Engine Speed Adjustment; Adjust The Carburettor; Operation At High Altitudes - ENAR ZEN SERIE Manual De Instrucciones

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7.5 ENGINE SPEED ADJUSTMENT

The engine must work at full load at 3600±100 r.p.m.
7.5.1.
7.5.2.
7.5.3.

7.6 ADJUST THE CARBURETTOR

7.6.1.
7.6.2.
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OPERATION AT HIGH ALTITUDES:

At high altitudes, the mixture of air and fuel in the normal carburettor will be much too rich. The
machine's performance will diminish and its fuel consumption will rise.
Performance at higher altitudes can be improved by carrying out specific modifications on the
carburettor. If the motor always operates at altitudes of more than 1,500m above sea level, ask your
authorized Honda dealer to carry out these modifications on the carburettor.
Even in the case of an appropriate carburettor, the power of the engine will be reduced by
approximately 3.5% for every 300-metre increase in height. The effect of the altitude on the power of
the motor will be all the greater if the carburettor is not modified.
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Operation of the pump at an altitude that is lower than the one for which the carburettor has been
adjusted may lead to an inferior rate of performance, overheating, and serious damage to the motor
caused by the air and fuel mixture flowing too fast.
22
ZEN / ZEN-E
Use current standard procedures for managing the residual oil.
:
PRECAUTION
Place the engine on a mattress
Start the engine up and let it heat up for a few minutes.
Tighten the acceleration stop inwards to increase the speed and slacken it to reduce the
speed it reaches. Check that the accelerator makes contact with the stop when you are
going to measure the r.p.m.
Start the engine up and wait until it reaches the working temperature.
Keep the engine idling and turn the accelerator stop screws until the standard idling
speed is reached: 1400
ATTENTION:
 200
r.p.m.
 150
ACCELERATOR
STOP SCREW
VIBRATING PLATES