90-826148R2 MARCH 1997 FUEL SYSTEM - 3B-11
Rejetting Carburetors For High Alti-
tude Operation
The carburetor jet installed at the manufacturer is for
engine operation at sea level through an elevation of
2500 feet (762m) above sea level. If the engine is to
be operated at an altitude higher than 2500 feet
above sea level, it will be necessary to rejet (remove
the carburetor jets and install jets with a different ori-
fice size) the carburetors. Each time the engine is to
be operated at a different elevation from the previous
time, refer to the “Carburetor Jet Charts” following,
and rejet the carburetors for elevation engine will be
operated at.
High Altitude Jet Chart
Engine Operation
Elevation
(Above Sea Level)
High Speed
Jet Size
2500’ - 5000’
(750 - 1500m)
.002” smaller
(than standard jet)
5000’ - 7500’
(1500 - 2250m)
.004” smaller
(than standard jet)
7500’ and Up
(2250m and Up)
.006” smaller
(than standard jet)
*Standard Jets listed are for operation of engine from 0 ft-2500
ft. (0-762 M) of elevation.
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