lync &sync

[zanman]

good day all:can some one tell me what lync&sync is, and does my 55 johnson 5.5 hp have it, and last but not least how do i know if it is set up correctly.<br />thanks a kazzilion Z

 

[Paul Moir]

Re: lync &sync

Link and sync generally means a carburator linkage adjustment, and to have the carburator butterfly valve (throttle plate) opening synchronized with the spark advance.<br />Since you only have one carburator, the adjustment is fairly simple. The carburator's throttle shaft is moved by a follower that runs along a cam on the armature plate, just underneath the flywheel. You want to adjust that cam (by loosening the screws under it) so that the throttle shaft *just* begins to move when the cam pickup at the center of that mark.<br />This procedure is better explained in a service manual, along with tonnes of other information. You can get one here, or often you can borrow one from your local library.<br />Good luck!

 

[Solittle]

Re: lync &sync

http://www.theoutboardwizard.bizhosting.com/parts_service_and_owners_manuals.html

 

[zanman]

Re: lync &sync

would this be the cause of a small rattling sound from the motor at wot,could it be an ignition(retarded or advanced to much)problem.<br />the motor seems to run out of acceleration before the throttle is wide open, once it hits that spot on the throttle where it wont go any faster,it starts to rattle.<br />its a cd-12 5.5 hp on a 14ft starcraft aluminum.<br />any help appreciated <br />thanks again Z

 

[Paul Moir]

Re: lync &sync

Take a close look at how the throttle linkage works. I *think* on your engine the spark advance gets stopped at about 1/3-3/4 throttle. That is to say, the armature plate stops turning. After that, I think it just continues to open the carburator's throttle plate.<br />So, if I'm right, link and sync doesn't really effect wide open throttle performance.<br />Make sure, though, that the armature plate is moving freely and that it reaches it's (non-adjustable) stop properly.<br />I had an engine once that had exactly the same symptoms - but the clicking was pretty faint. It turned out that the cracked ignition coils were arcing over at a particuliar RPM, so the engine would hit a plateu where it would misfire and not go any faster. They made beautiful sparks at pull start speeds though. A clicking could be heard which was the coil arcing over.<br />Make sure your pull start isn't hitting the flywheel too. That makes some pretty loud clicking!<br /><br />PS - I had a look at my history. Somehow I end up replying to your questions a lot! What are the chances?