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Craftsman
Tiller

Model # 74778551 Official Craftsman rotary chopper

Here are the diagrams and repair parts for Official Craftsman 74778551 rotary chopper, 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 50 parts  |
Washer 12492
#23

Gear box and rotor ass'y diagram

Washer

Part #12492

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

Cross Kit 31138E
#5

Universal ass'y diagram

Cross kit

Part #31138E

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

Universal Half (gear Box End) 12500
#12

Universal ass'y diagram

Universal half (gear box end)

Part #12500

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

Washer 25680
#10

Lift, shroud & tail wheel ass'y diagram

Washer

Part #25680

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

Oil Seal 12489
#13

Gear box and rotor ass'y diagram

Oil seal

Part #12489

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

Wheel Spacer 12466
#11

Lift, shroud & tail wheel ass'y diagram

Wheel spacer

Part #12466

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

Yoke & Shaft 31061C
#6

Universal ass'y diagram

Yoke & shaft

Part #31061C

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

Universal Ass'y Complete 12498
#14

Universal ass'y diagram

Universal ass'y complete

Part #12498

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

Washer 31138C
#11

Universal ass'y diagram

Washer

Part #31138C

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

Tube Weld't 12460
#9

Lift, shroud & tail wheel ass'y diagram

Tube weld't

Part #12460

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

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

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Why do my tiller's tines turn but the wheels don't?

Main causes: clutch cable problems, faulty transmission…

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Why does my tiller turn the soil poorly?

Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper de…

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Why won't my tillers wheels or tines turn?

Main causes: worn or broken drive belts, bad transmission, clutch cable problems…

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Why does my tiller's engine leak oil or gas?

Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, lea…

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Why do my tiller's wheels turn but the tines don't?

Main causes: broken shaft clevis pins, transmission failure…

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Why does my tiller's engine run roughly or misfire?

Main causes: dirty carburetor, engine needs tune up, stale gas…

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Why won't my tiller's engine start?

Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter…

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Most common repair guides to help fix your tillers

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

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How to replace a tiller recoil starter

The recoil starter spins the engine when you pull the starter rope, and the rope retracts when released. If the recoil s…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your tillers

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