Darren Hughes
New member
ive just started stripping down the cooling system on my mercury 7.5 hp blueband thunderbolt ignition.its made in belgium and the serial number is 9264727 . can any one tell me what year this is and where i can get a manuel for it. thanks. ive started stripping her down as she wasnt throwing any water out the water outlett( a tiny trickle) changed the impeller,stil no joy so opend up what i believe to be cooling chamber where the water enters and exhaust gasses exit.this was clogged and blocked with sand and grit.however after removing the cover the 2 rubber gaskets are perished and theres a metal exhaust plate ( i think thats what it is) this seems warped . so wandering if all these gasketts and stuff are still available for what i fear might be quite an old engine.any help or advice would be much appreciated. please excuse my ignorance as its my first ever engine strip.thanks.