Craftsman 107.28791 Operator's Manual page 31

Engine runs, but Transmission release levers in PUSH
rider will not positions.
drive.
Drive belt slips.
Belt is broken.
Parking brake is not fully released.
Rider drive belt Pulleys or belt greasy or oily.
slips.
Belt stretched or worn.
Parking brake Parking brake is incorrectly adjusted.
will not hold.
Rider steers or Improper tire inflation.
handles poorly.
Steering linkage is loose.
Rider tracks to Ground speed adj. knobs not adjusted. See SPEED BALANCING ADJUSTMENT in the Service
one side.
Troubleshooting the Mower
PROBLEM CAUSE
Mower cutting Cutting height motor screw dirty or
height difficult to requires lube.
adjust.
Cutting height linkage disconnected.
Mower cut is Rider tires not inflated equally or properly. See Maintenance Section.
uneven.
Mower not leveled properly.
Mower cut is rough Engine speed too slow.
looking.
Ground speed too fast.
Blades are dull.
Mower drive belt slipping because it is oily
or worn.
Blades not properly fastened to arbors.
Engine stalls easily Engine speed too slow.
with mower
Ground speed too fast.
engaged.
Cutting height set too low.
Underside of mower deck dirty.
Discharge chute jamming with cut grass.
Excessive mower Blade mounting bolts are loose.
vibration.
Mower blades, arbors, or pulleys are bent. Check and replace as necessary.
Mower blades are out of balance.
Belt installed incorrectly.
Mower drive belt Idler pulley spring broken or not properly
slips or fails to attached.
drive.
Mower drive belt broken.
PTO clutch out of adjustment.
Move levers to DRIVE positions.
Clean or replace belt as necessary.
Replace drive belt. Contact Sears Parts & Repair.
Contact Sears Parts & Repair.
Clean as required.
Replace belt. Contact Sears Parts & Repair.
See Service & Adjustments Section.
See Maintenance Section.
Check and tighten any loose connections.
& Adjustments section.
REMEDY
Thoroughly clean and lubricate cutting height crank
with oil.
Reconnect cutting height linkage
See "Mower Leveling" in Service & Adjustments.
Always set throttle to FULL when mowing.
Decrease ground speed.
Sharpen or replace blades. See Maintenance
Section.
Clean or replace belt as necessary.
See "Check/Replace Mower Blades" in
Maintenance Section.
Always set throttle to FULL when mowing.
Decrease Ground Speed.
Cut tall grass at maximum cutting height during first
pass.
Remove mower deck and clean underside.
Cut grass with discharge pointing toward previously
cut area.
Tighten to 45-55 ft. lbs. (61-75 N.m.).
Replace or balance blades. See Maintenance
Section.
Reinstall correctly.
Repair or replace as needed.
Replace drive belt.
Adjust PTO clutch. See Maintenance Section.
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