Parts and Warranty Supplement for Troy-Bilt 21-inch Walk Behind Mower
This guide provides essential parts lists, accessory information, and warranty details for Troy-Bilt 21-inch walk-behind mowers. Learn how to identify replacement parts, contact customer support, and understand your warranty coverage.
Table of contents
Important Information
This document is a Parts and Warranty Supplement for Troy-Bilt 21-inch walk-behind mowers. It is not a complete operator's manual. It provides specific information regarding replacement parts, accessories, and the terms of the limited warranty for your product.
Customer Support
If you experience difficulty assembling the product, have questions regarding controls, operation, or maintenance, or need to order replacement parts, please contact the Customer Support Department. Do not return the machine to the retailer or dealer without first contacting support.
United States: 1-800-828-5500. Website: www.troybilt.com
Canada: 1-800-668-1238. Website: www.troybilt.ca
Replacement Parts
For best performance, original equipment manufacturer (OEM) parts are recommended. When ordering parts, have your full model number and serial number ready.

Key replacement parts listed include:
- Wheels: Various sizes (7-inch, 8-inch, 11-inch) for Push, FWD, RWD, and AWD models.
- Blades: Mulching blades (Bow Tie Mount and S Mount) and High-Lift blades for improved bagging.
- Belts: Specific belts for FWD, RWD, and AWD configurations.
- Engine Maintenance: Air filters and spark plugs for 163 cc engines.
- Fluids: 10W30 Oil (17 oz and 32 oz).
Attachments and Accessories
Available accessories include blade removal tools, spark plug wrenches, oil siphons, side discharge blowers, mower covers, starter handle/cord replacements, and blade sharpener/balancer tools.
Limited Warranty Overview
The limited warranty is provided by Troy-Bilt LLC to the initial purchaser and is non-transferrable. It covers defects in materials and workmanship during the warranty period.
Warranty Periods (Gas Powered Mowers):
- Walk-Behinds (Troy-Bilt): 2 years (Note: Canada may vary).
- Walk-Behinds (Troy-Bilt XP): 3 years.
Warranty Exclusions: The warranty does not cover:
- Products purchased outside the US or Canada.
- Engine/Emission Control Systems (covered by engine manufacturer warranties).
- Damage due to lack of maintenance or improper maintenance.
- Normal wear and tear.
- Normal Wear Parts (e.g., belts, blades, grass bags, filters, spark plugs) are warranted for 30 days from the date of purchase.
- Use inconsistent with the operator's manual, including abuse or neglect.
- Alterations or modifications not approved by Troy-Bilt LLC.
How to Get Warranty Service
Repairs must be performed by an authorized Troy-Bilt service provider. You must present a copy of your sales receipt to obtain warranty service. To locate a service provider, visit the official website or call the customer support numbers provided above.
Official resources from the manual
Practical help
Common problems
Contact the Customer Support Department at 1-800-828-5500 (US) or 1-800-668-1238 (Canada) before returning the unit to the retailer.
Identify the correct part number from the tables in the supplement and contact an authorized dealer or visit the official website.
Before use
- Locate your full model number and serial number.
- Register your product at troybilt.com/register.
- Verify if your mower is Push, FWD, RWD, or AWD to select the correct replacement parts.
- Keep your sales receipt for warranty service eligibility.
Specs in practice
- 163 cc Engine
- Engine size for which the listed air filter and spark plug are compatible.
Model compatibility
- Warranty is non-transferrable.
- Parts are specific to drive type (Push, FWD, RWD, AWD).
- Normal wear parts have a limited 30-day warranty.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.