Product information "Carburetor (40mm) for CF-Moto, Xinyang & Polaris"
Maximum Performance for 500cc to 800cc! – PD40J Carburetor (40mm) for CF-Moto, Xinyang & Polaris
High-precision fuel system – Top-tier throttle response for demanding ATVs
Optimize your vehicle's power! The PD40J carburetor with a 40 mm inner diameter is a proven high-performance component for large-displacement single-cylinder and V-Twin engines. It is the ideal choice for the CF-Moto 600/800 series, the Xinyang XY500ATV, and the legendary Polaris Sportsman (model years 2001–2013). Engineered for precision, this carburetor ensures stable idling, smooth acceleration, and optimal fuel combustion, even under extreme working or off-road conditions.
Visual Compatibility: Before installation, perform a visual check. Specifically compare the inner diameter (40 mm) and the connections for the throttle cable and electric choke (if applicable) with your original part.
Clean Fuel System: Flush the fuel tank and install a new fuel filter before fitting the new carburetor. Residue in the old system can immediately clog the fine jets of the new unit.
Inspect Intake: Check the intake manifold for cracks. Since this carburetor has a 40 mm bore, the manifold must be perfectly sealed to prevent "lean running" caused by air leaks, which can damage the engine.
Adjustment: The carburetor comes factory pre-set. However, fine-tuning the air-fuel mixture screw and idle speed should be done once the engine is at operating temperature to suit your local altitude.
Maintenance: Only use fresh, high-quality fuel. For long periods of inactivity (e.g., winter storage), drain the fuel from the float bowl
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