Craftsman
Boating

Model # 21758521 Official Craftsman outboard motor

Here are the diagrams and repair parts for Official Craftsman 21758521 outboard motor, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 23 parts  |

Pulley 590413A
#6

Rewind starter diagram

Pulley

Part #590413A

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

Spring 590411
#3

Rewind starter diagram

Spring

Part #590411

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

Bulb Clamp 96132
#6

Optional gas tank no. 5973 diagram

Bulb clamp

Part #96132

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

Coupling 96124
#8

Optional gas tank no. 5973 diagram

Coupling

Part #96124

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

Spring 590412
#5

Rewind starter diagram

Spring

Part #590412

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

Retainer 590410
#2

Rewind starter diagram

Retainer

Part #590410

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

Screw 590409
#1

Rewind starter diagram

Screw

Part #590409

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

Handle Asu 590387
#10

Rewind starter diagram

Handle asu

Part #590387

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

Housing 590415
#8

Rewind starter diagram

Housing

Part #590415

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

Gasket 96215
#5

Optional gas tank no. 5973 diagram

Gasket

Part #96215

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

Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

How to remove a lawn mower blade using a removal tool

How to remove a lawn mower blade using a removal tool

Learn how a blade removal tool makes replacing the blade easier and safer…

How to sharpen a lawn mower blade

How to sharpen a lawn mower blade

A dull blade leaves grass tips tattered. Sharpen it several times a season. Here's how.…

Lawn mower won't start troubleshooting video: can't pull recoil pull cord

Lawn mower won't start troubleshooting video: can't pull recoil pull cord

A blade obstruction, bad recoil starter or locked-up engine can prevent the pull cord on your mower from working. See ho…