Yamaha 55B Owner's Manual page 22

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NOTE:
At full throttle and under a maximum
boat load, the engine's rpm should be
within the upper half of the full throttle
operating range, as listed in "SPECIFICA-
TIONS" on page 4-1. Select a propeller
which fulfills this requirement.
If operating under conditions which allow
the engine's rpm to rise above the maxi-
mum recommended range (such as light
boat loads), reduce the throttle setting to
maintain the rpm in the proper operating
range.
1 Propeller diameter (in inches)
2 Propeller pitch (in inches)
3 Type of propeller (propeller mark)
Refer to the section "CHECKING PRO-
PELLER" for instructions on propeller
removal and installation.
EMU01208
START-IN-GEAR PROTECTION
Yamaha outboard motors which have the
pictured label 1 affixed to them or Yama-
ha approved remote control units are
equipped with start-in-gear protection
device(s). This feature permits the engine
to be started only when it is Neutral.
Always select Neutral before starting the
engine.
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