Sears CRAFTSMAN C 151 61672 3 Owner's Manual page 31

PROBLEM
Chute plugs easily.
Chute rotation is difficult.
Snowblower digs into ground.
Snowblower does not raise evenly.
Snowblower vibrates or is abnor-
mally noisy.
Auger turns the wrong way.
TROUBLESHOOTING
POSSIBLE CAUSES
Tractor engine turning too slowly.
Advancing too quickly with tractor.
Dirt or ice may be underneath
chute.
Ground is not frozen or too soft.
Tire pressure uneven from one side
to another.
Maladjustment of the snowblower.
Damaged pulley.
Damaged bearing.
Damaged fan.
Damaged auger.
Belt is installed improperly.
29
CORRECTIVE ACTION
Run engine at full throttle during
snowblowing operation.
Allow snowblower to ingest snow at
its own speed.
Dismount chute by removing the
rotation worm (for identification, see
parts list "Chute with Rotation Sys-
tem"). Turn the chute completely
towards the rear and it will discon-
nect from base. Clean the base of
chute and the rotation ring. Lubri-
cate & re-install.
Adjust skid shoes lower so they
may better support the snowblower.
If problem persists, change skid
shoes for heavy duty skid shoes
(option #700243) which cover more
surface and prevents snowblower
from digging.
Verify and adjust tire pressure:
Front tires: 14 to 15 psi
Rear tires: 7 to 8 psi
Loosen male hitch on snowblower
(for identification, see parts list
"Snowblower").
Place a shim (ex.:piece of wood
approx. 2" thick) under the lowest
side of snowblower which needs to
be leveled. Re-tighten bolts.
Replace pulley.
Replace bearing.
Dismount & repair or replace fan.
Replace auger.
See belt mounting instructions
Snowblower Installation section or
check the belt replacement instruc-
tions in the maintenance section.