This is the O.S. Check Valve for the FS200S-FI and 91HZ Engines.
This valve pressurizes the fuel tank with the primary pressure
generated in the crank chamber while preventing the return of fuel.
FEATURES: Replaces damaged or worn check valves
One way flow design provides accurate tank pressure for fuel delivery
Designed for glow fuel application only
INCLUDES: One O.S. Max Check Valve
REQUIRES: Running silicone fuel tubing from pressure nipple at fuel tank cap to
check valve, and then to engine