Sears 536.884821 - Manual (Page 20)

SERVICE AND ADJUSTMENTS
TRACTION DRIVE BELT
If your snow thrower will not move forward, check the
traction drive belt for wear. If the traction drive bell needs
to be replaced, proceed as follows:
Disconnect the spark plug wire.
Remove the belt cover (See Fig. 26).
Loosen belt guides (See Fig 27) and pull bell guides
away from the engirte drive pulley.
Loosen nut on auger idler and puli auger idler pulley
away from belt,
Remove auger drive belt from engine pulley
Pull drive belt idler pulley away from drive belt
Remove drive belt.
Position new drive belt onto traclion pulley
Puli Idler pulley away from belt, allowing bell to be
positioned onto engine pulley
Release idler pulley Ensure idler pulley is properly
engaged with belt..
Adjust belt guides (see To Adjust The Beit Guides
paragraph below).
Reinstall the belt cover.
Reconnect the spark plug wire.
TO ADJUST THE BELT GUIDES
After you replace a track or auger drive belt, you need to
adjust one or both of the belt guides Proceed as follows;
• Disconnect the spark plug wire,
• Remove the belt cover (See Fig 26)
• Engage the auger drive dutch lever.
• Measure the distance between the belt guides and
the belt (See Fig. 28). The distance should be 3/32"
for each guide.
• If adjustment is necessary, loosen the belt guide
mounting bolts. Move the belt guides to the correct
position. Tighten the mounting bolts
• Reinstall the belt cover,
• Reconnect the spark plug wire
TO ADJUST THE FRICTION WHEEL
if the snow thrower wilt not move forward, you need to
check the track drive belt, the traction drive cable or the
friction wheel. If the friction wheel is damaged; it will need
to be replaced. See the To Replace Friction Wheel
paragraph on page 21, If the friction wheel is not worn,
check the adjustment, as follows:
• Disconnect the spark plug wire.
• Drain the gasoline from the gas tank.
• Stand snow thrower on the auger housing end.
• Remove the bottom pane! (See Rg 29).
• 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 Rg, 30).
If adjustment is necessary:
• Loosen nut "A" on the speed select rod. Remove
the ball joint by removing nut "B" from the shift yoke
assembly. Lengthen or sfiorten the rod by turning
the adaptor to obtain the correct friction wheel po­
sition (See Fig. 31).
• Reinstall the ball joint and nut “B." Tighten nut "A."
• Reinstall the bottom panel.
FHICnON
WHEEL
DISC DRIVE
PLATE
FIG. 30