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26
SERVICE AND ADJUSTMENTS
● Reinstall the belt cover.
● Reconnect the spark plug wire.
TO ADJUST THE FRICTION WHEEL
If the snow thrower will not move forward, you need to
check the traction drive cable or the friction wheel. If the
friction wheel is worn or damaged, it will need to be
replaced. See To Replace Friction Wheel paragraph in
this section. If the friction wheel is not worn or damaged,
check the adjustment, as follows:
● Disconnect the spark plug wire.
● Drain the gasoline from the gas tank.
● Stand the snow thrower on the auger housing end.
● Remove the bottom panel (See III.27).
● Position the shifter lever in first (1) gear.
● Note the position of the friction wheel on the disc
drive plate. The right outer side of the disc drive plate
should be 3" from the center of the friction wheel
(See III.28).
If adjustment is necessary:
● Remove washer and cotter pin connecting trunion
nut to speed rod (See III.29).
● Twist trunion nut up or down on shift rod to obtain the
correct friction wheel position.
● Put end of trunion nut through hole in speed rod and
reattach washer and cotter pin (See III.29).
● Reinstall the bottom panel.
● Lower the snow thrower onto the tracks.
TO REPLACE FRICTION WHEEL
If the snow thrower will not move forward, and the
friction wheel is worn or damaged, you need to replace
it as follows: (First allow the engine to cool.)
DRAIN GASOLINE OUTDOORS AWAY
FROM FIRE OR FLAME.
● Drain the gasoline from the fuel tank by removing the
fuel line. Drain the fuel and reinstall the fuel line.
● Disconnect the spark plug wire.
● Stand the snow thrower up on the auger housing
end (See III.31).
● Remove the bottom panel (See III.27).
● Remove shift rod form speed rod. (See III.29)
● Remove the three (3) fasteners (screws,
lockwashers, and nuts) securing the friction wheel
to hub (See III.30) and set fasteners aside.
NOTE: Note position of special washers and retaining
ring on the hex shaft and sprocket assembly.
● Remove the four bolts securing the bearing plates
(both sides).
● Remove right side bearing plate. Leave hex shaft in
original position, and carefully raise hex shaft just
until the friction wheel clears the frame enough to be
removed.
● Remove friction wheel from hub. Slip friction wheel
off hex shaft towards right side (See III.31).
● Position new friction wheel onto hub.
● Install bearing plates to original position. Ensure hex
shaft is engaged with both bearing plates and spe-
cial washers are intact.
● Secure bearing plates using bolts removed earlier.
● Secure friction wheel to hub using fasteners re-
moved earlier. Ensure hex shaft turns freely.
● Reinstall shift rod to speed rod.
● Should friction wheel require adjustment, see To
Adjust the Friction Wheel.
NOTE: Ensure friction wheel and friction disc are free
from grease or oil.
● Replace bottom panel.
● Lower the snow thrower.
TO REPLACE AUGER SHEAR BOLT
The augers are secured to the auger shaft with special
bolts (See III.32) that are designed to break (to protect
the machine) if an object becomes lodged in the auger
housing. Use of a harder bolt will destroy the protection
provided by the shear bolt.
IMPORTANT: TO INSURE SAFETY AND LEVELS,
ONLY ORIGINALEQUIPMENT
SHEAR BOLTS SHOULD BE USED.
WHEN REPLACING SHEAR BOLTS,
BE SURE TO REPLACE SHEAR BOLT
SPACERS.
To replace a broken shear bolt, proceed as follows:
● Move the throttle to STOP and turn off all controls.
● Disconnect the spark plug wire. Be sure all moving
parts have stopped.
● Lubricate the auger shaft zerk fitting (See the Main-
tenance section in this manual).
● Align the hole in the auger with the hole in the auger
shaft. Install the new shear bolt, shear bolt spacer,
and locknut provided in parts bag.
● Reconnect the spark plug wire.