Service & Adjustment - Craftsman 247.88790 Owner's Manual

WARNING:
Always stop the engine,
disconnect spark plug wire and move it away
from the spark plug before performing any
adjustments or repairs. Always wear safety
glasses during operation or while performing
any adjustments or repairs.
Servicing Augers
The augers are secured to the spiral shaft with two
shear pins and cotter pins. See Figure 12 . If you hit a
foreign object or ice jam, the snow thrower is designed
so that the pins will shear.
1. If the augers do not turn, check to see if the pins
have sheared.
2. Replace the pins if needed. Two replacement shear
pins and cotter pins have been provided with the
snow thrower. Spray an oil lubricant into shaft
before inserting new pins and securing with new
cotter pins. See Figure 12.
Auger
Shear Pin
Figure 12
IMPORTANT: NEVER replace the auger shear pins
with standard pins. Any damage to the auger gearbox
or other components, as a result of doing so, will NOT
be covered by your snow thrower's warranty.
Shave Plate and Skid Shoes
The shave plate and skid shoes on the bottom of the
snow thrower are subject to wear. Check these
periodically and replace as necessary.
Replacing Skid Shoe
1. Remove four carriage bolts and lock nuts which
attach two skid shoes to the snow thrower on two
sides. See Figure 12 .
2. Reassemble new skid shoes with the same
hardware. Make certain the skid shoes are
adjusted to be level.
SERVICE & ADJUSTMENTS
Cotter Pin
Replacing Shave Plate
1. After removing both skid shoes, remove four
carriage bolts and lock nuts which attach shave
plate to the snow thrower housing. See Figure 13 .
2. Reassemble new shave plate, making sure heads
of the carriage bolts are to the inside of the housing.
Tighten securely. Re-install skid shoes.
Carriage Bolt
Shave Plate
Lock Nut
Replacing Belt
Check the condition of both auger belt and drive belt
every 25 hours of snow thrower operation. Replace if
either shows signs of wear and tear. To remove and
replace either the auger belt or the drive belt, follow the
steps below and then proceed to the specific steps
listed under respective sub-headings.
1. Remove belt cover by removing the two self-
tapping screws that secure it to the snow thrower
housing. See Figure 14A.
2. Take auger belt off the pulley as shown in Figure
14B.
A
Self-Tapping
Screw
Belt Cover
B
Drive Belt
16
Skid Shoe
Figure 13
Self-Tapping
Screw
Engine
Pulley
Auger Belt
Figure 14
Nut