Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Please enter one or more characters
Scan Icon
Tips to find your model number
Water filters
Water filter finder tool
DIY help
Featured products
Top brands
View all parts by brand
Top products and services
Products by brand
Orders
Customer Service
Schedule a repair

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.

MTD 21A-450 rear tine gas tiller
By Schematic
By Part
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for 21A-450 Tillers

  • 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
    Minus Item
    Qty
    Plus Item
  • 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

    Info Icon
    Manufacturer substitution
    This part replaces 754-0434. Substitute parts can look different from the original.
    Get free shipping with Automatic Reorder
    In Stock
    $68.47
    Minus Item
    Qty
    Plus Item
  • Mtd Lawn Tractor Ball Bearing for MTD 21A-450 - Part 941-0600

    Gear case assembly diagram

    Bearing

    Part #741-0124

    Replaced by #941-0600

    Info Icon
    Manufacturer substitution
    This part replaces 741-0124. Substitute parts can look different from the original.
    In Stock
    $19.56
    9% OFF Phone Price : $21.56Info Icon
    Minus Item
    Qty
    Plus Item
  • Yard Machines Lawn & Garden Equipment Bell Washer for MTD 21A-450 - Part 736-0242

    Yard Machines Lawn & Garden Equipment Bell Washer

    Part #736-0242
    In Stock
    $9.11
    10% OFF Phone Price : $10.11Info Icon
    Minus Item
    Qty
    Plus Item
  • 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

    Info Icon
    Manufacturer substitution
    This part replaces 736-0119. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $7.16
    12% OFF Phone Price : $8.16Info Icon
    Minus Item
    Qty
    Plus Item
  • Ryobi Lawn Tractor Screw for MTD 21A-450 - Part 710-0376

    Gear case assembly diagram

    Ryobi Lawn Tractor Screw

    Part #710-0376
    This item is not returnable
    In Stock
    $6.05
    14% OFF Phone Price : $7.05Info Icon
    Minus Item
    Qty
    Plus Item
  • 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

    Info Icon
    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
    Minus Item
    Qty
    Plus Item
  • Washer for MTD 21A-450 - Part 736-0463

    Outer and inner engine pulley/wheels diagram

    Washer

    Part #736-0463
    This item is not returnable
    In Stock
    $8.20
    Minus Item
    Qty
    Plus Item
  • Cotter Pin for MTD 21A-450 - Part 714-0149B

    Handle/tine adapter/shield diagram

    Cotter Pin

    Part #714-0149B
    This item is not returnable
    In Stock
    $6.63
    Minus Item
    Qty
    Plus Item
  • Mtd Lawn Tractor Screw for MTD 21A-450 - Part 710-0604A

    Gear case assembly diagram

    Mtd Lawn Tractor Screw

    Part #710-0604A
    This item is not returnable
    In Stock
    $6.63
    13% OFF Phone Price : $7.63Info Icon
    Minus Item
    Qty
    Plus Item

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

View all

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…

Read more

Why does my tiller's engine run roughly or misfire?

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

Read more

Why won't my tiller's engine start?

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

Read more

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

Main causes: broken shaft clevis pins, transmission failure…

Read more

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…

Read more

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

Main causes: clutch cable problems, faulty transmission…

Read more

Why won't my tillers wheels or tines turn?

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

Read more

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.

View all
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…

Read more

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.

View all
Fall garden care: to till or not to till? Here’s how to decide

Fall garden care: to till or not to till? Here’s how to decide

Thinking about tilling your garden this fall? Learn the pros and cons of fall tilling, when it makes sense, and how to p…

Read more
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.…

Read more
Tiller common questions

Tiller common questions

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

Read more

Parts & More

Air Compressor
Craftsman 900150350 air compressor parts
Dryer
Samsung DVG45M5500P/A3-00 dryer partsSamsung DV422GWHDWR/AA-00 dryer parts
Electric Range
Frigidaire FEF366CCE electric range parts
Front-Engine Lawn Tractor
Craftsman 917273020 front-engine lawn tractor parts
Garage Door Opener
Craftsman 139654002 garage door opener parts
Mechanical Sewing Machine
Kenmore 38515358600 mechanical sewing machine parts
Parts
Lawn Tractor Headlight Lens, Left 184246X599Free Wheel Rod 1721622SMDryer Wire Harness EAD60946201Lawn Tractor 46-in Deck Mulching Blade 33286Lawn Tractor 48-in Deck Bagging Blade 588811002Lawn & Garden Equipment Engine Standard Piston Ring Set 40013Range Surface Burner Valve WPW10206287Range Lock Adjusting Screw 318147811Tiller Handle Grip 720-0278ARefrigerator Inverter EBR64173903Refrigerator Door Handle WPW10298179
Top-Mount Refrigerator
Kenmore 25360082417 top-mount refrigerator parts
Washer
Maytag LAT2301AAE washer parts