High Altitude Operation - Honda WJR4025 Manual Del Propietário

Hot Restart
If the engine is operated at higher ambient temperatures then turned off and
allowed to sit for a short time, it may not restart on the first pull.
If necessary, use for following procedure:
IMPORTANT SAFETY PRECAUTION
Turn the engine switch to the OFF position before performing the following
procedure. This will prevent the engine from starting and running at maximum
speed when the throttle is in the full throttle position. If the engine starts, with
the throttle in the full throttle position, agricultural chemicals may splash on
you if the shut-off valve is in the "OPEN" position. This may result in personal
injury.
1. Turn the engine switch to the OFF position.
2. Move the choke lever to the OPEN position.
3. Move the throttle lever in the full throttle position (FAST).
4. Pull the starter grip 3 to 5 times.
5. Follow the STARTING THE ENGINE procedure on page 37 and start the engine
with the choke lever in the OPEN position.

• High altitude operation

At high altitude, the standard carburetor air-fuel mixture will be excessively rich.
Performance will decrease, and fuel consumption will increase.
High altitude performance can be improved by specific modifications to the
carburetor. If you always operate the backpack sprayer at altitudes higher than
610 m above sea level, have your authorized Honda dealer perform these
carburetor modifications.
Even with suitable carburetor jetting, engine horsepower will decrease
approximately 3.5% for each 300 m increase in altitude. The effect of altitude on
horsepower will be greater than this if no carburetor modification is made.
CAUTION:
Operation of the backpack sprayer at an altitude lower than the carburetor
is jetted for may result in reduced performance, overheating, and serious
engine damage caused by an excessively lean air/fuel mixture.
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