MODEL
MAIN JET
PART NUMBER
ALTITUDE
F20/25
Standard Main Jet
H177-S
2000 Feet (609.6 Meters)
Altitude Main Jet
H177×1.08
Operating the engine with the wrong engine configuration at a given altitude may increase its
emissions and decrease fuel efficiency and performance. When the carburetor has been
modified for high altitude operation, the air-fuel mixture will be too lean for low altitude use.
Operation at altitudes below 609.6 meters (2,000 feet) with a modified carburetor may cause the
engine to overheat and result in serious engine damage. For use at low altitudes, have your
dealer return the carburetor to original factory specifications.
WARNING
