Does anyone know the inner diameter of the raw water inlet hose to the water pump assembly? Looking to start up the engine while on the hard and there are contradictory measurements on the internet. I'm seeing both 5/8" and 3/4" inner diameters.
Yes, I can certainly measure. However, it's a 30 minute drive to the boat so I'm hoping to figure this out before I head over there next time. Thanks!It's possible either could have been used(?) You may have to measure yours.
Good point. That's why I was going to use an in-out bucket rather than muffs (or cups). Seems like the engine would only draw water when on this way, thus avoiding any potential for hydrolocking. Unless I'm missing something?I'm not sure of the size of the surface area for the water intake, but could you use an outboard motor flusher, ie. cups? Either way, be careful about letting the water flow too much without the engine running as the water may work its way backwards through the exhaust and hydrolock the engine.
It's a Yanmar 2y15m.That’s what I do, use a 5 gallon bucket.
What engine?
My M25XP uses 1/2” if I recall correctly. Maybe 5/8” but definitely not 3/4”.
I’ll check my notes later today to confirm.
Thanks for chiming in Stu. Trust me, I won't be hooking the supply hose directly to the inlet. I have no interested in hydrolocking the engine. I've seen that video - it's excellent. Cheers.Winterizing an Engine on the Hard (Thanks to Maine Sail) - NEVER connect a hose to your raw water pump inlet - NEVER!!!
Plus:
So buy both and bring 'em with you. What would you be out, $10?
My M25 uses 5/8" for raw water. 7/8" is between the manifold and the freshwater side, not the raw water.
Do you not have an engine manual for your boat? Is one here on this site?
Good luck.