Parts for 25B551A700 — MTD

We found 12 parts confirmed to fit the MTD 25B551A700.

Same parts list as 25B550C029 (MTD). 25B551A700 shares an identical confirmed parts list with 25B550C029 (MTD). That page is the canonical version of this parts list — use it if you want the primary reference, or stay here since the list below is exactly the same for 25B551A700.

Compatibility table

All 12 confirmed parts, ordered so parts that fit fewer models (more specific to this appliance) appear first.
Part #PartAlso fitsReference price
78701081AIndex Bracket10 models$31.55 · Amazon
78701304Troy-Bilt Frame:Edger11 models$111.84 · Amazon
75404032BV-Belt16 models$36.54 · Amazon
74704110Adjuster Rod21 models$26.53 · Amazon
74904234Edger Lower Handle22 models$75.42 · Amazon
7810427Belt Guard23 models— · Amazon
7810748Blade Tri-c25 models$35.22 · Amazon
7810080Blade38 models$12.85 · Amazon
72004072Knob181 models$4.49 · Amazon
71204063Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-181,010 models$5.45 · Amazon
71204065MTD Yard Machines Lawn Tractor Flange Nut1,047 models$6.24 · Amazon
7100599MTD Lawn Tractor Screw1,116 models$5.81 · Amazon

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 25B-551A700: 78701081A (Index Bracket), 74904234 (Edger Lower Handle), 72004072 (Knob), 7100599 (MTD Lawn Tractor Screw).

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 25B-551A700: 78701304 (Troy-Bilt Frame:Edger), 74704110 (Adjuster Rod), 7810748 (Blade Tri-c), 7810080 (Blade), 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 25B-551A700: 75404032B (V-Belt), 7810427 (Belt Guard).

Before you buy

Match 25B551A700 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.