4-13
BLEEDING THE OIL INJECTION
PUMP
➀
Air bleeding screw
To bleed the oil injection pump, loosen
the air bleeding screw on the bleed
hose. Oil will flow into the oil injection
pump. Hold a rag under the screw hole
to catch oil as it spills out. Keep letting
oil run out until there are no bubbles in
the oil. Tighten the screw firmly and
wipe up any spilled oil completely.
Properly dispose of oil soaked rags.
CARBURETOR ADJUSTMENT
The carburetors are vital parts of the
engine and require very sophisticated
adjustment. Most adjusting should be
left to a Yamaha Sport Boat dealer who
has the professional knowledge and
experience to do so. However, the fol-
lowing point may be serviced by the
owner as part of his usual maintenance
routine.
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.
1
Throttle stop screw
Trolling Speed ( Idle)
NOTE: A diagnostic tachometer is use-
ful for this procedure.
Place the Sport Boat afloat. Start the
engine and warm it up for one or two
minutes.
Using a diagnostic tachometer, adjust
one engine’s speed to specification.
Turn the throttle stop screw clockwise
to increase engine speed or counter-
clockwise to decrease engine speed.
Repeat the procedure on the other
engine.
CAUTION:
Trolling speed: 1,200~1,300
1
1
M
AINTENANCE
& C
ARE
4
Содержание LS2000
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