76 johnson 25, smoke needle

[trx88]

alrighty, this motors come along nicely

after new points and condensers it runs on both cylinders
it idles nicely and seems alright except for two things

1) How do I know where the long rich/lean idle screw at the top of the carb should be at? I know you only go a quarter turn or so with them but since the carb kit its been off..
Ideas welcome

2) I am under the assumption that ive got this motor in good timing. I gapped the points to .020 like the flywheel says. However it still smokes more than i would think it should. Is it the cold outside?
Ideas welcome

 

[jasper60103]

Re: 76 johnson 25, smoke needle

1) This should help with the carb adjustment.
http://forums.iboats.com/showthread.php?t=167352

2) I'm not sure how much smoke is... "more than i would think it should", but
here's an example is real nice running johnson like yours. Very nice motor.
http://www.youtube.com/watch?v=cJKZd9wZqrQ

 

[1946Zephyr]

Re: 76 johnson 25, smoke needle

Your motor should have the low speed needle set at about 1 1/2 turns out from bottom and the knob put back on right at the half way point, so you can have room to turn either direction 1/2 turn.

 

[trx88]

Re: 76 johnson 25, smoke needle

i bought it with the linkage wire, and the knob missing
i have tried making one out of a wire hangar, but it vibrates out at either end, and copper wire so i could solder a knot on the end and it wouldnt raddle out, but all copper i have tried so far is too soft..

 

[trx88]

Re: 76 johnson 25, smoke needle

yeah mine might smoke a bit more but i may just be seeing steam and the smoke because its cold outside

i bought it with the linkage wire, and the knob missing
from the low idle needle
i have tried making one out of a wire hangar, but it vibrates out at either end, and copper wire so i could solder a knot on the end and it wouldnt raddle out, but all copper i have tried so far is too soft..


by the way that is a beautiful motor, mine is like that but its got a bad cowl and needs torso and pan painted and has an evinrude transom mount?

many many many thanks for the links and the needle help!