Ok, so I'm coming to a 2017 XP1K from a 2016 900S. I had the timing chain startup knock on my 900S and put in an aftermarket timing chain tensioner to fix it.
I haven't noticed the knock on my 1K - yet - but I was just browsing the Polaris parts fiche today and noticed on the fiche that they're displaying a tensioner that looks like the aftermarket auto-ratcheting tensioners as opposed to the one that I've got in my machine. Mine physically looks the same as the one I had in the 900S, but that doesn't mean anything from external appearance.
It made me look at the part numbers for the various models and years and I found something interesting:
2017 XP 1000 Timing Chain Tensioner pn - 3023143
2016 XP 1000 Timing Chain Tensioner pn - 3022152 (also used on 2016 900S)
I also noticed that Polaris is listing the new part as "3023143 TENSIONER-RATCHETING,MECH" which would indicate it's an auto-ratcheting tensioner.
Kudos to Polaris if they've truly fixed the issue and listened to consumer feedback.
UPDATE 12/21/16: here's a good picture comparison to see the difference. Old style on the left and new style on the right.
I haven't noticed the knock on my 1K - yet - but I was just browsing the Polaris parts fiche today and noticed on the fiche that they're displaying a tensioner that looks like the aftermarket auto-ratcheting tensioners as opposed to the one that I've got in my machine. Mine physically looks the same as the one I had in the 900S, but that doesn't mean anything from external appearance.
It made me look at the part numbers for the various models and years and I found something interesting:
2017 XP 1000 Timing Chain Tensioner pn - 3023143
2016 XP 1000 Timing Chain Tensioner pn - 3022152 (also used on 2016 900S)
I also noticed that Polaris is listing the new part as "3023143 TENSIONER-RATCHETING,MECH" which would indicate it's an auto-ratcheting tensioner.
Kudos to Polaris if they've truly fixed the issue and listened to consumer feedback.
UPDATE 12/21/16: here's a good picture comparison to see the difference. Old style on the left and new style on the right.