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Cub Cadet 12B-999I100 gas lawn mower Parts

Here are the diagrams and repair parts for Cub Cadet 12B-999I100 gas lawn mower, as well as links to manuals and error code tables, if available.

Cub Cadet 12B-999I100 gas lawn mower
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Browse Parts for 12B-999I100 Walk-Behind Mowers

  • Lawn Tractor Cable Tie for Cub Cadet 12B-999I100 - Part 726-0178

    Deck/chute diagram

    Lawn & Garden Equipment Cable Tie

    Part #725-0157

    Replaced by #726-0178

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    Manufacturer substitution
    This part replaces 725-0157. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $25.35
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  • Lawn Mower Grass Bag Frame for Cub Cadet 12B-999I100 - Part 747-0937-0637

    Handle/bag/cover diagram

    Upper Frame

    Part #747-0937

    Replaced by #747-0937-0637

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    Manufacturer substitution
    This part replaces 747-0937. Substitute parts can look different from the original.
    In Stock
    $87.12
    6% OFF Phone Price : $93.12Info Icon
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  • Lawn Mower Lower Handle for Cub Cadet 12B-999I100 - Part 749-0907B-0637

    Handle/bag/cover diagram

    Handle

    Part #749-0907A

    Replaced by #749-0907B-0637

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    Manufacturer substitution
    This part replaces 749-0907A. Substitute parts can look different from the original.
    In Stock
    $76.98
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  • Mtd Lawn Mower Extension Spring for Cub Cadet 12B-999I100 - Part 932-0849A

    Transmission assembly diagram

    Extension Spring

    Part #732-0849A

    Replaced by #932-0849A

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    Manufacturer substitution
    This part replaces 732-0849A. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $29.61
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  • Lawn Mower Axle Assembly, Right Rear for Cub Cadet 12B-999I100 - Part 938-0012A

    Deck/chute diagram

    Axle Assembly

    Part #638-0012

    Replaced by #938-0012A

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    Manufacturer substitution
    This part replaces 638-0012. Substitute parts can look different from the original.
    In Stock
    $90.05
    6% OFF Phone Price : $96.05Info Icon
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  • Lawn Mower Drive Gear, 3-tooth for Cub Cadet 12B-999I100 - Part 913-0397

    Handle/bag/cover diagram

    Gear Insert

    Part #713-0397

    Replaced by #913-0397

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    Manufacturer substitution
    This part replaces 713-0397. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $9.46
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  • Thrust Washer for Cub Cadet 12B-999I100 - Part 736-0569

    Transmission assembly diagram

    Thrust Washer

    Part #736-0569

    The manufacturer no longer makes this part, and there's no substitute part

  • Flat Washer for Cub Cadet 12B-999I100 - Part 736-0570

    Transmission assembly diagram

    Flat Washer

    Part #736-0570

    The manufacturer no longer makes this part, and there's no substitute part

  • Shaft Asm O0 for Cub Cadet 12B-999I100 - Part 611-0066

    Transmission assembly diagram

    Shaft Asm O0

    Part #611-0066

    The manufacturer no longer makes this part, and there's no substitute part

  • Hsgasmuppe02 for Cub Cadet 12B-999I100 - Part 618-0253

    Transmission assembly diagram

    Hsgasmuppe02

    Part #618-0253

    The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to replace a lawn mower front deck tray

How to replace a lawn mower front deck tray

Learn how to replace the front deck tray on your lawn mower if it's cracked or damaged.…

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Repair time and Difficulty

 60 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

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How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

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Repair time and Difficulty

 45 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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The best time of day to mow grass (and when you should absolutely not)

The best time of day to mow grass (and when you should absolutely not)

Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…

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Top 10 electric lawn and garden tools

Top 10 electric lawn and garden tools

Learn about the top 10 must-have electric lawn & garden tools for 2023…

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…

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