Thanks a lot for this video, when I got my new one in I accidentally pulled that piece out and couldn’t figure out how it went back back together, but now I know, great video
If the spring exerts to much force , you will have the opposite issue , the compression release will be stuck on at idle , this will cause issues with idle and in many cases you can hear it tapping aka bumping the exhaust valves open. if your increase the engine rpms and this goes away your spring is exerting to much return force,, the spring return force needs to be very light . .
Was this causing a no start issue mine will crank half a turn then will have to stop and hit starter button again .. I found my spring was bad waiting on a new one .
yes, take the cam cover off on the side of the head. You'll have to take the valve cover off as well and use a magnet to pull the decomp ball forward so the pin slides all the way in. the cam has a hole in the bottom of the lobe where the ball is made to stick out for the decomp of the left exaust valve.
thank you I tried than and it did fall back down all is good so if anyone ever tried this no way no how can that ball fall out I found out ur good but thanks for thr response
You have to take the valve cover off and use a magnet. Stick the magnet on the cam lobe that has the decomp ball hole so it pulls the ball towards it then the pin will slide in. It's on the exaust side so take off your gas tank and front plastic.
NOPE, you don't wind that cam spring to add tension to it!! It clearly states on the slip of paper that comes with a new OEM camshaft "DO NOT PRE-WIND THE SPRING ONE FULL TURN OR THE COMPRESSION RELEASE WILL NOT DISENGAGE WHEN THE ENGINE STARTS". "IT IS IMPORTANT TO NOTE THAT SPRING PRESSURE IS VERY LIGHT". I just replaced a camshaft in a 2010 sportsman 500 in May of this year 2022, and the centrifugal weight acted the same way as the one you showed before you wound it and I never touched the spring. But I totally agree on the part that the polaris "engineers" should be kicked in the n#ts for making such a mickey mouse setup. I am in no way a polaris guy for MANY reasons like that.
I had polaris rebiuld my top end for bad cames now the starter dont want to turn it over and it will ripe your arm off trying to pull start it they told me i needed a new starter ill never go back ther again
wow...they obviously didn't set the decompression assembly correctly. That's a real unprofessional move on their part. A magnet on the cam lobe and putting the spring on like oem works perfect. Doing it like the video shows will add to the tension it takes to release the decomp. Definitely don't want to add tension.
Thanks a lot for this video, when I got my new one in I accidentally pulled that piece out and couldn’t figure out how it went back back together, but now I know, great video
Thanks for the info. Very helpful. Can this repair on the spring be done without removing the cam?
You do know what happens when the spring is too tight I hope !
If the spring exerts to much force , you will have the opposite issue , the compression release will be stuck on at idle , this will cause issues with idle and in many cases you can hear it tapping aka bumping the exhaust valves open. if your increase the engine rpms and this goes away your spring is exerting to much return force,, the spring return force needs to be very light . .
Was this causing a no start issue mine will crank half a turn then will have to stop and hit starter button again .. I found my spring was bad waiting on a new one .
Can this be pulled and adjusted and reinstalled without taking out the cam?
yes, take the cam cover off on the side of the head. You'll have to take the valve cover off as well and use a magnet to pull the decomp ball forward so the pin slides all the way in. the cam has a hole in the bottom of the lobe where the ball is made to stick out for the decomp of the left exaust valve.
I got a question I just tried this and now the rod won't go all the way back in what did I do wrong
I pulled the rod out rewound the spring and now the rod stops about a half inch front seating back all the way in
Your check ball is down in the hole, turn it over and see if it’ll fall back down
thank you I tried than and it did fall back down all is good so if anyone ever tried this no way no how can that ball fall out I found out ur good but thanks for thr response
You have to take the valve cover off and use a magnet. Stick the magnet on the cam lobe that has the decomp ball hole so it pulls the ball towards it then the pin will slide in. It's on the exaust side so take off your gas tank and front plastic.
NOPE, you don't wind that cam spring to add tension to it!! It clearly states on the slip of paper that comes with a new OEM camshaft "DO NOT PRE-WIND THE SPRING ONE FULL TURN OR THE COMPRESSION RELEASE WILL NOT DISENGAGE WHEN THE ENGINE STARTS". "IT IS IMPORTANT TO NOTE THAT SPRING PRESSURE IS VERY LIGHT". I just replaced a camshaft in a 2010 sportsman 500 in May of this year 2022, and the centrifugal weight acted the same way as the one you showed before you wound it and I never touched the spring. But I totally agree on the part that the polaris "engineers" should be kicked in the n#ts for making such a mickey mouse setup. I am in no way a polaris guy for MANY reasons like that.
Then what’s the fix? My 2001 is getting 125psi on compression
@@thegoodstuff-gs3slwhat's wrong with 125 psi of compression? You mean it's too much and the starter wont spin the engine?
Can that cause the starter to not spin the engine as it should? Or just the pool start?
@@thegoodstuff-gs3slyours probably isn’t closing the spring is loose maybe overheated and took the temper out .
I had polaris rebiuld my top end for bad cames now the starter dont want to turn it over and it will ripe your arm off trying to pull start it they told me i needed a new starter ill never go back ther again
wow...they obviously didn't set the decompression assembly correctly. That's a real unprofessional move on their part. A magnet on the cam lobe and putting the spring on like oem works perfect. Doing it like the video shows will add to the tension it takes to release the decomp. Definitely don't want to add tension.