Volvo Penta D2-75 - Manual (Page 27)

25
Maneuvering
All shifting between ahead and astern must be done at engine idle
speed. Shifting at higher speeds may damage the drive or reverse
gear and will also be uncomfortable for those on board.
1. Reduce engine speed to idling and, if possible, let the boat lose
most of its speed.
2. Move the reverse gear control lever quickly and firmly into the
neutral position. Wait for a moment.
3. Move the gear control lever quickly and firmly into astern, then
increase the speed.
Operation
When sailing
When sailing the control lever should be in the neutral position if the
boat is equipped with HS25 reverse gear. If the boat is equipped with
S-drive or MS25 reverse gear the control lever should be the reverse
position if a folding propeller is used and in neutral position if a fixed
propeller is used.
Trolling operation valve
HS25 reverse gear can be equipped with a trolling operation valve
which makes it possible to steplessly reduce the boats lowest speed
by 20-80% at engine speeds up to 1200 rpm.
IMPORTANT! At engine speeds above 1200 rpm, the reversing
gear can overheat.
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