The part number and recommended minimum altitude for the application of the high altitude carburetor
main jet are listed in the table below.
MODEL MAIN JET PART NUMBER ALTITUDE
F2.6
Standard Main Jet H100-S
2000 Feet (609.6 Meters)
Altitude Main Jet H100×1.08
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.