teach me

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I would like to descrive about engine breakin.

But I don't know what called needle and operation in US.

In japan needles are called upper,lower,middle,idle.

And needl operation called open or close.

Could you teach me about these.

Comments

Unknown said…
General needle terms are -
Upper - high speed
Lower - low speed or low end
Middle - middle range or mixture control
Idle - Idle stop, idle screw

Adjustment terms are -
Open - richen
Close - lean
22/10/15 22:07
Nimbus said…
Hello Leo!
Thank you so much.
23/10/15 01:39

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