731-07131 Lawn Mower Side Discharge Grass Chute Compatible with Cub Cadet/MTD/Craftsman, for Murray/Troy-Bilt Walk-Behind mowers Parts Replacement Par TB110, TB130, TB200, TB230, TB240

What It Is

This is a replacement side discharge grass chute (part 731-07131) for select Cub Cadet, MTD, Craftsman, Murray, and Troy-Bilt walk-behind mowers. It directs clippings out the side of the deck while keeping debris from kicking back at you.

Fitment & Compatibility

Before buying, confirm your mower’s deck size (usually 21” or 22”) and check the OEM part number. This chute replaces 731-07131 and fits models like Troy-Bilt TB110, TB130, TB200, TB230, TB240, and Cub Cadet SC100, SC300, SC900. It also works with many MTD and Craftsman push mowers from the 2000s onward. Measure the mounting bracket width and pin hole spacing (typically 2.5” to 3”) to ensure a match. If your mower has a different deck shape or a mulching plug that blocks the chute opening, this won’t fit.

Key Things to Know

• Material: Molded plastic—lightweight but can crack if you hit a rock or curb. Inspect the mounting tabs carefully before installation.
• Installation: Tool-free snap-on design. Align the chute with the deck bracket and push down until it clicks. If it’s loose, the bracket may be bent.
• Common gotcha: Some mowers require removing the mulching baffle or plug first. If your deck has a separate metal deflector, this chute replaces it entirely.
• OEM vs aftermarket: This is an aftermarket part. It fits correctly but may have slightly thinner plastic than OEM. Fine for occasional use; expect shorter lifespan under heavy abuse.

Should You Buy It

If you need a budget-friendly replacement for a lost or cracked side discharge chute on a compatible MTD-family push mower, this is a solid pick. It’s easy to install and works as intended for typical residential mowing. Avoid if you need OEM-grade durability for commercial use or if your deck size doesn’t match.