MTD
Front-Tine Tiller

Model # 21A34M5099 Official MTD front-tine tiller

Here are the diagrams and repair parts for Official MTD 21A34M5099 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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ALL PARTS
Showing 10 of 81 parts  |

Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
Lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

BEST SELLER
This item is not returnable
$4.09
20% OFF Phone Price : $5.09
In Stock
Lawn & Garden Equipment Bell Washer (replaces 936-0242) 736-0242
Lawn & garden equipment bell washer (replaces 936-0242)

Part #736-0242

BEST SELLER
$6.58
13% OFF Phone Price : $7.58
In Stock
Lawn Tractor Cotter Pin 714-04043
Lawn tractor cotter pin

Part #714-04043

BEST SELLER
$7.49
12% OFF Phone Price : $8.49
In Stock
Lawn & Garden Equipment Lock Washer 936-0119
#28

Tines/engine diagram

Lawn & garden equipment lock washer

Part #936-0119

This item is not returnable
$6.05
14% OFF Phone Price : $7.05
In Stock
Lawn Tractor Nut (replaces 162396, 712-0240, Hu-a901790053) 912-0240
#33

Handle/wheels diagram

Lawn tractor nut (replaces 162396, 712-0240, hu-a901790053)

Part #912-0240

This item is not returnable
$5.47
15% OFF Phone Price : $6.47
In Stock
Lawn Tractor Bolt (replaces 01000369, 1509-091, 1509-117, 153015, 706-10123-20, 706-501277-1, 710-0342, 910-3005) 710-3005
#23

Tines/engine diagram

Lawn tractor bolt (replaces 01000369, 1509-091, 1509-117, 153015, 706-10123-20, 706-501277-1, 710-0342, 910-3005)

Part #710-3005

This item is not returnable
$5.11
16% OFF Phone Price : $6.11
In Stock
Lawn & Garden Equipment Hex Nut 912-0429
#34

Handle/wheels diagram

Lawn & garden equipment hex nut

Part #912-0429

Replaced by #712-0429

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Manufacturer substitution
This part replaces 912-0429. Substitute parts can look different from the original.
This item is not returnable
In Stock
Tiller Tine Assembly (replaces 642-0003) 642-0003-0637
#3

Tines/engine diagram

Tiller tine assembly (replaces 642-0003)

Part #642-0003-0637

$81.99
6% OFF Phone Price : $86.99
In Stock
Tiller Tine, Inner Right (replaces 642-0002) 642-0002-0637
#2

Tines/engine diagram

Tiller tine, inner right (replaces 642-0002)

Part #642-0002-0637

$90.30
5% OFF Phone Price : $95.30
In Stock
Tiller Forward Drive Control Cable 946-0918
#41

Handle/wheels diagram

Tiller forward drive control cable

Part #946-0918

$36.69
12% OFF Phone Price : $41.69
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…

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

Main causes: broken shaft clevis pins, transmission failure…

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

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.

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.…

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.…

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.…