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    20hp merc. Runs good, stalls then runs good

    I have an older 20hp merc tiller steer. The serial number is gone so I have no way of knowing exact year. If I had to guess Id say late 70s early 80s, Black w/blue band around the cover and it says "thunderbolt ignition system" on the front cover. Ok, the problem. It will start up and run great...
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    prop spins in neutral. is this normal?

    I have a late 70s 20hp merc Thunderbolt and the prop spins in neutral, not with near as much force as when in gear but it still spins. Is this ok/normal??
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    Need lower unit help on 20hp and 9.8hp

    I have a 20hp merc that leaks gear oil when you leave it proped all the way up on the latch for a few days. It is a black and blue tiller motor that I rekon is mid 70's to early 80's though I don't know for sure cause there is no S.N.. I'm guessing it's the shift shat seal and wana know is there...
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    1970 merc 110 9.8hp fuel leak???

    On the very top rear of the float bowl there is a small hole, maybe a vent? If I squeeze the primer bulb more then about 2 times fuel sprays out of that hole. Is this normal? It seems like a fire hazard to me. Anyone had this issue?
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    1969??? Merc 110 9.8hp carb I.D.

    iBoats sells 2 diff carb kits for my 1969(I think,s.n.2702517) Merc 110 9.8hp. How do I know which one I need?
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