General arrangement and planning
29
Engine inclination
To ensure that the engine is sufficiently lubricated and
cooled, it is important that the maximum engine incli-
nation is not exceeded. The engine inclination must
be checked.
Care should be taken to avoid having the front end
lower than the flywheel end, i.e. in excess of permit-
ted negative inclination, since this can affect lubrica-
tion of the engine and venting of the cooling system.
Each engine type has a maximum permitted engine
inclination while the boat is under way. This inclina-
tion includes both the installation inclination and the
trim angle that the boat makes in motion at various
speed through water.
A = The engine’s static inclination.
B = The boat’s trim angle under way.
C = Total inclination of engine under way, maximum
permissible inclination (A+B).
Max. engine inclination
Flywheel down Flywheel up
A
C
C
B
B
Max inclination measurements under way
Flywheel down Flywheel up
under way under way
Standard lubrication system 15° 5°
Lubrication system for V-drive 5° 11°