GOLD 95/115/130 OWNER’S MANUAL VER 10
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Copyright by
FLY
Products
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Page
16
Now carefully open the screw counter clockwise
1
turn (turning the screw out in the counter clockwise
direction enrich the mix/fuel to air ratio). This is the standard factory setting for
L
.
With the
H
(meaning High rpm) screw follow the same procedure and turn it clockwise until full closed.
Now paying close-attention, open the
H
screw
1
turn to arrive at the standard factory setting.
Keep in mind that these setting are extremely sensitive and the total sum of all adjustment you make
to the screw should not exceed ¼ of a turn. Increments of 1/10
th
of a turn are already sufficient to
change engine performance.
In particular be careful not to run your machine at the “too poor” of a fuel to air-mixture, as this can
result in possible overheating and engine damage due to lack of cylinder lubrification.
Pay much attention to the carburator setting at the maximum since if this mixture is too poor, it can
result in engine damage. No damage is done if the setting is too rich. Therefore, when in doubt, it is
better to have carburation, at the maximum rpm, somewhat more on the rich side.
A verification of carburation can be done after the engine has run 20-30 minutes checking of the
colour of the spark plug electrode. If the electrode is brown the carburation is correct. If is grey, its
poor and if its is black its rich.
Attention: If the carburation should happen to be difficult to adjust by listening to engine runs, this
means that the fuel tube is absorbing air from the pump (in this case is better to change it) or else
from the connections between the tank and the carburator. The air bubbles are easily seen, while the
engine is running they are seen passing through the tube.
THE WB 37 IS EQUIPED WITH 3 SETING
SCREWS:
1 H for high. Controls the mixture at full load
2 L for low. Controls the mixture in the lower and
medium speed range
3 Controls the idle
