MTD
Front-Tine Tiller

Model # 21A-154A799 Official MTD front-tine tiller

Here are the diagrams and repair parts for Official MTD 21A-154A799 front-tine tiller, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Yard Machines Lawn & Garden Equipment Nut 712-04064
#27

Cultivator assembly diagram

Yard machines lawn & garden equipment nut

Part #712-04064

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$4.49
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Bolt, Hex Wa 4543
#26

Cultivator assembly diagram

Bolt, hex wa

Part #4543

Replaced by #710-0599

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Manufacturer substitution
This part replaces 4543. Substitute parts can look different from the original.
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$4.91
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Knob-lower H 720-04052
#7

Cultivator assembly diagram

Knob-lower h

Part #720-04052

Replaced by #720-04072A

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Manufacturer substitution
This part replaces 720-04052. Substitute parts can look different from the original.
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Ace Lawn & Garden Equipment Push Cap 726-0299
#49

Cultivator assembly diagram

Ace lawn & garden equipment push cap

Part #726-0299

This item is not returnable
$12.39
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Inner Tine Assembly 686-0179
#24

Cultivator assembly diagram

Inner tine assembly

Part #686-0179

Replaced by #753-05986

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Manufacturer substitution
This part replaces 686-0179. Substitute parts can look different from the original.
$54.19
10% OFF Phone Price : $60.19
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Outer Tine Assembly 686-0176
#21

Cultivator assembly diagram

Outer tine assembly

Part #686-0176

Replaced by #753-05986

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Manufacturer substitution
This part replaces 686-0176. Substitute parts can look different from the original.
$54.19
10% OFF Phone Price : $60.19
In Stock
Lawn & Garden Equipment Hex Bolt 710-0597
#25

Cultivator assembly diagram

Lawn & garden equipment hex bolt

Part #710-0597

This item is not returnable
In Stock
Ryobi Lawn & Garden Equipment Nut 712-0324
#5

Cultivator assembly diagram

Ryobi lawn & garden equipment nut

Part #712-0324

This item is not returnable
$4.72
17% OFF Phone Price : $5.72
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Lawn Tractor Hex Bolt 710-0805
#4

Cultivator assembly diagram

Lawn tractor hex bolt

Part #710-0805

Replaced by #710-0805A

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Manufacturer substitution
This part replaces 710-0805. Substitute parts can look different from the original.
This item is not returnable
In Stock
Motor Strap 786-04268
#42

Cultivator assembly diagram

Motor strap

Part #786-04268

This item is not returnable
In Stock

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

Main causes: clutch cable problems, faulty transmission…

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

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

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Main causes: broken shaft clevis pins, transmission failure…

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

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.

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…

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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