have johnson 50 fresh carb kits .new coils .new plugs runs and shifts great
took motor off boat sat acouple of days . tryed to manual choke it .
has good solid fire .refused to start .sprayed fuel mixture into carbs
firedright up new fuel pump also fresh gas . and lines.
was wanting to know if anyone has good starting process for older motor .
only have probs after it sits .a couple of days. electric choke not working
selinoid bad .
as always thanks for tour help.
Benny..... Cold Engine Starting procedure: Engine in vertical running position (not tilted). Pump primer bulb up hard. Apply a slight bit of throttle. Turn key to start position and engage electric choke if it exists..... if no electric choke, have manual choke set to closed. Release choke as soon as engine fires/starts.
Hard starting after sitting a few days could be contributed to slightly fouled carburetors OR incorrectly adjusted carburetors.
(Carburetor Adjustment - Single S/S Adjustable Needle Valve)
Initial setting is: Slow speed = seat gently, then open 1-1/2 turns.
Start engine and set the rpms to where it just stays running. In segments of 1/8 turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to respond. As you turn the valve in, the rpms will increase. Lower the rpms again to where the engine will just stay running.
Eventually you'll hit the point where the engine wants to die out or it will spit back (sounds like a mild backfire). At that point, back out the valve 1/4 turn. Within that 1/4 turn, you'll find the smoothest slow speed setting.
Note: As a final double check setting of the slow speed valve(s), if the engine has more than one carburetor, do not attempt to gradually adjust all of the valves/carburetors at the same time. Do one at a time until you hit the above response (die out or spit back), then go on to the next valve/carburetor. It may be necessary to back out "all" of the slow speed adjustable needle valves 1/8 turn before doing this final adjustment due to the fact that one of the valves might be initially set ever so slightly lean.
When you have finished the above adjustment, you will have no reason to move them again unless the carburetor fouls/gums up from sitting, in which case you would be required to remove, clean, and rebuild the carburetor anyway.