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 21AA45M5099 rear-tine tiller

MTD 21AA45M5099 rear-tine tiller Parts

Here are the diagrams and repair parts for MTD 21AA45M5099 rear-tine tiller, as well as links to manuals and error code tables, if available.

By Schematic
By Part
SELECT DIAGRAM
?

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

Browse Parts for 21AA45M5099 Tillers

  • Tiller Input Shaft for MTD 21AA45M5099 - Part 711-1349B

    Gears/housing diagram

    Input Shaft

    Part #711-1349

    Replaced by #711-1349B

    Info Icon
    Manufacturer substitution
    This part replaces 711-1349. Substitute parts can look different from the original.
    In Stock
    $111.14
    Minus Item
    Qty
    Plus Item
  • Jackshaft for MTD 21AA45M5099 - Part 738-04424A

    Gears/housing diagram

    Jackshaft Shaft

    Part #738-04424

    Replaced by #738-04424A

    Info Icon
    Manufacturer substitution
    This part replaces 738-04424. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $51.02
    Minus Item
    Qty
    Plus Item
  • Mtd Lawn & Garden Equipment Hex Nut for MTD 21AA45M5099 - Part 712-3010

    Engine/tines/wheels diagram

    Lawn & Garden Equipment Hex Nut

    Part #912-3010

    Replaced by #712-3010

    Info Icon
    Manufacturer substitution
    This part replaces 912-3010. Substitute parts can look different from the original.
    In Stock
    $55.59
    10% OFF Phone Price : $61.59Info Icon
    Minus Item
    Qty
    Plus Item
  • Ryobi Lawn & Garden Equipment Lock Washer for MTD 21AA45M5099 - Part 736-0921

    Handles/tine shield diagram

    Lawn & Garden Equipment Lock Washer

    Part #936-0921

    Replaced by #736-0921

    Info Icon
    Manufacturer substitution
    This part replaces 936-0921. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $8.20
    Minus Item
    Qty
    Plus Item
  • Mtd Tiller Gear Case Shaft Spur Gear, 44-tooth for MTD 21AA45M5099 - Part 717-1582B

    Gears/housing diagram

    Spur Gear

    Part #717-1582

    Replaced by #717-1582B

    Info Icon
    Manufacturer substitution
    This part replaces 717-1582. Substitute parts can look different from the original.
    In Stock
    $92.11
    35% OFF Was : $141.39Info Icon
    Minus Item
    Qty
    Plus Item
  • Tiller Idler Pulley for MTD 21AA45M5099 - Part 917-0059B

    Gears/housing diagram

    Tiller Idler Pulley

    Part #617-0059

    Replaced by #917-0059B

    Info Icon
    Manufacturer substitution
    This part replaces 617-0059. Substitute parts can look different from the original.
    In Stock
    $145.85
    8% OFF Phone Price : $157.85Info Icon
    Minus Item
    Qty
    Plus Item
  • Mtd Lawn & Garden Equipment Spiral Pin for MTD 21AA45M5099 - Part 715-0120

    Engine/tines/wheels diagram

    Shear Pin

    Part #915-0120

    Replaced by #715-0120

    Info Icon
    Manufacturer substitution
    This part replaces 915-0120. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $18.96
    10% OFF Phone Price : $20.96Info Icon
    Minus Item
    Qty
    Plus Item
  • Mtd Tiller Wheel for MTD 21AA45M5099 - Part 934-04654

    Engine/tines/wheels diagram

    Complete Wheel

    Part #634-04654

    Replaced by #934-04654

    Info Icon
    Manufacturer substitution
    This part replaces 634-04654. Substitute parts can look different from the original.
    In Stock
    $215.90
    5% OFF Phone Price : $227.90Info Icon
    Minus Item
    Qty
    Plus Item
  • Tiller Tine Input Sprocket Assembly for MTD 21AA45M5099 - Part 617-0060A

    Gears/housing diagram

    Tiller Tine Input Sprocket Assembly

    Part #617-0060

    Replaced by #617-0060A

    Info Icon
    Manufacturer substitution
    This part replaces 617-0060. Substitute parts can look different from the original.
    In Stock
    $209.91
    5% OFF Phone Price : $221.91Info Icon
    Minus Item
    Qty
    Plus Item
  • Belt Cover Bracket Assembly for MTD 21AA45M5099 - Part 686-0111

    Engine/tines/wheels diagram

    Tiller Bracket Assembly

    Part #686-0111-0637

    Replaced by #686-0111

    Info Icon
    Manufacturer substitution
    This part replaces 686-0111-0637. Substitute parts can look different from the original.
    In Stock
    $34.66
    Minus Item
    Qty
    Plus Item

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

Lawn Tractor E85 Fuel Decal 777X43688

Lawn Tractor E85 Fuel Decal

Part #777X43688
In Stock
$18.09
Minus Item
Qty
Plus Item
Kmart Tiller Decal 777S33508

Kmart Tiller Decal

Part #777S33508
In Stock
$19.00
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
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.…

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

Dryer
Shop GE DBXR463EG7WW dryer partsShop LG DLE5932W dryer partsShop Samsung DVG45N5300F/A3-00 dryer parts
Front-Engine Lawn Tractor
Shop Yard King 50565X89 front-engine lawn tractor parts
Gas Snowblower
Shop Craftsman 536886811 gas snowblower parts
Parts
Refrigerator Door Hinge 4775JA2113A partsRefrigerator Evaporator Drip Pan WPW10655368 partsRefrigerator Electronic Control Board EBR64585307 partsHome Electronics Panel RXX1471Treadmill Foot, Rear 157096 partsHome Electronics Post VXP0444Stand Mixer Worm Follower Gear W11086780 partsCapillary 67201003Microwave Electronic Control Board DE92-03560A parts25d73823c01 2573823C01C Cabinet 14-11023-01Home Electronics Capacitor 24086014Washer Dispenser Drawer Assembly AGL74074375 parts
Side-By-Side Refrigerator
Shop GE PSDS5YGXCFSS side-by-side refrigerator parts
Washer
Shop GE WPSE4200A0WW washer parts