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Craftsman
Lawn & Garden

Model # 91788387 Official Craftsman gearcase

Here are the diagrams and repair parts for Official Craftsman 91788387 gearcase, as well as links to manuals and error code tables, if available.

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Error Codes

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Showing 10 of 22 parts  |
Lawn & Garden Equipment Washer (replaces 532057079, 5320570-79) 57079
#10

Gearcase diagram

Lawn & garden equipment washer (replaces 532057079, 5320570-79)

Part #57079

This item is not returnable
$3.09 | 
24% OFF Phone Price : $4.09
In Stock
Lock Nut 53838
#1

Gearcase diagram

Lock nut

Part #53838

The manufacturer no longer makes this part, and there's no substitute part

Worm Shaft 83720
#19

Gearcase diagram

Worm shaft

Part #83720

The manufacturer no longer makes this part, and there's no substitute part

Bolt STD522512
#22

Gearcase diagram

Bolt

Part #STD522512

The manufacturer no longer makes this part, and there's no substitute part

Case 48032
#6

Gearcase diagram

Case

Part #48032

The manufacturer no longer makes this part, and there's no substitute part

Lawn Mower Transmission Case Plug 86447
#13

Gearcase diagram

Lawn mower transmission case plug

Part #86447

The manufacturer no longer makes this part, and there's no substitute part

Drive Lock Pin 57388
#5

Gearcase diagram

Drive lock pin

Part #57388

The manufacturer no longer makes this part, and there's no substitute part

Grease 750355
#16

Gearcase diagram

Grease

Part #750355

The manufacturer no longer makes this part, and there's no substitute part

Clutch Jaw 75424
#15

Gearcase diagram

Clutch jaw

Part #75424

The manufacturer no longer makes this part, and there's no substitute part

Drive Lock Pin 87822
#12

Gearcase diagram

Drive lock pin

Part #87822

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your dryers

Choose a symptom to see related dryer repairs.

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Why is my dryer making a rattling noise?

Main causes: bad drum support roller, damaged idler pulley, broken blower fan blade, worn drum glide bearing, bad drive …

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Why won't my dryer heat?

Main causes: bad gas valve coils, broken heating element, tripped safety thermostat or fuse, bad operating thermostat, c…

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Why won't my dryer door stay shut?

Main causes: damaged door strike, worn door catch…

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Why won't my dryer shut off?

Main causes: bad timer or electronic control board, door switch failure…

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Why doesn't my dryer work?

Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, blown thermal fuse, bad door s…

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Why does my dryer start then stop?

Main causes: clogged exhaust vent, bad motor relay, loose dryer door catch, bad door switch, control system failure, fau…

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Why isn't my dryer getting my laundry dry?

Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure…

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Why won't my dryer start?

Main causes: door switch failure, lack of power, broken belt, blown thermal fuse, bad drive motor, control system failur…

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Most common repair guides to help fix your dryers

These step-by-step repair guides will help you safely fix what’s broken on your dryer.

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How to replace a dryer drum support roller

How to replace a dryer drum support roller

If your dryer thumps or squeals, replace the drum support roller to restore quiet to your home.…

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Repair difficulty
Time required
 90 minutes or less
How to replace a dryer thermistor

How to replace a dryer thermistor

The thermistor senses the air temperature in the dryer. If your dryer overheats or doesn't heat at all, the thermistor …

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Repair difficulty
Time required
 30 minutes or less
How to replace a dryer door switch

How to replace a dryer door switch

The dryer won't start if the door switch isn't working correctly. You can install a replacement dryer door switch in les…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your dryers

Use the advice and tips in these articles and videos to get the most out of your dryer.

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How to use your clothes dryer efficiently

How to use your clothes dryer efficiently

Get expert tips on using your dryer efficiently to save energy.…

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How to repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…

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How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

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