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SETTING
EC718010
Jet needle groove position adjustment
Should the engine be hard to run smoothly at
intermediate speeds, the jet needle 1 must be
adjusted. If the mixture is too rich or too lean at
intermediate speed operation, irregular engine
operation and poor acceleration will result.
Whether or not the richness of the mixture is
proper is hard to be determined by means of the
spark plug and therefore, it should be judged
from your feeling of actual engine operation.
Standard clip position
1. Too rich at intermediate speeds
Rough engine operation is felt and the
engine will not pick up speed smoothly. In
this case, step up the jet needle clip by one
groove or 0.5 groove and move down the
needle to lean out the mixture.
2. Too lean at intermediate speeds
The engine breathes hard and will not pick
up speed quickly. In this case, step down the
jet needle clip by one groove or 0.5 groove
and move up the needle to enrich the mix-
ture.
7-5
TUN
No.3 groove
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