75MIRRO16
Member
1974 Johnson 40 Sea Horse, pull start.
Model = 40RL 74S
Seriel = J4032440
Got this on a boat I just purchased, came with new coils and a "rebuilt" carburetor. I had to pull the carb and drain all the old nasty fuel from it and the fuel tank. The carburetor is very clean, and seems to have a new needle and bowl gasket. Also the motor has newer coils.
Turns out the flywheel key was sheered, after replacing it and refueling it fired up after only a few pulls. I've been out with it on two short trips, and it definitely gets up and goes.
Unfortunately the issues I have is the motor seems very rough at lower RPM and it seems to be using a lot of fuel. I had 5 gallons in it, I probably used 4 of them in the two short trips. I have no rod on my air fuel screw so I can't adjust it without taking the cover off. Is that important? Also, I had the screw at about 2.5 turns out and the carb was popping at low RPM, and still rough. I turned the screw in (maybe 1 turn out) and the popping stopped, but the motor is still very rough down low.
Any help would be appreciated!! Thanks!
Here it is running yesterday.
Model = 40RL 74S
Seriel = J4032440
Got this on a boat I just purchased, came with new coils and a "rebuilt" carburetor. I had to pull the carb and drain all the old nasty fuel from it and the fuel tank. The carburetor is very clean, and seems to have a new needle and bowl gasket. Also the motor has newer coils.
Turns out the flywheel key was sheered, after replacing it and refueling it fired up after only a few pulls. I've been out with it on two short trips, and it definitely gets up and goes.
Unfortunately the issues I have is the motor seems very rough at lower RPM and it seems to be using a lot of fuel. I had 5 gallons in it, I probably used 4 of them in the two short trips. I have no rod on my air fuel screw so I can't adjust it without taking the cover off. Is that important? Also, I had the screw at about 2.5 turns out and the carb was popping at low RPM, and still rough. I turned the screw in (maybe 1 turn out) and the popping stopped, but the motor is still very rough down low.
Any help would be appreciated!! Thanks!
Here it is running yesterday.