Yamaha F25 - Manual (Page 24)

Operation
19
WARNING
EWM00650
Avoid using bolts, nuts or washers other
than those contained in the engine pack-
aging. If used, they must be of at least the
same quality of material and strength and
must be tightened securely. After tighten-
ing, test run the engine and check their
tightness.
EMU30173
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.
CAUTION:
ECM00800
Failure to follow the break-in procedure
could result in reduced engine life or even
severe engine damage.
EMU27081
Procedure for 4-stroke models
Run the engine under load (in gear with a pro-
peller installed) for 10 hours as follows.
1.
First hour:
Run the engine at 2000 r/min or at ap-
proximately half throttle.
2. Second hour:
Run the engine at 3000 r/min or at ap-
proximately three-quarter throttle.
3. Remaining eight 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.
EMU27102
Preoperation checks
WARNING
EWM00080
If any item in the preoperation check is not
working properly, have it inspected and
repaired before operating the outboard
motor. Otherwise an accident could occur.
CAUTION:
ECM00120
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU31500
Fuel
● Check to be sure you have plenty of fuel for
your trip.
● Make sure there are no fuel leaks or gaso-
line fumes.
EMU27130
Controls
● Check throttle, shift, and steering for proper
operation before starting the engine.
● The controls should work smoothly, without
binding or unusual free play.
● Look for loose or damaged connections.
● Check operation of the starter and stop
switches when the outboard motor is in the
water.
EMU27140
Engine
● Check the engine and engine mounting.
● Look for loose or damaged fasteners.
● Check the propeller for damage.
EMU30212
Checking the engine oil level
1. Put the outboard motor in an upright po-
sition (not tilted).
2. Check the oil level using the oil level
check window to be sure the level falls
between the upper and lower marks. Fill
U69M15E0.book Page 19 Wednesday, April 5, 2006 4:48 PM