1962 Merc 110 fuel mix

[bimmerbit_93]

I have a Merc 110, 9.8 hp that I recently bought. The ser. # is 1547929. I have rebuilt the carb but I'm not sure what the fuel mix on this vintage Mercury should be. Can someone help with this? It has a white case, but there is some green showing on the lower unit where it is nicked in places. Any help would be greatly appreciated.

 

[Yepblaze]

Re: 1962 Merc 110 fuel mix

It will be fine on 50:1

 

[bimmerbit_93]

Re: 1962 Merc 110 fuel mix

Thanks for the quick response. I really appreciate it.

I am also having a problem with the water coming out of the pee hole. I replace the impeller which was in pieces, and thought I got it all out, but at first it was only spraying a little water or none. Later I restarted it and got a good stream. Then I changed the plugs because it didn't want to idle down smoothly. Now I am back to no water coming out at all. I am running it in a barrel of water with the inlet hole about 9 inches under the water.

 

[Yepblaze]

Re: 1962 Merc 110 fuel mix

Sometimes running in a barrel can allow too many bubbles to enter the water intake and impair flow.

Otherwise I like to have them running then squirt the garden hose up the pee hole backflushing that hose and fittings. By having it running I get an immediate view as to weather it clears or clears and plugs back up again right away. In which case I squirt it again.

 

[bimmerbit_93]

Re: 1962 Merc 110 fuel mix

Thanks for the hose idea. I will try that tomorrow if I can get to it again.
I also had a question about adjusting the carb. I seem to have it pretty close to good, but I'm not used to not being able to adjust it with the motor running. The starter rope being in the cover doesn't allow for starting the motor with it in the open. Is there a recommended setting? It seems strange that you can't adjust it while it's running. I hope this isn't a dumb question, but sometimes I figure out the difficult and stumble over the obvious.

 

[AMD Rules]

Re: 1962 Merc 110 fuel mix

Not a factory suggested method, but I start my old small motors (with cowl mounted recoil) with a drill and socket on the flywheel nut. Just use a loose socket that comes off the nut easily and is well secured to the drill. Just a suggestion.....

Or rig up a section of rope to grab the flywheel castle and rope start it, cowling off.

 

[bimmerbit_93]

Re: 1962 Merc 110 fuel mix

I like the drill idea. Thanks. You have been a big help.

 

[AMD Rules]

Re: 1962 Merc 110 fuel mix

Just don't let the extension cord drag in the water when you head out on the lake...lol

Just kidding of course.

I actually start the 6hp with a cordless. Your 9.8 will probably fire up with a cordless as well, assuming it starts easily.

 

[bimmerbit_93]

Re: 1962 Merc 110 fuel mix

I have an 18v cordless. I'll leave the charger in the garage for this. My extension cord wouldn't be a good idea.
Another question on the carb. I rebuilt it because it was leaking gas from the throat of the carb and out the bottom. It has a new float, etc. Now it starts and runs but not consistently or as easily as I'd like, but it still tends to leak some gas out the front while I'm starting it. I have run in the adjustment screw in and backed it out about 1/2 turn now. I'll be able to see what it is doing better with the cowl off. Any other ideas are welcome.

Thanks again.

 

[bimmerbit_93]

Re: 1962 Merc 110 fuel mix

Okay, I have had the carb off and reset the float per the manual and nothing has changed with the fuel problem and how it runs. When I choke it and turn it over fuel runs out the throat of the carb. When it starts it only runs for a little bit and stops. If the float and float valve are working properly, what else would cause this problem?

 

[AMD Rules]

Re: 1962 Merc 110 fuel mix

Did the reeds behind the carbs look okay?

Still sounds to me like the float is set too high, needle/seat isn't sealing properly, and/or the idle jet may be worn out or set to far out.

May be a strange question, but did you check if the float actually floats?

Do you get a firm bulb when you prime it with the bulb, without having fuel coming out the carb?

 

[bimmerbit_93]

Re: 1962 Merc 110 fuel mix

Did the reeds behind the carbs look okay?

Still sounds to me like the float is set too high, needle/seat isn't sealing properly, and/or the idle jet may be worn out or set to far out.

May be a strange question, but did you check if the float actually floats?

Do you get a firm bulb when you prime it with the bulb, without having fuel coming out the carb?

To be honest I didn't look at the reeds behind the carb, but I will when I take it back off.
The float is new and it does float, and I do get a firm bulb without having fuel come out of the carb. The fuel doesn't seem to come out of the throat of the carb until it is choked. The more choke, the more fuel leaks out the bottom under the throat. I did look at the idle jet when I rebuilt the carb and it seemed smooth.

I also tried back flushing the pee hole and took the screw off of the fresh water flush, cleaned it out and flushed water back through that and the exhaust/pee hole. I still don't get enough water out of that hole, so I am thinking I will take the power head off and see if there is debrie from the impeller in there.

I probably won't be able to get to it until Monday now but I will double check these issues as well as the reeds. Thanks.