View Full Version : Merc 250 Optimax M2 Impellar ???

Adam X20
04-15-10, 10:06 AM
Is there a Impellar for the cooling system on a M2 jet drive motor?

Is it easily Serviced?

04-15-10, 08:55 PM
if it's still like the old sportjets, it's the turbine's pressure that supply water to the engine. Actually, I think every jet-powered craft is cooled like that (except closed loop cooling ones)

04-18-10, 12:39 AM
ProbeGT is right on. It is the pressure built in the high pressure side of the pump that supplies all the water for cooling. The only maintenance required is to flush the engine with a garden hose occasionally (every use in salt water).