Clutch Actuating Pressure
A clutch that will not engage can be caused by either a loss in clutch hydraulic pressure (oil pump outlet) or by a defective clutch. The clutch hydraulic actuating pressure should be tested first.
CLUTCH ACTUATING PRESSURE TEST (Typical Example)
With the engine operating at full load RPM the gauge should indicate 55 - 70 PSI (3,9 - 4,9 kg/cm2) with the selector lever in NEUTRAL position.
With the control lever moved to engage either the ahead or astern clutch, a 245 ± 10 PSI (17,2 ± 0,7 kg/cm2) reading should be indicated on the gauge.