Suzuki outboard motors 1988 2003 repair manual., Page 209Get this manual
OIL INJECTION 6-17 05006G19
05006P05
Fig32 Connect hand vacuum pump to the sensor and check the sensor for continuity
Fig33 Continuity should exist when vacuum is applied and should not exist when vacuum is released
Fig34 The oil flow sensor is located near the bottom of the oil tank, inline with the oil feed hose