headline bars
headline bars
model no. 055-0216-8 | contact us 1 800 689-9928
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OPERA
TION
OPERATION AT HIGH ALTITUDE
The density of air at high altitudes is lower than at sea level. Engine power is reduced as
the air mass and air-fuel ratio decrease. Engine power and generator output will be reduced
approximately 3.5% for every 1000’ of elevation above sea level. At high altitudes increased
exhaust emissions can also result due to the increased enrichment of the air fuel ratio. Other high
altitude issues can include hard starting, increased fuel consumption and spark plug fouling.
To alleviate high altitude issues other than the natural power loss, a high altitude carburetor main
jet can be installed to replace the standard jet. The alternative main jet and installation instructions
can be obtained by contacting our Technical Support Team.
The part number and recommended minimum altitude for the application of the high altitude
carburetor main jet is listed in the following table.
In order to select the correct high altitude main jet it is necessary to identify the carburetor model.
For this purpose, a code is stamped on the side of the carburetor. Select the correct high altitude
jet part number corresponding to the carburetor code found on your particular carburetor.
Carb. Code
High Alt. Jet Part Number
Min. Altitude
P27-2-H
46.131017.20.01.H
5000’ (1524 m)
warnings
WARNING!
• Operation using the alternative main jet at elevations lower than the
recommended minimum altitude can damage the engine. For operation
at lower elevations, the originally supplied standard main jet must be
used. Operating the engine with the wrong engine configuration at a given
altitude may increase its emissions and decrease fuel efficiency
and performance.
FPO
