Warming Up Engine; Procedure For Warming Up Engine; Checks After Engine Warm Up; Shifting - Yamaha VF150 Manuel De L'utilisateur

ECM02251
NOTICE
If water is not flowing out of the cooling
water pilot hole at all times while the en-
gine is running, overheating and serious
damage could occur. Stop the engine and
check whether the cooling water inlet on
the lower case or the cooling water pilot
hole is blocked. Consult your Yamaha
dealer if the problem cannot be located
and corrected.
1
1. Cooling water pilot hole
EMU27671

Warming up engine

EMU41234

Procedure for warming up engine

1. After starting the engine, warm up the
engine until the engine speed stabilizes
at idle speed to provide maximum oper-
ating performance and acceleration.
NOTICE: Failure to do so will shorten
engine life.
[ECM04550]
Idle speed (in neutral):
650–750 r/min
2. Check that the low oil pressure-alert indi-
cator remains off. NOTICE: If the low oil
pressure-alert indicator blinks after
the engine starts, stop the engine.
Otherwise, serious engine damage
could occur. Consult your Yamaha
dealer.
EMU36532

Checks after engine warm up

EMU36542

Shifting

While the boat is tightly moored, and without
applying throttle, confirm that the engine
shifts smoothly into forward and reverse, and
back to neutral.
EMU40461

Stop switches

Perform the following procedure to check
that the main switch and engine shut-off
switch operate properly.
 Check that the engine stops when the main
switch is turned to the "
 Check that the engine stops when the clip
is pulled from the engine shut-off switch.
 Check that the engine cannot be started
with the clip removed from the engine shut-
ZMU07766
off switch.
EMU31734
EWM00181
WARNING
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
ECM01611
NOTICE
Warm up the engine before shifting into
gear. Until the engine is warm, the idle
speed may be higher than normal. High
idle speed can prevent you from shifting
back to neutral. If this occurs, stop the en-
gine, shift to neutral, then restart the en-
gine and allow it to warm up.
To shift out of neutral
1. Pull the neutral interlock trigger up (if
equipped).
Operation
[ECM02381]
" (off) position.
Shifting
59