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Choke Lever; High Altitude Operation - MADER MQ170GS Manual De Instrucciones

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6. As the engine warms up. Gradually open the choke.

(1) CHOKE LEVER

(2) OPEN

High altitude operation

At high altitude the standard carburettor air-fuel mixture will be excessively rich.
Performance and fuel consumption will increase.
High altitude performance can be improved by installing a smaller diameter main fuel
jet in the carburettor and readjusting the pilot screw. If you always operate the tiller at
altitudes higher than 1.830m (6.000feet) above sea level ask your authorized Power
tillers dealer to perform these carburettor modifications.
Even with suitable carburettor jetting, engine horsepower will decrease approximately
3-5% for each 305m (1.000foot) increase in altitude.
The effect of altitude on the horsepower will be greater than this if no carburettor
modification is made.
CARTION:
Operation of the tiller at an altitude lower than the carburettor 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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