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hey guys,
im new to motor boats (been sailing since i was 5, but im no expert, little rusty havent been out in a long time) and i just picked up a outboard motor. i havent checked the s/n but its a 96-98 Merc 8hp 2 stroke and i have a few questions. i fairly good at using my auto tools, so i dont think much on this is out of my league with a little direction.(***is there a shop manual or maintenance manual or owners manual anywhere??**)
i want to give her a good tune up, but the boat is at my cottage and im not.. what kind of spark plugs does it take? i noticed the current 1s are NGK but no idea the model number.
ive heard that the 9.9 can be converted to a 15hp with just changing out the carb and i think exhaust manifold, i was under the impression that the 8hp was the same as the 9.9 just a similar form of detuning (this is just something i heard years ago)...maybe a restrictor plate?? any way to squeeze a couple ponies out of this thing?(im on a small lake and i dont need it but i like to tinker with things)
im going to be doing a lower unit fluid change asap, thats top of the list, how much fluid does it take and is there any brands of g/o that are better than others? also what specs should i look for? all i see is "mercury lower unit oil" no specs on the bottles. also, where can i get a lower unit g/o pump that threads in the fill hole?
ive read there are 2 different impeller sizes that merc uses, how do i know which one i need? and what would it be?
my prop is in ok shape, no bends but it had tapped a few things from previous owner so it was grinded down slightly to take the sharp edges off...but besides that, would i benifit from putting on a slightly larger 1? or 1 that is 4 blades? not worried about power off the line, more top end would be nice(ya i know its just a 8hp lol)
i will eventually (big eventually especially with their boat sittin just 4 docks from mine lol) be buying a 16-19ft sport/fishing boat. my sister and her husband just got a legend with a 60 merc bigfoot i think its called. they put a lot of addons on it..ill probably be looking for the same or similar boat to theirs but hopefully in good shape used, not new like they did.
im new to motor boats (been sailing since i was 5, but im no expert, little rusty havent been out in a long time) and i just picked up a outboard motor. i havent checked the s/n but its a 96-98 Merc 8hp 2 stroke and i have a few questions. i fairly good at using my auto tools, so i dont think much on this is out of my league with a little direction.(***is there a shop manual or maintenance manual or owners manual anywhere??**)
i want to give her a good tune up, but the boat is at my cottage and im not.. what kind of spark plugs does it take? i noticed the current 1s are NGK but no idea the model number.
ive heard that the 9.9 can be converted to a 15hp with just changing out the carb and i think exhaust manifold, i was under the impression that the 8hp was the same as the 9.9 just a similar form of detuning (this is just something i heard years ago)...maybe a restrictor plate?? any way to squeeze a couple ponies out of this thing?(im on a small lake and i dont need it but i like to tinker with things)
im going to be doing a lower unit fluid change asap, thats top of the list, how much fluid does it take and is there any brands of g/o that are better than others? also what specs should i look for? all i see is "mercury lower unit oil" no specs on the bottles. also, where can i get a lower unit g/o pump that threads in the fill hole?
ive read there are 2 different impeller sizes that merc uses, how do i know which one i need? and what would it be?
my prop is in ok shape, no bends but it had tapped a few things from previous owner so it was grinded down slightly to take the sharp edges off...but besides that, would i benifit from putting on a slightly larger 1? or 1 that is 4 blades? not worried about power off the line, more top end would be nice(ya i know its just a 8hp lol)
i will eventually (big eventually especially with their boat sittin just 4 docks from mine lol) be buying a 16-19ft sport/fishing boat. my sister and her husband just got a legend with a 60 merc bigfoot i think its called. they put a lot of addons on it..ill probably be looking for the same or similar boat to theirs but hopefully in good shape used, not new like they did.