Fuel system
Idling rpm
Have the setting of the idling rpm done by an official Hydrospace dealer. If the
idling rpm varies, have the throttle housing checked by an official Hydrospace
dealer.
Idling rpm
In Water: 1500 ⫾1750 min
-1
Use in high geographical location
No height adjustment is required. The E.C.U. (engine control unit) will regulate the
fuel mixture automatically.
Fuel ventilation - check valve
The fuel tank has a rubber ventilation pipe. Inside the ventilation pipe there is a small
plastic check valve which allows air into the tank. When rolling over, it will keep
any leakage from the S4 Standup to a minimum.
Have the check valve checked by an official Hydrospace dealer according to the
inspection table.
72 english
A. Check valve
B. Direction of flow
A
B
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