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MTD 12A-378Q795 lawn mower

MTD 12A-378Q795 lawn mower Parts

Here are the diagrams and repair parts for MTD 12A-378Q795 lawn mower, as well as links to manuals and error code tables, if available.

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Browse Parts for 12A-378Q795 Walk-Behind Mowers

  • Torsion Spring for MTD 12A-378Q795 - Part 732-04074

    Wheels/drive diagram

    Torsion Spring

    Part #732-04074

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

  • Crankshaft for MTD 12A-378Q795 - Part 748-0358

    Handle/grassbag diagram

    Crankshaft

    Part #748-0358

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

  • Pawl for MTD 12A-378Q795 - Part 748-0188B

    Wheels/drive diagram

    Pawl

    Part #748-0188B

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

  • Output Shaft for MTD 12A-378Q795 - Part 711-1168

    Transmission diagram

    Output Shaft

    Part #711-1168

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

  • Endless Chain for MTD 12A-378Q795 - Part 713-0421

    Wheels/drive diagram

    Endless Chain

    Part #713-0421

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

  • Bearing for MTD 12A-378Q795 - Part 741-0674

    Transmission diagram

    Bearing

    Part #741-0674

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

  • Flange Spacer for MTD 12A-378Q795 - Part 7501050

    Transmission diagram

    Flange Spacer

    Part #7501050

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

  • Front Baffle (not Shown0 for MTD 12A-378Q795 - Part 782-5014

    Handle/grassbag diagram

    Front Baffle (not Shown0

    Part #782-5014

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

  • Brkt. Asm. I for MTD 12A-378Q795 - Part 682-0027A

    Transmission diagram

    Brkt. Asm. I

    Part #682-0027A

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

  • Grass Bag for MTD 12A-378Q795 - Part 664-0080

    Handle/grassbag diagram

    Grass Bag

    Part #664-0080

    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.

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

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

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

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

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

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

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.

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.…

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.…

Repair time and Difficulty

 60 minutes or less
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…

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.

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…

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…

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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