SERVICE AND ADJUSTMENTS
●
●
Reinstall the belt cover.
● Remove the four bolts securing the bearing plates
(
both sides).
Reconnect the spark plug wire.
●
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.
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:
● 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 tooriginal position. Ensure hex
shaft is engaged with both bearing plates and spe-
cial washers are intact.
●
●
●
●
●
●
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.
●
●
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.
Note the position of the friction wheel on the disc
drive plate. The right outer side ofthe disc drive plate
should be 3" from the center of the friction wheel
● Should friction wheel require adjustment, see To
Adjust the Friction Wheel.
(
See III.28).
NOTE: Ensure friction wheel and friction disc are free
from grease or oil.
If adjustment is necessary:
●
●
●
Remove washer and cotter pin connecting trunion
nut to speed rod (See III.29).
●
●
Replace bottom panel.
Lower the snow thrower.
Twist trunion nut up or down on shift rod to obtain the
correct friction wheel position.
TO REPLACE AUGER SHEAR BOLT
Put end of trunion nut through hole in speed rod and
reattach washer and cotter pin (See III.29).
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.
●
●
TO REPLACE FRICTION WHEEL
Reinstall the bottom panel.
Lower the snow thrower onto the tracks.
IMPORTANT: TO INSURE SAFETY AND LEVELS,
ONLY O R I G I N A L E Q U I P M E N T
SHEAR BOLTS SHOULD BE USED.
WHEN REPLACING SHEAR BOLTS,
BESURE TOREPLACESHEARBOLT
SPACERS.
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.
To replace a broken shear bolt, proceed as follows:
●
Move the throttle to STOP and turn off all controls.
●
Drain thegasoline from thefuel tank byremoving the
fuel line. Drain the fuel and reinstall the fuel line.
● Disconnect the spark plug wire. Be sure all moving
parts have stopped.
●
●
Disconnect the spark plug wire.
●
●
Lubricate the auger shaft zerk fitting (See the Main-
tenance section in this manual).
Stand the snow thrower up on the auger housing
end (See III.31).
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.
●
●
●
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.
●
Reconnect the spark plug wire.
NOTE: Note position of special washers and retaining
ring on the hex shaft and sprocket assembly.
26
| Categories | Husqvarna Snow Blower Manuals, Snow Blower Manuals |
|---|---|
| Tags | Husqvarna ST724 |
| Download File |
|
| Document Type | Owner's Manual |
| Language | English |
| Product Brand | Husqvarna, Snow Blower |
| Document File Type | |
| Publisher | husqvarna.com |
| Wikipedia's Page | Husqvarna |
| Copyright | Attribution Non-commercial |
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