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Craftsman
Boating

Model # 21758721 Official Craftsman 10.5-hp outboard motor

Here are the diagrams and repair parts for Official Craftsman 21758721 10.5-hp outboard motor, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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Showing 10 of 353 parts  |
Seal 510242
#24

Engine assembly diagram

Seal

Part #510242

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

Sealer 510304A
#62

Engine assembly diagram

Sealer

Part #510304A

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

Washer 4432
#21

Twist grip assembly diagram

Washer

Part #4432

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

Washer 4448
Washer

Part #4448

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

Tecumseh Ball Bearing 26290
#44

Gear housing assembly diagram

Tecumseh ball bearing

Part #26290

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

Pin (silver) 6415
Pin (silver)

Part #6415

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

Tecumseh Bushing 26243
#56

Power head assembly diagram

Tecumseh bushing

Part #26243

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

Tecumseh Bushing 66072
#37

Twist grip assembly diagram

Tecumseh bushing

Part #66072

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

Tecumseh Gasket (gray) 26352
#27

Column assembly diagram

Tecumseh gasket (gray)

Part #26352

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

Symptoms for water softeners

Choose a symptom to see related water softener repairs.

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Why does my water softener overflow?

Main causes: faulty brine valve assembly, bad rotor valve…

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Why is my softened water salty?

Main causes: clogged drain hose, faulty rotor valve, leaky rotor valve seals…

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Why isn't my water softener using salt?

Main causes: salt bridge inside the salt tank, bad timer, valve motor failure, faulty rotor valve, clogged venturi…

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Why does my water softener leak water?

Main causes: loose water line connections, cracked water-carrying components, bad rotor valve seals…

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Why is there no display on my water softener?

Main causes: lack of electrical power, bad power transformer, faulty timer…

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Why isn't my water softener softening my water?

Main causes: empty salt tank, salt bridge, depleted resin, clogged or damaged venturi, broken rotor position switch, fai…

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Why are water softener resin beads in my water?

Main causes: broken resin tank screen, bad resin tank seals, cracked upper distributor in resin tank…

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Why isn't my water softener meter working?

Main causes: broken water flow meter, faulty timer, water flow to softener is bypassed…

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Repair guides for water softeners

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

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How to replace a water softener venturi

How to replace a water softener venturi

The venturi valve in your water softener draws brine water from the salt tank to the resin tank for regeneration. Follow…

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Repair difficulty
Time required
 15 minutes or less
How to replace a water softener rotor position switch

How to replace a water softener rotor position switch

The rotor position switch detects the position of the valve rotor. If the rotor position switch fails, follow these step…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a water softener timer

How to replace a water softener timer

The timer is the control board you use to program the water softener. If the timer isn’t accepting commands when you pus…

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Repair difficulty
Time required
 15 minutes or less

Articles and videos for water softeners

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

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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.…

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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.…

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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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