Operation
33
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.
EMU27083
Procedure for 4-stroke models
Your new engine requires a period of ten-
hours break-in to allow mating surfaces of
moving parts to wear in evenly. Correct
break-in will help ensure proper performance
and longer engine life.
NOTE:
Failure to follow the break-in procedure
could result in reduced engine life or even
severe engine damage. Run the engine in
the water, under load (in gear with a propel-
ler installed) as follows. For ten hours for
breaking in engine avoid extended 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 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.
EMU27104
Pre-operation checks
WARNING
EWM00081
If any item in the pre-operation check is
not working properly, have it inspected
and repaired before operating the out-
board motor. Otherwise an accident
could occur.
CAUTION:
ECM00120
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU27111
Fuel
●
Check to be sure you have plenty of fuel
for your trip.
●
Make sure there are no fuel leaks or gaso-
line fumes.
●
Check fuel line connections to be sure they
are tight (if equipped Yamaha fuel tank or
boat tank).
●
Be sure the fuel tank is positioned on a se-
cure, flat surface, and that the fuel line is
not twisted or flattened, or likely to contact
sharp objects (if equipped Yamaha fuel
tank or boat tank).
EMU31710
Controls
●
Check throttle, shift, and steering for prop-
er operation before starting the engine.
●
The controls should work smoothly, with-
out binding or unusual free play.
●
Look for loose or damaged connections.
EMU31721
Stop switches
●
Confirm that turning the main switch to the
“” (off) position stops the engine.
●
Confirm that removing the clip from the en-
gine shut-off switch stops the engine.
✩✮✴✬✤✥✤✲✣ ✦✦
©2019 Yamaha Motor Corporation, U.S.A.
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