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Ign Timing & Carb Link Adjust P115

K

Klink

Regular Contributor
I'm setting the timing mechanically just like the factory service manual describes in the "Periodic Maintenance" section and I'll have some questions as I go along.


The first question concerns the Adjust length of full advanced stopper (1), the specs call for the length to be 26mm, but the drawing is not clear from where the measurement is taken, it looks like it is from about half way from the screw mount in the drawing, but if I use that point then the magneto control link (3) is not long enough to reach the mark, it can't be adjusted any longer. I therefore, set the full advanced stopper at 26mm measuring from the base of the screw mount to the tip. Is that correct?

Full Advance Stopper Adjustment - Copy.jpgimg643.jpg
 

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Here is the other link that must be adjusted exact per the manual, the throttle cam control link, which must be set at 53mm:
img645 - Copy.jpg
It looks like from here everything else is set by these two fixed links.
 
[email protected] said:
Hello,will these adjustments help my problem,94,2 stroke,yam,115,idles to low to shift?
Click to expand...

I would just adjust the idle adjustment screw (there is only one screw to adjust) and see if the solves your problem. It takes like 30 seconds to do. Just turn on the engine with the cowl off, and turn the idle screw in till you get 700 -800 RPM (factory specs)at idle. See the factory manual page 3-15. Then try it out and shift to forward and see if it solves your problem. My Yamaha tach says it is idling at around 600-700 and it shift fine.

What I had to do and the subject of this thread, was caused by my having rebuilt the carbs, and in retrospect, I don't think I needed to do the timing and link adjustment, that it was fine. Water under the bridge, it is fine for sure now, after I did it.
 
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