Kohler RD 441, Service Manual, Page: 60 / 84

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Lubrication system
Oil pressure check
Connect a 10 bar pressure gauge to the oil filter fitting.
Start the engine and check pressure as a function of the oil tempera-
ture (see below).
Oil pressure curve at full rotation speed
The curve is obtained with engine running at 3600 r.p.m. at the N po-
wer; pressure is given in bar and temperature in centigrades.
The curve represents the minimum pressure value.
Oil pressure curve at idle rotation speed
The curve is obtained with engine running at a constant speed of
1200 r.p.m. in no-load conditions; pressure is given in bar and tempe-
rature in centigrades.
The curve represents the minimum pressure value.