Yardworks 060-1300-6, Instruction Manual

Page: 34 / 86

model no.
060-1300-6
| contact us: 1.866.523.5218
34
O
Pe
RA
TION
OPeRATION AT HIGH AlTITUDe
The density of air at high altitude is lower than at sea level. Engine power is reduced
as the air mass and air-fuel ratio decrease. Engine power and output will be reduced
approximately 3½% for every 1000’ (305 m) of elevation above sea level. This is a natural
trend and cannot be changed by adjusting the engine. 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 and installation instructions can be obtained by contacting Yardworks
Canada 1.866.523.5218.
The part number and recommended minimum altitude for the application of the high
altitude carburetor main jet is listed in the table below.
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 Altitude Jet Part Number Minimum Altitude
16100-Z142910-
01A0 16161-Z151010-0000 3000’ (914 m)
16161-Z151310-0000 6000’ (1829 m)
 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.