Honda HRX537C Owner's Manual page 26

5. OPERATION
Flooded Engine
If the engine still refuses to start after several pulls on the starter, the engine
may be flooded.
To clear a flooded engine:.
1. HXE: Place the throttle lever [1] in the
STOP position [2].
HME: Turn the key to the OFF
position (see page 29).
2. Remove and dry the spark plug.
When installing the spark plug, screw
it in finger tight and correctly seated.
Using the correct size plug wrench,
tighten it an additional 1/8 to 1/4 turn
so that the washer is correctly
compressed.
3. HME: Turn the key to the ON
position.
HXE, HME: Put the throttle lever [1]
in the fast position [4] and repeat step
3 previously mentioned under STARTING THE ENGINE.
High Altitude Operation
At high altitude, the standard carburetor air-fuel mixture will be too rich.
Performance will decrease, and fuel consumption will increase. A very rich
mixture will also foul the spark plug and cause hard starting.
High altitude performance can be improved by specific modifications to the
carburetor. If you always operate your mower at altitudes above 1,800 meters,
have a Honda dealer perform this carburetor modification.
Even with carburetor modification, engine power will decrease about 3.5% for
each 300 meter increase in altitude. The effect of altitude on power will be
greater than this if no carburetor modification is made.
NOTICE
When the carburetor has been modified for high altitude operation, the air-fuel
mixture will be too lean for low altitude use. Operation at altitudes below 1,800
meters with a modified carburetor may cause the engine to overheat and
result in serious engine damage. For use at low altitudes, have your
authorized Honda dealer return the carburetor to original factory
specifications.
26
[1]
STOP
[2]
[3]
[4]
[5]
E