Cooling System Warning Alarm

[BaysideMarine]

Smelly, the u-shaped cowl that covers the powerhead mounting bolts has a seal that it sits on towards the bottom. You can see where it sits in pic3, it goes between the parallel ridges that are just above the painted area of the midsection.

That seal (like a large flat rubber ring) stops water coming up into the lower cowl. Ideally, if you can refit the seal around the lower cowl also it would be advisable but if you canot then perhaps leave it.

To get the lower cowl back into position just work it back and forth and side to side, after all, it dropped to that position in all your fiddling so it has to back to its original position also.

Of course, if you pull the powerhead off it will be easy to reset the lower cowl....... And it would have been a lot easier to have done the whole job....

Cheers

[Smelly]

HI all.

Got it done. Need to hod tounge right i Ithink..

Now, putting it all back together...hopefully in time ofr XMAS day (tomorrow) to start herup. That would be my XMAS present..

Next time I take the powerhead off. I have defintely chosen the hard way..

I have a small concern about a little steel pin that I foudn on ground.
I dont knwo where it came out of - if it was from the motor or soemthing else..
maybe you can you help ID it.

It is about 15mm long by 4mm dia. Concerned that motor is all back together and I am holding this pin... :-(

THoughts?

[Smelly]

I am stuck - agian..

THis damn rod retaining screw - cant get it back on.

where excalty does it go???

and, how do u put it on ??

It like a large hair-clip..

[BaysideMarine]

What rod retaining screw??

I'm up for 10 mins max Smelly so fire away quickly!!

[Smelly]

It is not a screw per say - but likea large split pin that engages the shift rod.

I had to remove this pin from power head to free up the shift rod so I can remove the botteom leg..

[Smelly]

OK people. Have the motor back together and starts and revs OK at idle.

Even though I now observe water coming out from all relevant holes at a stronger rate compared to before, now I do not see any water stream coming out of water pump indicator...

Warning horn did not go on once however.

What to do..now?

AS you know, I have put a new water pump kit in with new thermostat assy..

THoughts?

[Smelly]

Can I ask another dumb question.

Is the plastic nipple shown in this pic where I should be attaching the water pump indicator hose outlet?

[FNQCairns]

Yes probably although I cannot remember exactly, nomatter the indicator is not an important bit in the operation of the engine, plumb it up start the engine run it for 10 minutes at a fast idle 1000rpm all the while feeling the heads left to right and front to back, you should be able to feel the heads getting hot - a normal engine will never burn you in this situation.
I have a boilermaker mate who can leave his hands on these engines for as long as he likes even after a run at cruise speed!!

The moment it get's too hot anywhere for the normal person to hold their hand on it for a up to second and a bit - IT'S TOO HOT and shut down.

If it passes this test with or without the pisser working, time for a water test, the extra PSI through poppets etc on the water is sometimes needed to get it all going.
Every now and then check for temp with your hands because honestly once the thermister has triggered the temp horn the engine is too hot and problems can arrise from it.

cheers fnq

[Chimo]

Smelly FNQ RAG

Could there be some crap stuck in the tell tale / water pump indicator hose outlet?

Might it be an idea to run the motor at medium idle with hose into muffs and try some wire into the outlet before fittinght e hose to try and dislodge possible crap while there is some pressureized water behind it to flush said possible crap out?

Chimo

[wayneoro]

love this post just pulled the thermo out of my 90hp posts like this is how we learn mine was full of gravel kinda sand puting it back tomorrow cheers and good luck to us all

[Roughasguts]

Don't know that motor Smelly, first thing that comes to mind does motor have to be warm for the water to stream. ???????????

Or is the tell tail out let before the thermostat, therefore it should stream.

But anyway track down the outlet hose pull it off and clear it with your line trimmer plastic stuff, dig out where the hose goes in to the block as well.

It was streaming before wasn't it before or after warm up, with the muffs or only with the leg submeged.

[Roughasguts]

love this post just pulled the thermo out of my 90hp posts like this is how we learn mine was full of gravel kinda sand puting it back tomorrow cheers and good luck to us all

Wayneroo, glad your enjoying Smelly's journey, did you taste that build up maybe it's salt build up. Good luck with your future maintanance, jobs.

[Smelly]

Welcome aboard Wayne. Tag along and hope your access to your stats is heaps better than mine...

Yes, water was coming out of this inidcator before my work.

Heads are hot but no warniing siren comes on.

Q1 Does motor have to be warm for the water to stream?
Q2 How does extra PSI through poppets etc on the water sometimes needed to get it all going?
Q3 What comes first - THermostat regualtion or water pump indicator?

THoughts?

[Smelly]

I ran motor for about 1 min.

Beofre and after work - ear muffs.

Could it be that the old thermostats were blocked/not working and allowing water pump indicator to dispel water straight away or overriding stats???

[Smelly]

Yes probably although I cannot remember exactly, nomatter the indicator is not an important bit in the operation of the engine, plumb it up start the engine run it for 10 minutes at a fast idle 1000rpm all the while feeling the heads left to right and front to back, you should be able to feel the heads getting hot - a normal engine will never burn you in this situation.
I have a boilermaker mate who can leave his hands on these engines for as long as he likes even after a run at cruise speed!!

The moment it get's too hot anywhere for the normal person to hold their hand on it for a up to second and a bit - IT'S TOO HOT and shut down.

If it passes this test with or without the pisser working, time for a water test, the extra PSI through poppets etc on the water is sometimes needed to get it all going.
Every now and then check for temp with your hands because honestly once the thermister has triggered the temp horn the engine is too hot and problems can arrise from it.

cheers fnq

FNQC - What should come first - the horn or human touch sense ("TOO HOT!") before I need to shut down?

Smelly