XT675 149cc XT650 Carburetor for Kohler 14 853 68-S 1485368S XT6 6.5hp 6.75hp XT675-2070 Engine Toro 20371 20377 20378 20171 Lawn Mower with 14 083 15-S Filter

What It Is

This is a complete aftermarket carburetor assembly (with pre-installed gaskets and fuel filter) designed to replace the OEM Kohler 14 853 68-S unit on Toro lawn mowers powered by the Kohler XT675-2070 (149cc) engine. It serves the fuel-air mixing and delivery function for mowers in the 6.5-6.75 hp range.

Fitment & Compatibility

Before buying, verify your engine model is Kohler XT675-2070 (149cc) or XT650. This carburetor fits Toro models 20371, 20377, 20378, and 20171. Check your mower’s deck size—these Toro models typically use 21″ or 22″ decks, but deck size alone doesn’t guarantee carburetor fit. Also confirm your current carburetor’s part number (likely 14 853 68-S or 1485368S). The kit includes a fuel filter (14 083 15-S), but measure your fuel line inner diameter (commonly 1/4″) to ensure the included filter fits your existing hose.

Key Things to Know

• Aftermarket quality varies – While rated 4.5/5, some users report needing to adjust the float height or clean out manufacturing debris before installation. Inspect the gasket surfaces for flatness.
• Installation is moderate – You’ll need basic hand tools (socket set, screwdrivers) and patience with the throttle/governor linkage. Take photos before disassembly.
• Common gotcha – The included air filter may not perfectly match every Toro air box. Compare with your old one; reuse your original if needed.
• Tuning required – Expect to adjust the idle mixture screw (typically 1.5 turns out as baseline) after installation for smooth operation.

Should You Buy It

Buy this if your Toro mower has a Kohler XT675-2070 engine with a failed carburetor and you want a cost-effective replacement under $20. It’s a solid choice for DIY homeowners comfortable with basic small-engine repair. Avoid if you need a guaranteed OEM fit for commercial use or if your engine model isn’t listed—measure twice, buy once.