Operation
tends to occur, thus reducing the propulsion;
and if the propeller tips cut the air, the engine
ECM00800
CAUTION:
speed will rise abnormally and cause the en- Failure to follow the break-in procedure
gine to overheat. If the mounting height is too could result in reduced engine life or even
low, the water resistance will increase and severe engine damage.
thereby reduce engine efficiency. Mount the
outboard motor so that the anti-cavitation
EMU27081
Procedure for 4-stroke models
plate is in alignment with the bottom of the Run the engine under load (in gear with a pro-
boat.
peller installed) for 10 hours as follows.
1.
2.
3.
First hour:
Run the engine at 2000 r/min or at ap-
proximately half throttle.
Second hour:
Run the engine at 3000 r/min or at ap-
proximately three-quarter throttle.
Remaining eight hours:
Run the engine at any speed. However,
avoid operating at full throttle for more
than 5 minutes at a time.
ZMU01762
4.
After the first 10 hours:
Operate the engine normally.
NOTE:
q
The optimum mounting height of the out-
board motor is affected by the boat/motor
combination and the desired use. Test runs
at different heights can help determine the
EMU27103
Preoperation checks
EWM00080
WARNING
optimum mounting height. Consult your If any item in the preoperation check is not
Yamaha dealer or boat manufacturer for working properly, have it inspected and
further information on determining the prop- repaired before operating the outboard
er mounting height.
motor. Otherwise an accident could occur.
q
For instructions on setting the trim angle of
the outboard motor, see page 41.
ECM00120
CAUTION:
EMU30173
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
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.
EMU31550
Fuel
q
q
Check to be sure you have plenty of fuel for
your trip.
Make sure there are no fuel leaks or gaso-
line fumes.
33
| Categories | Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha F75, Yamaha F90 |
| Model Year | 2007 |
| Download File |
|
| Language | English |
| Product Brand | Yamaha Motor. Yamaha Motor Corporation, USA - Support Customer Relations for US: 1-800-962-7926
Yamaha Boats: 1-800-962-7926 Yamaha Outboard Customer Relations: 1-866-894-1626 , Yamaha Outboard |
| Document File Type | |
| Publisher | yamaha-motor.com |
| Wikipedia's Page | Yamaha Motor Company |
| Copyright | Attribution Non-commercial |
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