Breaking in (running in) engine – Yamaha F100A User Manual

Page 46

Advertising
background image

E

3-7

EMU00224

BREAKING IN (RUNNING IN)

ENGINE

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.

c

C

Failure to follow the break-in (running-in)
procedure may result in reduced engine
life or even severe engine damage.

EMU00233

Run the engine under load (in gear with a
propeller installed) as follows.
1)

For the first hour of operation:
Run the engine at 2,000 r/min or at
approximately half throttle.

2)

For the second hour of operation:
Run the engine at 3,000 r/min or at
approximately three-quarter throttle,
and during this period run it at full
throttle for approximately one minute
every ten minutes.

3)

For the next eight hours of operation:
Avoid continuous operation at full
throttle for more than five minutes at
a time.

4)

After these first 10 hours:
Operate the engine normally.

Break-in (running-in) time: 10 hours

67F-9-15-3 4/26/01 1:35 PM Page 8

Advertising
This manual is related to the following products: