Checking Engine Speed - Vetus M Series Operation Manual

6 Maintenance
W
arning
The maximum engine speed adjust-
ment screw has been correctly set at
the factory and sealed. DO NOT at-
tempt to remove this seal.
At full load (with the boat cruising) the maxi-
mum engine speed should be approximately
as specified in the table.
If the engine does not reach this speed, it is
being overloaded!
If this is the case, check the ship's propeller for
defects or irregularities, and also to see that it
is the correct pitch and diameter.
86

69 Checking engine speed

• Allow the engine to warm up normally (un-
til the coolant temperature reaches at least
60°C (140°F).
• Check the engine RPM using a rev. counter,
or use the rev. counter fitted to the control
panel.
Checking engine speed
Speed (rpm)
Max.
M2.13 3000
M2.18 3600
M3.29 3600
M3.28 SOLAS
M4.35 3600
M415 SOLAS
M4.45 3200
M4.17 SOLAS
M4.56 3000
M4.55 SOLAS
Idle speed must be as specificated in the ta-
ble.
• Now check the speed and adjust if required.
Idle
850
850
900
840
840
900