Engineruns, but

rider will not

drive.

Rider drive belt slips.

Parking brake will not hold.

Rider steers or handles poorly.

Rider tracks to one side.

Transmission release levers in PUSH 9ositions.

Drive belt slips.

Belt is broken.

Parking brake is not fully released. Pulleys or belt greasy or oily.

Belt stretched or worn.

Parking brake is incorrectly adjusted.

Improper tire inflation.

Steering linkage is loose.

Ground speed adj. knobs not adjusted.

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. See SPEED BALANCING ADJUSTMENT

Troubleshooting the Mower

PROBLEM

Mower cutting height difficult to adjust.

Mower cut is uneven.

Mower cut is rough looking.

Engine stalls easily with mower

engaged.

Excessive mower vibration.

Mower drive belt

slips or fails to drive.

CAUSE

 

 

 

REMEDY

 

 

 

 

 

 

Cutting height crank threads dirty or

Thoroughly

clean and lubricate cutting height crank

require

lube.

 

 

with

oil.

 

 

 

 

 

 

Rider tires not inflated equally or properly.

See

Maintenance

Section.

 

 

Mower

not leveled properly.

See

"Mower

Leveling" in Service & Adjustments.

Engine

speed too slow.

 

Set throttle to FULL when mowing.

 

Ground

speed too fast.

 

Decrease

Ground

Speed.

 

 

Blades

are dull.

 

 

Sharpen

or replace

blades.

See Maintenance

 

 

 

 

Section.

 

 

 

 

 

 

Mower

drive belt slipping

because it is oily

Clean or replace belt as necessary.

 

or worn.

 

 

 

 

 

 

 

 

 

 

Blades

not properly fastened to arbors.

See

"Check/Replace

Mower

Blades"

in Maintenance

 

 

 

 

Section.

 

 

 

 

 

 

Engine

speed too slow.

 

Set to FULL

throttle.

 

 

 

Ground

speed too fast.

 

Decrease

Ground

Speed.

 

 

Cutting

height set too low.

Cut tall grass at maximum cutting height during first

 

 

 

 

)ass.

 

 

 

 

 

 

Underside of mower deck

dirty.

Remove mower deck and clean underside.

Discharge chute

jamming

with cut grass.

Cut grass

with discharge pointing toward previously

 

 

 

 

cut area.

 

 

 

 

 

 

Blade mounting

bolts are

loose.

Tighten to 45-55

ft. Ibs. (61-75 N.m.).

 

Mower blades, arbors, or pulleys are bent.

Check and replace as necessary.

 

Mower

blades are out of balance.

Replace

or balance

blades.

See Maintenance

 

 

 

 

Section.

 

 

 

 

 

 

Belt installed incorrectly.

 

Reinstall

Correctly.

 

 

 

Idler pulley spring broken or not properly

Repair or replace as needed.

 

attached.

 

 

 

 

 

 

 

 

 

 

Mower

drive belt broken.

 

Replace

drive belt.

 

 

 

PTO clutch out of adjustment.

Adjust PTO clutch.

See Maintenance

Section.

32

Page 32
Image 32
Craftsman 107.2777 manual Troubleshooting the Mower, Rider will not, Excessive mower vibration, Belt installed incorrectly

107.2777 specifications

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