Operation; First-Time Operation; Breaking In Engine; Getting To Know Your Boat - Yamaha VZ175 Owner's Manual

EMU36381

First-time operation

EMU27042

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.
ECM00750
NOTICE
Failure to follow the break-in procedure

could result in reduced engine life or
even severe engine damage.
Do not use premixed fuel in this engine

because it could cause carbon deposits
on the fuel injector and engine trouble.
Follow the instructions for break-in

carefully.
EMU27092
Procedure for HPDI models
Run the engine under load (in gear with a
propeller installed) for 10 hours as follows.
1. First 10 minutes:
Run the engine at the lowest possible
speed. A fast idle in neutral is best.
2. Next 50 minutes:
Do not exceed half throttle (approxi-
mately 3000 r/min). Vary engine speed
occasionally. If you have an easy-plan-
ing boat, accelerate at full throttle onto
plane, then immediately reduce the
throttle to 3000 r/min or less.
3. Next 2 hours:
Accelerate at full throttle onto plane,
then reduce engine speed to three-quar-
ter throttle (approximately 4000 r/min).
Vary engine speed occasionally. Run at
full throttle for 1 minute, then allow about
10 minutes of operation at three-quarter
throttle or less to let the engine cool.
4. Remaining 7 hours:
Run the engine at any speed. However,
avoid operating at full throttle for more
than 5 minutes at a time.
5. After the first 10 hours:
Operate the engine normally.
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Getting to know your boat

Different boats handle differently. Operate
cautiously while you learn how your boat
handles under different conditions and with
different trim angles (see page 55).
EMU36413

Checks before starting engine

EWM01921
WARNING
If any item in "Checks before starting en-
gine" is not working properly, have it in-
spected and repaired before operating
the outboard motor. Otherwise, an acci-
dent could occur.
ECM00120
NOTICE
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU37151

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
" " (on) and check the fuel level. For fuel
filling instructions, see page 48.
EMU36432

Remove cowling

For the following checks, remove the top
cowling from the engine. To remove the en-
gine cowling, release all the lock levers and
lift off the cowling.

Operation

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