699831 28R707 Carburetor for 12.5hp 289707 28M707 286707 283707 28D707 28D702 289702 283702 284702 284707 284777 286702 Engine Lawnmover Carb Replace 694941

What It Is

This is an aftermarket carburetor designed for 12.5hp Briggs & Stratton single-cylinder engines (models 289707, 28M707, 286707, 283707, 28D707, 28D702, 289702, 283702, 284702, 284707, 284777, 286702). It replaces OEM part numbers 699831 and 694941, used in riding mowers, tractors, and zero-turns from brands like MTD, Cub Cadet, Husqvarna, and Craftsman.

Fitment & Compatibility

• Engine model: Confirm your engine’s model number (stamped on the blower housing or valve cover) matches one of the listed numbers (e.g., 289707, 28M707). This carb fits 12.5hp OHV engines only.
• OEM cross-reference: Direct replacement for OEM 699831 and 694941. Check your old carb’s part number before buying.
• Physical check: Measure mounting bolt spacing (typically 2.5 inches center-to-center) and fuel inlet size (usually 1/4-inch barb). Verify gasket shape matches your intake.
• Brand fit: Fits most Briggs-powered riders, but aftermarket fit may vary slightly on older decks. Not for walk-behind mowers or engines under 10hp.

Key Things to Know

• Quality: Aftermarket carb is functional but may need adjustment. Some units arrive with loose screws or debris in jets—inspect before install.
• Installation difficulty: Moderate. Requires removing old carb, swapping gaskets, and adjusting idle mixture screw (typically 1.5 turns out from closed). Have a 3/8-inch wrench and carb cleaner ready.
• Common gotcha: The included gasket might be thinner than OEM—use a small bead of RTV on the intake side to prevent air leaks. Also, the fuel line may be a hair too short; reuse your original hose if possible.
• Tuning: Expect to tweak the idle screw after install. Rich or lean running is common until adjusted. No choke linkage issues reported on most models.

Should You Buy It

Buy this if you have a 12.5hp Briggs engine with a failing OEM carb and want a budget fix that works. It’s not a perfect OEM match, but for $25 and decent reviews, it’s a solid choice for DIY repairs on older riders. Skip if you need exact factory performance or have a newer engine with complex emissions controls.