Operation; First-Time Operation; Fill Engine Oil; Breaking In Engine - Yamaha VF90 Manuel De L'utilisateur

EMU36382

First-time operation

EMU36393

Fill engine oil

The engine is shipped from the factory with-
out engine oil. If your dealer did not fill the oil,
you must fill it before starting the engine.
NOTICE: Check that the engine is filled
with oil before first-time operation to avoid
severe engine damage.
The engine is shipped with the following tag,
which should be removed after engine oil is
filled for the first time. For more information
on checking the engine oil level, see page 47.
EMU30175

Breaking in engine

Your new engine requires a period of break-
in to allow mating surfaces of moving parts to
wear in evenly. Correct break-in will help en-
sure proper performance and longer engine
life. NOTICE: Failure to follow the break-in
procedure could result in reduced engine
life or even severe engine damage.
[ECM01782]
ZMU01710
[ECM00802]
EMU27086
Procedure for 4-stroke models
Your new engine requires a period of 10
hours break-in to allow mating surfaces of
moving parts to wear in evenly.
TIP:
Run the engine in the water, under load (in
gear with a propeller installed) as follows. For
10 hours for breaking in engine avoid extend-
ed idling, rough water and crowded areas.
1. For the first hour of operation:
Run the engine at varying speeds up to
2000 r/min or approximately half throttle.
2. For the second hour of operation:
Increase engine speed as much as nec-
essary to put the boat on plane (but
avoid full-throttle operation), then back
off on the throttle while keeping the boat
at a planing speed.
3. Remaining 8 hours:
Run the engine at any speed. However,
avoid operating at full throttle for more
than 5 minutes at a time.
4. After the first 10 hours:
Operate the engine normally.
EMU36402

Getting to know your boat

All boats have unique handling characteris-
tics. Operate cautiously while you learn how
your boat handles under different conditions
and various trim angles (see page 56).
EMU36414

Checks before starting engine

EWM01922
WARNING
If any item in "Checks before starting en-
gine" is not working properly, have it in-
spected and repaired before operating the
outboard motor. Otherwise, an accident
could occur.

Operation

45