Shew, long time away from here... feels good to be back. Just started breaking out the fishing gear and boat to get things started for the summer. Got a 1960 Johnson 18 HP here, and did alot of work on her last summer and into the fall. Ran outta time at the end of the year, gets cold here quick, and couldn't finish things up. Poor midrange is the prob. I know its gotta be a link and sync problem, because everything else checks out great. WOT runs great, and idles farely well. Sounds like its running a little on the rich side at idle, because it won't idle very high. I know its gotta be a link and sync because i've been through everything else! Need some help on this, the ol' Seloc manual is a little hazy in this department. Thanks guys.
<br /><br />This one isn't too bad though. Hook a piece of wire onto the carb's throttle shaft somewhere so you can exagerate it's movement. This step is really important 'cause it's almost impossible to tell. Now starting at idle (engine off) advance the throttle until the wire on the throttle shaft just moves. Look up at the little roller that follows the cam ('ramp') bolted to the magneto plate. The little mark on the cam should be at the centre of the roller. Some cams have two marks and the centre of the roller should be between those marks.<br />If it's not, loosen the bolts that hold the cam on (a little 1/4" crecent wrench is handy for this) and swing the idle end of the cam in/out to suit. Tighten the bolts and try again.<br /><br />Totally ignore picture 6 (it's wrong), and wonder about pictures 5, 8, 12, 16 and 3. <br /><br /><br />Good luck, and if you need any clarification just ask!