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550 won,t reach high rpms

S

steve in wi

Member
Got all the fluids changed,Carb soaked and new kit, and have a problem where cannot reach spec high rpms.it only goes up 1800 no load.checked throttle linkage,not bound up.too ed the governer cover off and weights are free and has bearings and the washers in their yet.kind of puzzled why no high rpms,I can move Carb linkage,and it will raise not sure why governer isn,t letting it go up,any ideas thanks stve
 
Did it ever get to 2200? Did you work on the governor? Is there more than one hole on the governor arm for the link to the carb? Is it the correct governor? I have ground some metal off of the cast weights on my super 55 to get more speed without so much pressure on the governor parts. HTH.
 
No I didn't work on the governer,i took the top cover off and checked the weights and that bearing.their is more holes in that arm,it doesn't,t look like they ever been moved.
 
Disconnect to Carb from the gov and work throttle by hand and see if it revs out. You will know if it is Carb or gov. Then you can move towards a fix
 
How about a couple more details? There were changes in those governors so a serial number would be good. Is the weight carrier attached to the shaft? We found a couple that were loose last winter.
 
Heres whats on the plate 45-0035 89 438 -519 thats whats on the plate,but in the owners manual writen down is cs247j120746. i did move the weights when i had the cover off they opened up ,and the bearing had both washers on either side of it too.
 
Did it run at high RPM"s before you did all your work? If you put in a carb.kit, did it come with a new throttle shaft/arm? If so, check the angle of the arm (where you would attach the governor rod) to the throttle plate with the old shaft as I had one in a replacement kit that was not the same and it put the arm in a different position from where the old one was.
 
Have you adjusted that rod between the carb and governor at all? I tinkered with my 66 a few weeks ago because I had the oposite problem,it wouldn't idle. I tried setting it by the book the way I normally do those gas Olivers and it just wasn't right. There was a real narrow "sweet spot" to get the high speed and idle right without it surging,but I seem to have found it. Call it precision guesswork.
 
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