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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

  • Lawn & Garden Equipment Shoulder Screw for MTD 21A-450 - Part 938-0849

    Handle/tine adapter/shield diagram

    Shoulder Screw

    Part #738-0849

    Replaced by #938-0849

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    Manufacturer substitution
    This part replaces 738-0849. Substitute parts can look different from the original.
    In Stock
    $18.49
    Minus Item
    Qty
    Plus Item
  • Handle Asm-u for MTD 21A-450 - Part 649-0041B-0650

    Handle/tine adapter/shield diagram

    Upper Handle Assembly

    Part #649-0041

    Replaced by #649-0041B-0650

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    Manufacturer substitution
    This part replaces 649-0041. Substitute parts can look different from the original.
    In Stock
    $283.10
    Minus Item
    Qty
    Plus Item
  • Mtd Lawn & Garden Equipment Hex Nut for MTD 21A-450 - Part 712-3010

    Outer and inner engine pulley/wheels diagram

    Hex Nut

    Part #712-0267

    Replaced by #712-3010

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    Manufacturer substitution
    This part replaces 712-0267. Substitute parts can look different from the original.
    In Stock
    $55.59
    10% OFF Phone Price : $61.59Info Icon
    Minus Item
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  • Tiller Spacer for MTD 21A-450 - Part 950-0570

    Gear case assembly diagram

    Spacer

    Part #750-0570

    Replaced by #950-0570

    Info Icon
    Manufacturer substitution
    This part replaces 750-0570. Substitute parts can look different from the original.
    In Stock
    $18.49
    Minus Item
    Qty
    Plus Item
  • Ryobi Tiller Spacer for MTD 21A-450 - Part 750-0885A

    Handle/tine adapter/shield diagram

    Spacer

    Part #750-0885

    Replaced by #750-0885A

    Info Icon
    Manufacturer substitution
    This part replaces 750-0885. Substitute parts can look different from the original.
    In Stock
    $21.00
    Minus Item
    Qty
    Plus Item
  • Bracket Tine for MTD 21A-450 - Part 786-0179-0637

    Handle/tine adapter/shield diagram

    Bracket Tine

    Part #786-0179

    Replaced by #786-0179-0637

    Info Icon
    Manufacturer substitution
    This part replaces 786-0179. Substitute parts can look different from the original.
    In Stock
    $107.70
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Flat Washer for MTD 21A-450 - Part 936-0117

    Handle/tine adapter/shield diagram

    Washer

    Part #736-0117

    Replaced by #936-0117

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    Manufacturer substitution
    This part replaces 736-0117. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $13.00
    Minus Item
    Qty
    Plus Item
  • Compression Spring for MTD 21A-450 - Part 932-0496

    Gear case assembly diagram

    Compression Spring

    Part #732-0496

    Replaced by #932-0496

    Info Icon
    Manufacturer substitution
    This part replaces 732-0496. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.77
    Minus Item
    Qty
    Plus Item
  • Tiller Flat Washer for MTD 21A-450 - Part 936-0208

    Handle/tine adapter/shield diagram

    Flat Washer

    Part #736-0208

    Replaced by #936-0208

    Info Icon
    Manufacturer substitution
    This part replaces 736-0208. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.37
    Minus Item
    Qty
    Plus Item
  • Tiller Spacer for MTD 21A-450 - Part 950-0671

    Gear case assembly diagram

    Spacer

    Part #750-0671

    Replaced by #950-0671

    Info Icon
    Manufacturer substitution
    This part replaces 750-0671. Substitute parts can look different from the original.
    In Stock
    $21.00
    Minus Item
    Qty
    Plus Item

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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