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Craftsman
Gas Snowblower

Model # 91788777 Official Craftsman snow thrower

Here are the diagrams and repair parts for Official Craftsman 91788777 snow thrower, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 201 parts  |
Lock Nut 73900600
#15

Impeller & gear box diagram

Lock nut

Part #73900600

Replaced by #532409149

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Manufacturer substitution
This part replaces 73900600. Substitute parts can look different from the original.
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Pipe Fitting 132010
#52

Drive diagram

Pipe fitting

Part #132010

Replaced by #532409149

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Manufacturer substitution
This part replaces 132010. Substitute parts can look different from the original.
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Lawn & Garden Equipment Screw 851084
#16

Impeller & traction belts diagram

Lawn & garden equipment screw

Part #851084

Replaced by #532435345

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Manufacturer substitution
This part replaces 851084. Substitute parts can look different from the original.
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Tower Lawn & Garden Equipment Head Bolt (replaces 17060616, 17490616, 25x6, 53217000616, 817000616, 8170006-16, 817490616) 17000616
#4

Lower handle/pivot support weldment diagram

Tower lawn & garden equipment head bolt (replaces 17060616, 17490616, 25x6, 53217000616, 817000616, 8170006-16, 817490616)

Part #17000616

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Washer 19131316
Washer

Part #19131316

Replaced by #596565301

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Manufacturer substitution
This part replaces 19131316. Substitute parts can look different from the original.
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Lawn Tractor Hex Bolt, 5/16-18 X 3/4-in (replaces 17000512) 428867
Lawn tractor hex bolt, 5/16-18 x 3/4-in (replaces 17000512)

Part #428867

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Snowblower Gearbox (replaces 174659, 532427148) 427148
Snowblower gearbox (replaces 174659, 532427148)

Part #427148

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Auger Worm Gear 407763
#24

Impeller & gear box diagram

Auger worm gear

Part #407763

Replaced by #427148

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Manufacturer substitution
This part replaces 407763. Substitute parts can look different from the original.
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Snowblower Auger Drive Belt 408007
#1

Impeller & traction belts diagram

Snowblower auger drive belt

Part #408007

Replaced by #532408007

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Manufacturer substitution
This part replaces 408007. Substitute parts can look different from the original.
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Lawn & Garden Equipment Pan Head Screw (replaces 532175262, 5321752-62) 175262
#5

Panel console/headlight bezel diagram

Lawn & garden equipment pan head screw (replaces 532175262, 5321752-62)

Part #175262

This item is not returnable
$5.29 | 
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