Yamaha XF375 Owner's Manual page 37

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First-time operation
EMU40512
Filling engine oil
The outboard motor is shipped from the factory without en-
gine oil. If your Yamaha dealer did not fill the engine with en-
gine oil, you must fill the engine before starting it. NOTICE:
Make sure that the engine is filled with engine oil before
operating the outboard motor for the first time. Other-
wise, the engine could be damaged severely.
The following tag, which is fitted on the outboard motor
when it is shipped from the factory, should be removed after
the engine is filled with engine oil for the first time. For more
information on checking the engine oil level, see page 34.
EMU30175
Breaking in engine
Your new engine requires a period of break-in to allow mat-
ing surfaces of moving parts to wear in evenly. Correct
break-in will help ensure proper performance and longer en-
gine life. NOTICE: Failure to follow the break-in proce-
dure could result in reduced engine life or even severe
engine damage.
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EMU41223
Procedure for breaking in engine
Your new engine requires a period of 10 hours break-in so
that mating surfaces of moving parts wear in evenly.
Operate the engine in the water under load (in gear with a
propeller installed) for 10 hours as follows. When breaking in
the engine, avoid extended idling, rough water, and crowded
areas.
1. For the 1st hour of operation:
Operate the engine at varying speeds up to 2000 r/min
or approximately 1/2 throttle.
2. For the 2nd hour of operation:
Increase the engine speed until the boat is on plane (but
avoid full-throttle operation), and then back off on the
throttle while keeping the boat at a planing speed.
3.
4.
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Getting to know your boat
All boats have unique handling characteristics. Operate cau-
tiously while you learn how your boat handles under different
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conditions and various trim angles (see page 45).
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EWM01922
If any item in "Checks before starting engine" is not
working properly, have it inspected and repaired before
operating the outboard motor. Otherwise, an accident
could occur.
ECM00121
NOTICE
Do not start the engine out of water. Overheating and se-
rious engine damage can occur.
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Fuel level
Be sure you have plenty of fuel for your trip. A good rule is to
use 1/3 of your fuel to get to the destination, 1/3 to return,
and to keep 1/3 as an emergency reserve. With the boat lev-
el on a trailer or in the water, turn the key to "
check the fuel level. For fuel filling instructions, see page 36.
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Removing top cowling
For the following checks in this chapter, remove the top
cowling.
ZMU01710
To remove the top cowling
1.
1. Cowling lock lever
For the remaining 8 hours of operation:
Operate the engine at any speed. However, avoid oper-
ating at full throttle for more than 5 minutes at a time.
After the 1st 10 hours of operation:
Operate the engine normally.
Checks before starting engine
WARNING
Pull the cowling lock levers outward, and then turn them
upward.
1
Operation
" (on) and
32