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Craftsman
Gas Walk-Behind Mower

Model # 91781320 Official Craftsman 32" rear discharge rotary cutting unit

Here are the diagrams and repair parts for Official Craftsman 91781320 32" rear discharge rotary cutting unit, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 58 parts  |
Lock Washer 10040600
#28

Main frame diagram

Lock washer

Part #10040600

Replaced by #596238701

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Manufacturer substitution
This part replaces 10040600. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Lock Nut 03510500
#16

Main frame diagram

Lock nut

Part #03510500

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

Gasket 788028
#7

Right angle drive diagram

Gasket

Part #788028

Replaced by #788028

?
Manufacturer substitution
This part replaces 788028. Substitute parts can look different from the original.
This item is not returnable
$6.09
In Stock
Bearing 780034
#8

Right angle drive diagram

Bearing

Part #780034

Replaced by #780034

?
Manufacturer substitution
This part replaces 780034. Substitute parts can look different from the original.
$40.56
In Stock
Washer 4376H
#29

Main frame diagram

Washer

Part #4376H

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

Output Shaft 776042
#5

Right angle drive diagram

Output shaft

Part #776042

Replaced by #776042

?
Manufacturer substitution
This part replaces 776042. Substitute parts can look different from the original.
$49.82
In Stock
Hitch Pin, 2-pack 4939M
#22

Main frame diagram

Hitch pin, 2-pack

Part #4939M

Replaced by #596919601

?
Manufacturer substitution
This part replaces 4939M. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
Back Order
Head Assembly 794001
Head assembly

Part #794001

Replaced by #794327A

?
Manufacturer substitution
This part replaces 794001. Substitute parts can look different from the original.
$198.76
In Stock
Gasket 788030
#13

Right angle drive diagram

Gasket

Part #788030

Replaced by #788030B

?
Manufacturer substitution
This part replaces 788030. Substitute parts can look different from the original.
This item is not returnable
$6.09
In Stock
Input Shaft 776040
#4

Right angle drive diagram

Input shaft

Part #776040

Replaced by #776040A

?
Manufacturer substitution
This part replaces 776040. Substitute parts can look different from the original.
$44.04
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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