covers and wheel chains.
2. Remove the hex shaft per the Driven Disc
Replacement section. If the driven disc is worn
replace it.
3. Remove the drive wheels and axle.
4. Use the master link to disconnect the differential
chain. Remove the differential chain.
5. Loosen and back off the setscrews Aon the
bearing adaptor on the sprocket end of the
intermediate shaft.
6. Remove the mounting bolts Bfor the bearing on
the pulley end of the intermediate shaft.
7. Slide the shaft Cinto the sprocket end bearing
D. Work the old belt off between the pulley end
bearing and the engine deck.
8. Inspect the chain, sprockets, and bearings.
Replace worn parts.
9. Install the new belt between the bearing and engine
deck.
10. Reinstall in reverse order. Be sure to put the belt
around the hex shaft and axle before installing
them. Check the installation for alignment of the
pulleys. Install the axle between the trunnion anti-
rotation tabs E.
BELT REPLACEMENT
IDLER PULLEY
DRIVE DISC BELT
ENGINE PULLEY
DRIVE DISC MOUNT
MASTER LINK
CLUTCH SHAFT
DRIVE DISC PULLEY
Figure 1
A B
C
D
E
Figure 2

17
LITTLE
WONDER
BLOWER
DIFFERENTIAL CHAIN
If this chain is worn or becomes too slack it must be
replaced. There is no adjustment.
1. Remove the bottom cover.
2. Find and remove the master link.
3. Remove the old chain. Check the sprockets for
wear. Replace if visibly worn.
4. Install the new chain with a new master link.
Lubricate with teon based chain lubricant, such as
bicycle chain lube.
5. Reinstall the bottom cover.
CHAIN REPLACEMENT
WHEEL CHAINS
If there is no more adjustment, the wheel chains need to
be replaced. (Figure 3)
NOTE: Wheel chains need to be replaced in pairs to
keep the adjustment even from one side to the other.
1. Remove the chain covers. Find and remove the
master links and remove old chains.
2. Check sprockets for wear. Replace if visibly worn.
3. Tip the machine to the right until it rests on the
blower housing.
4. Loosen the nuts Aon the carriage bolts securing
the chain adjuster brackets on each side. Leave
the center pivot bolt Btight.
5. Once the carriage bolts are loose, set the machine
back down and install the new chains.
6. Check and ensure the differential output sprockets
and wheel sprockets are aligned. If necessary, use
spacer washers to eliminate as much axial play as
possible of the wheel on the axle.
7. Support the rear of the machine with the wheels off
the ground and move the adjuster brackets until the
chain has 1/16” to 1/8” droop on the slack side with
the other side tight. Both adjusters should be in
about the same position.
8. Tighten the nuts Aon the carriage bolts.
9. Lubricate the chains with bicycle chain lubricant.
10. Reinstall the chain covers.
A
A
B
WHEEL
Figure 3

18
LITTLE
WONDER
BLOWER
DRIVEN DISC REPLACEMENT
Figure 4
1. Disconnect the clutch cable at the clutch bail. If
necessary the bail may be squeezed together to
remove it from the handle to get enough slack.
Move the speed control lever to neutral.
2. Drain the oil and fuel so the machine may be tipped.
3. Remove the front wheel bracket and inlet cover. Tip
the machine forward onto the fan housing to gain
access to the bottom side.
4. Remove bottom cover.
5. Remove the outermost hairpin cotter A on each end
of the trunnion link rod B. Remove the trunnion link
rod.
6. Loosen and back off the setscrews Con both
bearing adaptors on the hex shaft.
7. Remove the bolts Dholding the bearings on each
end of the hex shaft to the engine deck.
8. Slide the pulley end bearing E toward the pulley
to gain clearance to tip the shaft out of the engine
deck. Remove the shaft assembly from the engine
deck.
9. Slide the bearing Foff the trunnion end of the shaft
and remove the trunnion.
10. Replace the driven disc.
11. Reinstall in the reverse order. Be sure to put the
belt around the hex shaft. Check the installation for
pulley alignment with a straight edge.
12. Rell the engine with oil.
DIFFERENTIAL REPLACEMENT
1. If the shafts are removed or the differential needs
to be replaced, the equivalent of one or two
pumps of Bentonite (waterproof) grease must be
put in the space where the shafts come together.
2. Install the shaft with the hollow end, then put the
grease in the differential cavity and install the
second shaft. (Figure 5)
GREASE
Figure 5
A
B
C D
E F
Figure 4
DRIVEN DISC / DIFFERENTIAL REPLACEMENT

19
LITTLE
WONDER
BLOWER
STORAGE / TORQUE SPECIFICATIONS
STORAGE
To prevent possible explosion or ignition of vaporized
fuel, do not store equipment with fuel in tank or
carburetor in an enclosure with open ame (for example,
a furnace or water heater pilot).
Before the equipment is put into storage for any
period exceeding 30 days.
1. Drain all fuel from the fuel tank and fuel lines.
2. Start the engine and run until all the fuel is used
from the carburetor oat bowl and the engine
stops.
3. While the engine is still warm, drain the crankcase
oil and replace with the proper weight oil
corresponding to the season the equipment will be
next used.
4. Remove the spark plug and squirt a small amount
of engine oil into the cylinder. Slowly pull the
starter a few times to distribute oil in the cylinder
and reinstall the spark plug.
5. Top off if necessary. See engine manual for
details.
Location Description P/N Min. Torque
Ft-lbs (In-lbs)
Max. Torque
Ft-lbs (In-lbs)
Housing to engine face BLT-W LF 5/16-24 x 1-3/8 910517 22 28
Engine to deck BLT 5/16-18 X 1-1/2 64262-009 19 25
Fan to Crankshaft
BLT-HEX 7/16-20 x 1-3/4 GR8
(USED ON 9270 MODELS)
64123-253
50 90
BLT-HEX 3/8-24X1-3/4 GR8
(USED ON 9390 AND 9400
MODELS)
64123-127
30 50
BLT-HEX 3/8-24 X 2.5 GR 8
(USED ON 9570 MODELS) 64123-267
30 50
To put the equipment into service after an extended
period of storage.
1. Check for loose parts and tighten if necessary.
2. Fill the fuel tank and then check the engine oil
level.
3. Start the engine and check for fuel leaks. Repair
any leaks before operating the unit.
TORQUE SPECIFICATIONS

20
LITTLE
WONDER
BLOWER
PARTS
SECTION