8
100220
ENGLISH
OPERATION
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 3
½
% for every 1000 feet 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, Champion Power Equipment can provide a
high altitude carburetor main jet. The alternative main
jet and installation instructions can be obtained by
contacting Customer Support. Installation instructions
are also available in the Technical Bulletin area of the
Champion Power Equipment internet site.
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 main jet part number
corresponding to the carburetor code found on your
particular carburetor.
Operation using the alternative main jet at
elevations lower than the recommended minimum
altitude can damage the engine. For operation at
lower elevations, the 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.
WARNING
Carburetor
Code
Main Jet
Part Number
Altitude
P19-1-Z
Standard
26.131017.00.Z
3500 Feet
(1067 Meters)
Altitude
26.131017.00.01.Z
P19-1-H
Standard
26.131017.00.H
Altitude
26.131017.00.01.H
P19-1-Y
Standard
26.131017.00.Y
Altitude
26.131017.00.01.Y
Starting the Engine
1. Make certain the engine is on a flat, level surface.
2. Flip engine switch to “ON” position (Item A).
3. Rotate the fuel valve to the “ON” position (Item B).
4. Move the throttle lever (Item C) to the “Fast”
position.
5. Move the choke lever (Item D) to the “Choke”
position.
6. Pull the starter cord slowly until resistance is felt and
then pull rapidly.
SEE NOTE BELOW.
7. As engine warms up, move the choke lever (Item D)
to “Run.”
A
B
C
D
Keep choke lever in “Choke” position for 2 pulls of
the recoil starter. After first pull, move choke lever
to the “Run” position for up to the next 3 pulls of
the recoil starter. Too much choke leads to spark
plug fouling/engine flooding due to the lack of
incoming air. This will cause the engine not to start.
NOTE
Stopping the Engine
1. Turn the fuel knob to the “Off” position. (B)
2. Let the engine run until fuel starvation has stopped
the engine. This usually takes a few minutes.
3. Turn the engine switch to the “Off” position. (A)
Important:
Always ensure that the Fuel Valve and the
Engine Switch are in the “OFF” position when the
engine is not in use.
If the engine will not be used for a period of two (2)
weeks or longer, please see the Storage section for
proper engine and fuel storage.
NOTE
If the engine starts but does not run make certain
that the engine is on a flat, level surface. The
engine is equipped with a low oil sensor that will
prevent the engine from running when the oil level
falls below a critical threshold.
NOTE
