Operating At High Altitude; Shutting Down; Exhaust Control System - DUROMAX XP7HPE Owner's Manual

crankcase is too low, the engine oil alarm will stall the engine automatically to make it free of
damage while the engine switch is still at "ON".
CAUTION:
If cannot restart the engine, check the engine oil level first before go to other check items.
BREAKER (Electric-start type)
The breaker will cut off automatically to protect the charging circuit of the battery in the case that
short circuit or incorrect connection of the battery poles occurs.
The green indicator in the breaker will jump out with the circuit cutting off. After finding troubles and
troubleshooting, depress the breaker button to tune the breaker on.
OPERATING ON HIGHLANDS
On highlands, the standard mixture ratio is relatively too big so the engine performance may be
impaired while the fuel consumption may increase, besides, too big mixture ratio will pollute the
spark plug to result in starting the engine difficultly. This problem can be solved by amending the
carburetor technological status. If always using on highlands with a height above sea level of 1800
meters, ask your dealer for doing the job.
CAUTION:
Amended engine applicable to highlands may be damaged seriously in area below altitude of 1800
meters for overheating, because its mixture ratio is too small for operation in low altitude area. In
the case, ask your dealer to recover the engine to its normal technical status.
STOP
In emergency, push the engine switch to "OFF" to stall the
engine; to stop it in normal, do as follows:
1. Push right the throttle lever to the bottom.
2. Push the engine switch to "OFF".
3. Set the fuel cock to "OFF".
CAUTION:
Sudden stopping at high speed under heavy load is
forbidden, otherwise damage will result.

EXHAUST CONTROL SYSTEM

With the engine running, carbon monoxide, oxide of nitrogen and hydrocarbon will produce, and in
certain conditions, oxide of nitrogen and hydrocarbon will react chemically each other to make
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