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MTD 21A-450 rear tine gas tiller

MTD 21A-450 rear tine gas tiller Parts

Here are the diagrams and repair parts for MTD 21A-450 rear tine gas tiller, as well as links to manuals and error code tables, if available.

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Browse Parts for 21A-450 Tillers

  • Tiller Drive Belt for MTD 21A-450 - Part 954-0434

    Outer and inner engine pulley/wheels diagram

    Belt-v 1/2x5

    Part #754-0434

    Replaced by #954-0434

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    Manufacturer substitution
    This part replaces 754-0434. Substitute parts can look different from the original.
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    In Stock
    $68.47
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  • Mtd Lawn Tractor Screw for MTD 21A-450 - Part 710-0599

    Mtd Lawn Tractor Screw

    Part #710-0599
    This item is not returnable
    In Stock
    $5.64
    15% OFF Phone Price : $6.64Info Icon
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  • Mtd Lawn & Garden Equipment Lock Washer for MTD 21A-450 - Part 936-0119

    Outer and inner engine pulley/wheels diagram

    Lock Washer

    Part #736-0119

    Replaced by #936-0119

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    Manufacturer substitution
    This part replaces 736-0119. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.16
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  • Lawn Tractor Tire Valve Stem for MTD 21A-450 - Part 934-0255

    Outer and inner engine pulley/wheels diagram

    Air Valve

    Part #734-0255

    Replaced by #934-0255

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    Manufacturer substitution
    This part replaces 734-0255. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.54
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  • Mtd Lawn Tractor Bolt for MTD 21A-450 - Part 710-3005

    Handle/tine adapter/shield diagram

    Mtd Lawn Tractor Bolt

    Part #710-3005
    This item is not returnable
    In Stock
    $6.05
    14% OFF Phone Price : $7.05Info Icon
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  • Lawn & Garden Equipment Knob for MTD 21A-450 - Part 712-0421

    Handle/tine adapter/shield diagram

    Tiller Wing Nut

    Part #712-0421

    Replaced by #712-0421

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    Manufacturer substitution
    This part replaces 712-0421. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.90
    26% OFF Phone Price : $3.90Info Icon
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  • Tiller Control Cable for MTD 21A-450 - Part 946-1117

    Outer and inner engine pulley/wheels diagram

    Tiller Clutch Cable

    Part #746-1117

    Replaced by #946-1117

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    Manufacturer substitution
    This part replaces 746-1117. Substitute parts can look different from the original.
    In Stock
    $89.15
    6% OFF Phone Price : $95.15Info Icon
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  • Lawn & Garden Equipment Hex Nut for MTD 21A-450 - Part 712-0429

    Handle/tine adapter/shield diagram

    Lawn & Garden Equipment Hex Nut

    Part #712-0429
    In Stock
    $35.39
    14% OFF Phone Price : $41.39Info Icon
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  • Snowblower Ball Bearing for MTD 21A-450 - Part 941-0563

    Gear case assembly diagram

    Ball Bearing

    Part #741-0563

    Replaced by #941-0563

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    Manufacturer substitution
    This part replaces 741-0563. Substitute parts can look different from the original.
    In Stock
    $44.09
    12% OFF Phone Price : $50.09Info Icon
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  • Mtd Tiller Tine for MTD 21A-450 - Part 742-0305A-0637

    Handle/tine adapter/shield diagram

    13" Articula

    Part #742-0305

    Replaced by #742-0305A-0637

    Info Icon
    Manufacturer substitution
    This part replaces 742-0305. Substitute parts can look different from the original.
    In Stock
    $22.51
    21% OFF Phone Price : $28.51Info Icon
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Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

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

Main causes: clutch cable problems, faulty transmission…

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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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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 time and Difficulty

 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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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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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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Tiller common questions

Tiller common questions

These frequently asked questions might help you figure out what's wrong with your garden tiller.…

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