Yamaha WaveRunner SuperJet 2009 Owner's/Operator's Manual page 64

Maintenance and care
(3) While using a diagnostic tachometer, turn
the throttle stop screw to adjust the en-
gine speed to specification. Turn the
throttle stop screw clockwise to increase
the engine speed or counterclockwise to
decrease the engine speed.
1 Throttle stop screw
Trolling speed:
1300 ±50 r/min
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