Optimax 115 Flushing Connection Thread

[Bhives]

Does anyone know what type of thread is cut on the 2006 Optimax 115 flushing connection. I have tried all sorts of connections BSP, Metric, NPT and can't seem to get one to match. I need a female thread adapter to connect a hose preferably with a Hoselock adapter.

Mariner / Mercury part number for this adapter is 22-857175

I know I could force an NPT thread on but it will wash out sooner or later.

[Limey Linda]

A standard hose filling fits my Merc.

[Jeff]

I think this is what you are looking for - you screw in the nipple in place of the blanking plug and can leave it fitted all the time as it has a nrv.
A standard hoselock connector fits.
I have two "spares" as I duplicated a line on an order to West marine a while ago !
PM me if you want one sending (at cost) plus postage
Jeff

[Rodan]

Mine too - standard hose fits nicely, no need for fittings...

[mark-f]

Is this blanking plug standard on older optimax's as I have a 2005 115 and cant remember seeing one?

Mark

[Jeff]

Maybe the 115 is different to the V6 range - on the V6 the telltale is in the centre rear of the bottom cowling and the blank is next to it. Having looked at a 115 photo it looks as if the telltale is on the starboard side corner of the cowl and I cannot see a plug ?
Jeff

[Bhives]

Thanks for the responses. As seen on the photo this engine does not have a blanked port. The flush system is connected via a hose which has a female end c/w non return valve which is kept tucked inside the cowl. The photo shows the male half fitted onto the flushing hose.