Yamaha F4, Owner'S Manual

Page: 60 / 174

3-8
GB
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.
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