Transmission Drive Belt Pulley Repair Kit GX20286 GX20287 GX20006 for John D-eere L100 Series Mowers, Replaces 1760097, 690409, 690409MA, GX20006

What It Is

This Transmission Drive Belt Pulley Repair Kit includes the pulley, belt, and hardware needed to replace the worn drive system on John Deere L100 series lawn tractors. It’s designed for the transmission-to-engine belt setup that powers the mower’s forward/reverse motion.

Fitment & Compatibility

• Models: John Deere L100, L110, L118, L120, L130 (and some L1xx/L2xx variants). Confirm your model number on the frame tag.
• Deck size: Works with 42-inch and 48-inch decks, but the kit is for the transmission drive, not the mower deck belt.
• OEM vs aftermarket: Replaces OEM part numbers 1760097, 690409, 690409MA, GX20006. Aftermarket kit, so check pulley diameter (stock is ~4.5 inches) and belt length (about 83 inches) against your original.
• What to measure: Belt width (should be 1/2 inch) and pulley shaft bore (5/8 inch). If your pulley or belt is different, this kit won’t fit.

Key Things to Know

• Quality: Buyers report the pulley and belt are decent for the price, but some note the belt may be slightly thinner than OEM—expect slightly shorter lifespan.
• Installation difficulty: Moderate. Requires removing the mower deck and accessing the transmission pulley under the frame. Have a socket set and a pry bar for belt tension.
• Common gotcha: The kit includes a new pulley, but the original pulley’s keyway or retaining clip might not match perfectly—check your old parts before installing.
• Tip: Replace the belt and pulley together to avoid premature wear on a new belt with an old pulley.

Should You Buy It

This is a solid budget fix for a worn drive belt or pulley on an older L100 series mower. If you’re handy with basic tools and want to save money over a dealer repair, it’ll get you mowing again. For heavy commercial use or if you need OEM durability, stick with John Deere parts.