5/7/20
8
2.
Please make power changes slowly, rapid power changes can put great stress on
engine
and drive components
. It is advisable after cruising for 4 hours or more at economical
speeds (1100 to 1500 RPM), to
run the engine at 2400 RPM for at least 5
min. prior to the
end of the cruise day.
This helps to clean out carbon deposits in the engine. At the end of
the run-up slowly and smoothly reduce power as you approach your destination and allow
at least 5 minutes for cool down before shutting down.
3.
According to Cummins Northwest, Inc data, at reasonable speeds the Nordic Tug 42 has
very economical fuel consumption.
RPM
SPEED (kts)
Gallons/hour
1200
8.05
2.31
1500
9.4
4.26
1800
10.2
5.82
2200
13.2
12.2
4.
Monitor the engine instruments at the helm station while cruising.
5.
Volts should read between 13 and 14 at normal cruising.
6.
Water temperature should be between 160 and 165 degrees.
7.
Oil pressure should range between 30 and 100 depending on RPMs.
8.
Vacuum gauges for the RACOR fuel filters should read below 7 while cruising.
Summary of Contents for Mariah
Page 30: ...5 7 20 30...
