Stens 266-285 OEM Replacement Belt Compatible with/Replacement for Toro 20199, 20975, 20976, 20977, 20978, 21199, 21199HD, 21810, 21200, 22200 and 22205TE Model Timemaster Lawn mowers 121-5765,Black

What It Is

This is an OEM replacement belt (Stens 266-285) for Toro Timemaster lawn mowers, designed to drive the cutting deck blades. It replaces the worn-out factory belt on select 30-inch and 34-inch Timemaster models, restoring proper blade engagement and cutting performance.

Fitment & Compatibility

Before buying, verify your mower model number—this belt fits Toro Timemaster models 20199, 20975, 20976, 20977, 20978, 21199, 21199HD, 21810, 21200, 22200, and 22205TE. It replaces OEM part numbers 121-5765 and Toro 20199/20975-series belts. Measure your existing belt length (should be ~116 inches) and width (1/2 inch) to confirm. This is an aftermarket replacement, not genuine Toro, but matched to OEM specs. Does not fit standard 22-inch or 30-inch walk-behind mowers—only Timemaster decks.

Key Things to Know

• Quality match: Stens is a reputable aftermarket brand; this belt uses Kevlar cord for durability similar to OEM.
• Installation difficulty: Moderate—requires removing the deck belt guard, releasing tension from the idler pulley, and routing around all pulleys. A belt diagram is helpful.
• Common gotcha: The belt may feel tight on new install; ensure the idler arm moves freely. Do not force it onto the blade pulley without proper tension release.
• Check pulleys first: Worn or seized pulleys will cause premature belt wear. Inspect all deck pulleys for smooth rotation before replacing the belt.

Should You Buy It

If you own a compatible Toro Timemaster and need a reliable, cost-effective replacement (under $17 vs. $25+ for OEM), this belt is a solid choice. It’s ideal for DIY maintenance when the original belt is cracked, stretched, or slipping. Not for commercial use or mowers with deck damage—those warrant OEM parts for exact fit.