New Carburetor With Air Filter & Fuel Pump Compatible With Kawasaki FR691V FS691V Replace 15004-0829 15004-0985

What It Is

This is a complete carburetor assembly with integrated air filter and fuel pump, designed to replace the stock carb on Kawasaki FR691V and FS691V engines. It’s a direct drop-in for residential zero-turn mowers, lawn tractors, and commercial walk-behinds using those engines.

Fitment & Compatibility

• Engine models: Kawasaki FR691V (23hp) and FS691V (25hp). Check your engine’s model number on the valve cover or shroud—these are common on Gravely, John Deere, Kubota, and Exmark mowers around 48-72” decks.
• OEM part numbers: Replaces Kawasaki 15004-0829 and 15004-0985. If your current carb has a different number (e.g., 15004-0808), it may still fit, but confirm bolt pattern and gasket shape.
• Measurements before buying: Verify the mounting flange hole spacing (typically 60mm center-to-center) and the fuel inlet barb diameter (usually 5/16”). Measure your old carb’s height—this aftermarket unit may be slightly taller, potentially interfering with air cleaner housing on some chassis.
• Fuel pump compatibility: This includes a pulse-type fuel pump. Ensure your engine has a pulse port (a small barbed fitting on the crankcase or valve cover) – most FR/FS do, but older models may need a separate vacuum line.

Key Things to Know

• Quality concerns: 3.0/5 rating with 1 review suggests high risk of defects (leaks, rough idle, or poor gasket fit). Expect to re-use your old gaskets or add sealant. The air filter element is cheap foam—replace it with an OEM paper filter for better dust protection.
• Installation difficulty: Moderate. You’ll need to drain fuel, disconnect throttle/choke linkages, and swap fuel lines. The pulse line must be airtight—use a clamp. Expect 1-2 hours for a first-timer.
• Common gotchas: The included fuel pump may not match OEM flow rate, causing surging at full throttle. The float bowl screws are often soft metal (strip easily). Use a torque wrench at 4-5 ft-lbs max.
• Tuning required: After installation, you’ll likely need to adjust the idle mixture screw (usually 1.5-2 turns out) and idle speed. If it runs rich, the main jet may be oversized—compare to your old jet.

Should You Buy It

Buy this only if you’re on a tight budget and comfortable troubleshooting/tuning a cheap aftermarket carb. It’s a gamble—you might get a working unit, but expect to tweak gaskets, jets, and linkages. For a daily-use mower, spend $60-80 on a better-reviewed aftermarket or OEM carb to avoid downtime.