Polaris rmk 850's
- Thread starter guido88gt
- Start date
pfi572
Active VIP Member
I think it was a problem with the 850 during break in from what I remember reading .
With the re-flash is sled put back into break in mode ?
With the re-flash is sled put back into break in mode ?
gedakbx
Active VIP Member
try one heat range warmer plug
AreWeThereYet
Active VIP Member
2019 850 sks 66hrs, I know I have been flashed once maybe twice,.. no plug issues here. Original plugs, almost 2000km
My 2019 has never fouled a plug, 3000km on it now. But it seems like some of them have this problem chronically and no one knows how to fix it.
The only technique thing I can mention is that I don't warm the sled up much with idling. Once it shows 0 deg C I start moving it, and if I don't need to move it, I shut it off until I do need to move it. So if you are letting it idle to warmer temps than that, maybe don't.
The only technique thing I can mention is that I don't warm the sled up much with idling. Once it shows 0 deg C I start moving it, and if I don't need to move it, I shut it off until I do need to move it. So if you are letting it idle to warmer temps than that, maybe don't.
gunner3006
Active VIP Member
I believe it was in the New Polaris 850 thread. If I’m not mistaken there was a few that fouled plugs?
AreWeThereYet
Active VIP Member
I also shut my sled off with the key switch, and not the kill switch. If i use the kill switch it will sometimes back fire, then take a couple pulls to start.
gdhillon
Active VIP Member
so you just putt till it gets warm? I was under the impression touching the throttle under 90 was a no no for these/polaris sleds? (Mine is a 20 800)
LUCKY 7
Active VIP Member
I thought that too
Yeah, I want to start moving it at 32F, and I'll baby it until closer to full operating temp which manual says is 120F 49C.
It will help but won’t solve the problem. Almost every 19 needed at least 1 reflash. Save yourself the grief of changing plugs on the side of a mountain.
AreWeThereYet
Active VIP Member
There was 2 not just 1 reflash for the 2019
bsoluk
Active member
I had two reflashes on my 19 850 and still fouled plugs. Ended up trading it for an alpha.
Teth-Air
Active VIP Member
I ran the 6's, even warmer and iridium. They helped noticeably.
gedakbx
Active VIP Member
in what year of 850?
Teth-Air
Active VIP Member
It's a 19 with the latest flash. I went back to the 9's being worried about the leaner flash but it still ran better with the 6's and the 2020.5 flash.
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