Maintenance - Craftsman 138.88784 Manual Del Operator

WARNING!
Make sure to turn off the switch and remove
the battery before performing any maintenance
task on your snow thrower.
LIFETIME LUBRICATION
Lubrication is not necessary and may damage
the unit. The snow thrower is lubricated for
lifetime use at the factory before shipment.
GENERAL MAINTENANCE TIPS
• Do not attempt to repair the machine unless
you have the proper tools and instructions
for disassembly and repair of the machine.
• Check bolts and screws at frequent intervals
for proper tightness to ensure that equipment
is in safe working condition.
• After each snow removal session, run the
snow thrower for a few minutes to prevent
the collector/impeller from freezing. Shut
off the motor, wait for all revolving parts to
stop completely, and wipe residual ice and
snow off the unit. Rotate the chute deflector
several times to remove any excess snow.
REPLACING THE SCRAPER BAR
See Figures 13.
• The scraper bar is located at the base of the
snow thrower beneath the impeller housing.
• Remove the 5 screws that secure the right
side cover to the frame of the snow thrower.
Remove the right side plate.
• Remove the 5 screws that secure the left
side plate to the frame of the snow thrower.
Remove the left side plate.
• Detach the worn scraper bar from the snow
thrower by removing the 3 screws that hold it
in place.
• Install the new scraper bar and fasten it
securely to the snow thrower with 3 screws.
• Reinstall the right side cover and left side
cover.

MAINTENANCE

REPLACING THE DRIVE BELT
See Figures 14.
• Remove the 5 screws that secure the left
side cover to the frame of the snow thrower.
Remove the cover.
• Remove the old belt from the small pulley
and large pulley.
• Loop one end of the new belt over the small
pulley.
• Install the new belt by rotating the impeller
with the left hand while positioning the belt
on the large pulley with the right hand.
• Install the left side cover, and secure it using
the 5 screws.
REPLACING THE IMPELLER
See Figures 15.
• Remove the 5 screws that secure the right
side cover to the frame of the snow thrower.
• Remove the axle nut.
• Remove the 5 screws that secure the left
side cover to the frame of the snow thrower.
• Remove the belt.
• Using a 23 mm socket, remove the large
pulley.
• Remove the 5 screws that secure the left
side plate and remove the left side plate.
• Pull the axle and remove the old impeller.
• Install the new impeller.
• Reinstall the left side plate, large pulley, belt
and left side cover.
• Reinstall the nut and right side cover.
11 — English