Parts for 40M — MTD
We found 58 parts confirmed to fit the MTD 40M.
Compatibility table
Prices shown are an informational reference range only, not an offer or an Amazon price — RepairKitHub does not sell parts directly. Each part links to an Amazon search so you can compare current listings yourself.
Common failure areas on this model
The confirmed parts above group into a handful of failure areas. Here is what each points to and how to check it before you order anything.
Storage, trim and cosmetic hardware
Symptom: A cracked shelf, broken door bin, worn hinge, or missing trim piece -- cosmetic and storage wear rather than a functional breakdown.
Check: Match the physical dimensions and mounting tabs of the old part before ordering; these pieces are often model-specific even between visually similar models.
Parts in this group on 40M: 78604345 (LH HANDLE BRACKET), 78604356A0638 (BRACKET-DEPT), 7860113A0638 (Shield), 78604357A0638 (BRACKET-CABL), 73106253B (Cover), 73804320 (Lawn & Garden Equipment Shoulder Screw), 78604358 (Return Bracket), 786043630638 (Tail Bracket), 786043640638 (Tail Bracket), 686040980638 (Handle Assembly), 95110654 (Lawn & Garden Equipment Engine Spring), 7500885A (Ryobi Tiller Spacer), 786043430638 (Troy-Bilt Bracket-Idle), 78604346 (Troy-Bilt Bracket-Idle), 95112533 (Lawn & Garden Equipment Engine Fuel Tank Cap), 73204276A (MTD Lawn Tractor Spring), 7100599 (MTD Lawn Tractor Screw).
Door and drum seals
Symptom: A door or drum seal that has lost its grip, letting water or conditioned air escape past it.
Check: Inspect the seal for tears, flattening, or gaps, and check it against your model's part number before ordering.
Parts in this group on 40M: 95110802A (Lawn & Garden Equipment Engine Gasket Set).
General hardware and mounting parts
Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.
Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.
Parts in this group on 40M: 642040710638 (Tiller Tine Assembly, Left), 786043600638 (Bumper), 95110790 (Kmart Lawn & Garden Equipment Engine Recoil Starter Assembly), 95110818 (Kmart Tiller Air Filter), 642040720638 (Tiller Tine Assembly, Right), 95110798A (Tiller Short Block), 95112783 (Lawn & Garden Equipment Engine Huayi 170HA Carburetor Kit), 786041040638 (Depth Drive Bar), 95110806 (Kmart Lawn & Garden Equipment Engine Air Filter Base), 72104271 (Plug), 7470432 (Ryobi Tiller Rear Guard Connecting Rod), 7160204 (Tiller Retainer Ring), 72104232 (Tiller Tine Shaft Oil Seal), 91804815A (Tiller Transmission Assembly), 91704381 (Tiller Worm Gear), 95110648 (MTD Lawn & Garden Equipment Engine Push Rod Kit), 7200270A (Reverse Grip), 91105028 (Worm Shaft), 55073 (Drag Bar-tuf), 95110799 (Kmart Cylinder Head), 95110657 (Kmart Stud 8 X 3), 94604506 (Tiller Forward Drive Control Cable), 94604504 (Tiller Reverse Cable), 95112159 (Lawn & Garden Equipment Engine Fuel Tank), 95110792 (Kmart Lawn & Garden Equipment Engine Ignition Coil), 63105020AP (MTD Lawn and Garden Equipment Engine Dipstick Assembly), 95110651 (MTD Lawn and Garden Equipment Engine Fuel Filter), 95110794 (Kmart Lawn & Garden Equipment Engine Air Filter), 95112785 (Carburetor Assembl), 7120421 (Tiller Wing Nut), 9360119 (MTD Lawn & Garden Equipment Lock Washer), 71204063 (Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18), 71204065 (MTD Yard Machines Lawn Tractor Flange Nut).
Drive system (belts, pulleys, motors)
Symptom: A drum or tub that won't turn, a burning-rubber smell, or a loud thump or squeal during a cycle.
Check: With power off, turn the drum or tub by hand -- resistance or grinding points to the motor or a bearing, and a cracked, glazed, or snapped belt is visible once the cabinet is open.
Parts in this group on 40M: 73106529 (Tiller Belt Cover), 75604198A (Tiller Engine Pulley), 75604355 (Tiller Transmission Pulley), 78604312 (Idler Bracket), 1916658 (Reverse Belt), 1916657 (Belt), 7560625 (MTD Lawn Mower Roller Wheel).
Before you buy
Match 40M exactly against the model and serial plate on the appliance itself before ordering anything — a single mismatched character can point to a different production run with different parts. Then check the part number printed or stamped on the part you are replacing against the part numbers in the table above; the printed number is the most reliable way to confirm fitment when a model has gone through multiple production runs. RepairKitHub does not sell parts directly — every part link above routes to an Amazon search for that part number so you can compare current listings and sellers yourself.
How to confirm this is your model
Check inside a door opening, on a back or side panel, or behind a removable panel or drawer for a label printed with the model and serial number. Match every character exactly, including letters and dashes at the end — appliance model numbers often have similar prefixes but different suffixes for different production runs.
Other models with this exact parts list
Each model below is confirmed to share the identical compatible-parts list with this one.
Still not sure?
Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.