Operator`s manual

4-21
E
EJU00573a
CARBURETOR ADJUSTMENT
The carburetor is a vital part of the engine
and requires very sophisticated adjustment.
Most adjusting should be left to a Yamaha
water vehicle dealer who has the profes-
sional knowledge and experience to do so.
However, the following point may be ser-
viced by the owner as part of his usual main-
tenance routine.
ECJ00085
CAUTION
:
The carburetor was set at the Yamaha
factory after many tests. If the settings
are disturbed without having technical
knowledge, poor engine performance
and damage may result.
EJU00577a
Trolling speed
Place the vehicle afloat. Start the engine
and warm it up for one or two minutes. Using
a diagnostic tachometer or, if necessary, the
tachometer in the multifunction meter, adjust
the engine speed to specification. Turn the
throttle stop screw 1 clockwise to increase
engine speed or counterclockwise to
decrease engine speed.
Trolling speed: 1,300~1,400 r/min