98 583 won't hold rpm

[markoo]

I have a 583 summit and on the trail it will hit 8000 rpm and stay there. On a hill it will hit 8000 and then start to drop. It will drop right down to 6000 rpm. I cleaned the secondary, put in a new spring and set the pull to 18 lbs. Still won't hold rpm. Any Ideas what could be causing this?

 

[ak]

How much weight is in the primary? Did it just start doing this.

 

[DValentine]

What clicker number are you on, on the primary? If you drop to number 6 does the rpm go up above 8000? When was the last time the primary was cleaned?

 

[markoo]

My son has only had the sled for one year. It was running at 7800 so i changed the clickers form 4 to 5 and now it runs a bit higher. Could this problem be from a worn primary?

 

[finndoo]

I had the same sled same problem, wound up being bad rollers and bushings in the primary if I recall. Maybe not for you but worth a look.