Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Craftsman
Boating

Model # 21758890 Official Craftsman 7.5-hp outboard motor

Here are the diagrams and repair parts for Official Craftsman 21758890 7.5-hp outboard motor, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 285 parts  |
Gasket 631028
#25

Carburetor assembly diagram

Gasket

Part #631028

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

Fuel Line 29774
#56

Engine assembly no. 640-03b diagram

Fuel line

Part #29774

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

Float 631023
#14

Carburetor assembly diagram

Float

Part #631023

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

Lock Nut 2632
#29

Twist grip assembly diagram

Lock nut

Part #2632

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

Seal 510105
#12

Engine assembly no. 640-03b diagram

Seal

Part #510105

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

Seal 510242
#72

Engine assembly no. 640-03b diagram

Seal

Part #510242

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

Spring 590412
#5

Rewind starter assembly no. 590420 diagram

Spring

Part #590412

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

Retainer 510106
#13

Engine assembly no. 640-03b diagram

Retainer

Part #510106

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

Clip 631022
#13

Carburetor assembly diagram

Clip

Part #631022

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

Spring 510109
#14

Engine assembly no. 640-03b diagram

Spring

Part #510109

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

Symptoms for gas ranges

Why isn't my range's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Read more

Why won't my range's gas burner spark or ignite?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Read more

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a gas range oven control board

How to replace a gas range oven control board

These step-by-step instructions explain how to replace an oven control board on a gas range…

Read more
Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas ranges

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

Get tips on completing essential holiday cleaning tasks to brighten your home.…

Read more
How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more

Parts & More