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MTD
Front-Tine Tiller

Model # 21AS144R799 Official MTD front-tine tiller

Here are the diagrams and repair parts for Official MTD 21AS144R799 front-tine tiller, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 127 parts  |
Gasket 791-182374
#81

Engine parts diagram

Gasket

Part #791-182374

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

Flywheel 791-182736
#72

Engine parts diagram

Flywheel

Part #791-182736

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

Carb/pri 753-1225
#24

Engine parts diagram

Carb/pri

Part #753-1225

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

Bracket 753-04058
#17

Cultivator assembly diagram

Bracket

Part #753-04058

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

Push Rod 791-181033
#15

Engine parts diagram

Push rod

Part #791-181033

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

Rope 791-182661
#57

Engine parts diagram

Rope

Part #791-182661

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

Rocker Arm 791-182100
#10

Engine parts diagram

Rocker arm

Part #791-182100

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

Fuel Line 791-182352
#35

Engine parts diagram

Fuel line

Part #791-182352

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

Shld:tine:po 753-05080
#25

Cultivator assembly diagram

Shld:tine:po

Part #753-05080

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

Baffle 753-1226
#18

Engine parts diagram

Baffle

Part #753-1226

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

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

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

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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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Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

This chart will help you find the right carburetor for your Craftsman snowblower, tiller or log splitter.…

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