Operation - Yamaha F350 Owner's Manual

Operation

EMU36382
First-time operation
EMU36393
Fill engine oil
The engine is shipped from the factory without 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.
[ECM01782]
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
42.
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.
[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 pro-
peller installed) as follows. For 10 hours for breaking in en-
gine 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 necessary to put
the boat on plane (but avoid full-throttle operation), then
back off on the throttle while keeping the boat at a plan-
ing speed.
3. Remaining 8 hours:
Run the engine at any speed. However, avoid operating
41
4.
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Getting to know your boat
All boats have unique handling characteristics. Operate
cautiously while you learn how your boat handles under dif-
ferent conditions and various trim angles (see page 56).
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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
Do not start the engine out of water. Overheating and
serious engine damage can occur.
EMU36422
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
level on a trailer or in the water, turn the key to "
check the fuel level. For fuel filling instructions, see page 44.
EMU40774
Removing top cowling
For the following checks, remove the top cowling from the
bottom cowling.
ZMU01710
To remove the top cowling, pull the cowling lock levers and
lift up the top cowling.
1. Cowling lock lever
2. Bottom cowling
3. Top cowling
at full throttle for more than 5 minutes at a time.
After the first 10 hours:
Operate the engine normally.
Checks before starting engine
3
2
1
" (on) and
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