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EMF51112
BREAKING IN (RUNNING IN)
Your new engine requires a period of
break-in (running-in) to allow mating sur-
faces of moving parts to wear-in evenly.
Correct break-in (running-in) will help
ensure proper performance and longer
engine life.
cC
8 Failure to follow the break-in (running-
in) procedure may result in reduced
engine life or even severe engine dam-
age.
8 Premix fuel must be used during break-
in (running-in) in addition to oil in
YAMAHA AUTOLUBE SYSTEM.
Break-in (running-in) time:10 hours
Break-in (running-in) premix ratio
Gasoline (Petrol) : Engine oil = 50 : 1
EMU00228
Run the engine under load (in gear with a
propeller installed) as follows.
1) First 10 minutes:
Run the engine at the lowest possi-
ble-speed. A fast idle in neutral is
best.
2) Next 50 minutes:
Do not exceed half throttle (approxi-
mately 3,000 r/min). Vary engine
speed occasionally. If you have an
easy-planing boat, accelerate at full
throttle onto plane, then immediately
reduce the throttle to 3,000 r/min or
less.
3-9
ENGINE
GB
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