Craftsman 536.886150 Owner's Manual page 20

If adjustment is necessary:
• Loosen bolts in speed selector lever (see
figure below),
Speed Selector Lever
=== Bolts to be
/loosened
i
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 the gasoline from the fuel tank.
° Drain the fuel in a container and reinstall
the fuel line.
• Disconnect the spark plug wire,
- Stand the snow thrower up on the auger
housing end (see figure below),
Friction
• Remove right side bearing plate. Leave
hex shaft in original position.
• Remove frictionwheel from hub, Slip fric-
tion wheel off hex shaft towards right side°
See figure below.
Friction Wheel
Lockwasher
Shaft
Bolt
Nut Lockwasher
TO REPLACE AUGER SHEAR BOLT
The augers are secured to the auger shaft
with special bolts (see figure below) 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.
Shear Bolt _
_Shear Bolt
-.-_ Spacer
Bearing
PlateBolts
Fasteners
(Bolts,
and nuts)/'
......... }=,
Unit Standing on Auger Housing End
• Remove the bottom panel (see second
figure on page 19).
• Remove the three (3) fasteners securing
the friction wheel to the hub (see second
figure above),
• Remove the four bolts securing the bear-
ing plates (both sides), (see second fig-
ure above).
IMPORTANT: To ensure safety and perfor-
mance levels, only original equipment 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 by squirting
Lubriplate or a fiber impregnated grease
into the shear bolt hole in the auger shaft°
Then rotate the auger to distribute the oil
in the shaft.
• Align the hole in the auger with the hole in
the auger shaft Install the new shear bolt
and shear bolt spacer provided
, Reconnect the spark plug wire,
2O