FNM HPE Series Owner's Manual page 55

The mechanical throttle can also be provided with a security system that does not allow starting the
engine with the gear engaged. The purpose of this is to avoid inadvertently starting the engine with
propeller spinning causing damage to people in the water.
The elements of the mechanical throttle are as follows:
a. Neutral lock button - Prevents accidental gear engagement.
b. Throttle only button - With the command entered the throttle enables only the accelerator
without engaging the gear.
c. Lanyard stop switch - Turns off the engine in case the conductor accidentally moves away
from the driver's seat.
d. Control handle - Allows controlling the engines engaging the gear and acting on the
accelerator.
e. Trim/Tilt - Activates the trim pump.
f. Trailer - Activates the trim pump and pulls the stern drive completely out of the water.
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2.5.2 Flexball electronic throttle
The electronic throttle works similarly as the mechanical throttle, allowing the command, depending on
the configuration, of one or two engines.
Moving the lever 16° forward or reverse from the neutral position, the system respectively engages the
forward or reverse gear. The accelerator has a stroke of 67° both in forwards or reverse gear.
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FNM HPE Series 51