Toyan Engine FS-V400A, Инструкция пользователя

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3.Initial needle setting
：
The prerequisites here are ample lubrication and cooling. Such a condition is achieved by
having the engine operate on an extremely rich needle-valve setting: the excess oil not only
provides an abundance of lubrication; it also conducts away heat from the surrounding metal
and this is further assisted by the partial evaporation of the alcohol content of the fuel. it is a
four-stroke engine with inlet pipe and carburetor mounted high on the cylinder-head, means
that each charge of rich, cooling, fuel-air mixture is admitted directly into the cylinder, instead
of being pre-heated in a lengthy journey via the crankcase , as in the usual two-stroke model
car unit.
With the help of fan cooling, it can provide excellent operation experience for every enthusiast.
You can also purchase TOYAN series of water-cooled heat dissipation accessories, so that your
engine will be able to maintain long-term stable work.
Reminder!
When leaving the factory, each engine has completed the needle setting. If you have adjusted the