Parts for 999 — Troybilt

We found 23 parts confirmed to fit the Troybilt 999.

Compatibility table

All 23 confirmed parts, ordered so parts that fit fewer models (more specific to this appliance) appear first.
Part #PartAlso fitsReference price
6829026A0637CASTER BRACK8 models$109.50 · Amazon
9461131Lawn Mower Zone Control Cable8 models$44.69 · Amazon
6829026A0629CASTER BRACK9 models$109.50 · Amazon
6829024Caster Bracket9 models$110.67 · Amazon
7111114Pivot Shaft9 models$9.67 · Amazon
6829020AWalk-Behind Lawn Mower Caster Assembly9 models$100.13 · Amazon
7820078B"deck-21"" W10 models$214.54 · Amazon
7100111Craftsman Carriage Bolt10 models$29.70 · Amazon
7827597Lawn Mower Control Arm Pivot Bracket10 models$17.14 · Amazon
7360366Lawn & Garden Equipment Flat Washer11 models$8.00 · Amazon
7200270AReverse Grip11 models$36.54 · Amazon
7101250Sears Lawn & Garden Equipment Carriage Bolt15 models$8.34 · Amazon
7342044Wheel18 models$70.15 · Amazon
6829026Lawn Mower Bracket Assembly28 models$109.50 · Amazon
7100642MTD Lawn Tractor Screw (710-0642)65 models$6.74 · Amazon
7210325MTD Lawn & Garden Equipment Plastic Plug66 models$8.00 · Amazon
7200241Knob Assembly88 models$11.23 · Amazon
7410600Ball Bearing106 models— · Amazon
7560625MTD Lawn Mower Roller Wheel107 models$14.63 · Amazon
7123004AAce Lawn & Garden Equipment Flange Lock Nut187 models$5.81 · Amazon
7120397Wing Nut198 models$2.16 · Amazon
7420741Blade-21" Mu216 models$17.37 · Amazon
7100703MTD Lawn & Garden Equipment Carriage Bolt397 models$7.62 · 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 999: 6829026A0637 (CASTER BRACK), 6829026A0629 (CASTER BRACK), 6829024 (Caster Bracket), 7827597 (Lawn Mower Control Arm Pivot Bracket), 6829026 (Lawn Mower Bracket Assembly), 7100642 (MTD Lawn Tractor Screw (710-0642)), 7200241 (Knob Assembly).

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 999: 9461131 (Lawn Mower Zone Control Cable), 7111114 (Pivot Shaft), 6829020A (Walk-Behind Lawn Mower Caster Assembly), 7820078B ("deck-21"" W), 7100111 (Craftsman Carriage Bolt), 7360366 (Lawn & Garden Equipment Flat Washer), 7200270A (Reverse Grip), 7101250 (Sears Lawn & Garden Equipment Carriage Bolt), 7342044 (Wheel), 7210325 (MTD Lawn & Garden Equipment Plastic Plug), 7410600 (Ball Bearing), 7123004A (Ace Lawn & Garden Equipment Flange Lock Nut), 7120397 (Wing Nut), 7420741 (Blade-21" Mu), 7100703 (MTD Lawn & Garden Equipment Carriage Bolt).

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 999: 7560625 (MTD Lawn Mower Roller Wheel).

Before you buy

Match 999 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.