Mercury 4hp thermostat 4 stroke.

[Marlene]

Mercury 4hp not pumping water, possibly thermostat, undone the two bolts holding the housing, wacked with hammer not coming apart, ideas?
Further where can I buy a workshop manual?

[Fenlander]

Is this your model or near enough...

http://elrincondepitagoras.es/PAGINA...e%20Manual.pdf

If you have both bolts out OK then try boiling water poured on the housing and further gentle hammering with a wooden block taking the blows. Sometimes putting close fitting nails into the two bolt holes (but not quite going into the threads) and putting a rocking force can ease such things off.

However surely on your model the water flow exits the tell tale before the stat so the problem likely to be elsewhere??

[Marlene]

Hi, I used a bigger hammer and it came apart, tested thermostat and that was ok, I have just changed the impeller….
I have trying to buy a manual ��

[Fenlander]

Is that online one not correct for your model?

[Marlene]

Yes, thank you, it’s brilliant.

[Fenlander]

Ahh that’s good.

[Steve509926]

Originally Posted by Marlene

Hi, I used a bigger hammer

Classic

[willk]

Originally Posted by Steve509926

Classic

Couple of lads I used to 'work' with, referred to loosely as Technicians, had a mock crest on their workshop wall consisting of Crossed ball pein Hammer and a Condom, motto inscribed below "If you can't fix it, f##k it"


The biggest hammer in any toolbox is referred to as the 'Gentle Persuader'.

[John Kennett]

Don’t force it son. Use a bigger hammer