# Polaris question?
**URL:** https://forums.speedlife.net/t/polaris-question/21430
**Category:** NYSpeed Off Topic
**Created:** [December 10, 2006, 3:12pm UTC](https://forums.speedlife.net/t/polaris-question/21430 "2006-12-10T15:12:01Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@Kramer](https://forums.speedlife.net/u/Kramer)
#### Post date: [December 10, 2006, 3:12pm UTC](https://forums.speedlife.net/t/polaris-question/21430/1 "2006-12-10T15:12:01Z")
i recently picked up a pro x 440, just curious what is the deal with that dial with the different letter selections, i think timeing but not really sure
---
### Author:  [@oneslowdsm](https://forums.speedlife.net/u/oneslowdsm)
#### Post date: [December 10, 2006, 5:31pm UTC](https://forums.speedlife.net/t/polaris-question/21430/2 "2006-12-10T17:31:07Z")
with the race sleds it might be a dial for different grades of gas. i know for ski-doos they have a switch for 110 and on for 89 or 93
---
### Author:  [@suzukiriderman](https://forums.speedlife.net/u/suzukiriderman)
#### Post date: [December 10, 2006, 8:04pm UTC](https://forums.speedlife.net/t/polaris-question/21430/3 "2006-12-10T20:04:24Z")
Is it by the handlebars? If so, it’s probably for the suspension.
---
### Author:  [@ILCisDEAD](https://forums.speedlife.net/u/ILCisDEAD)
#### Post date: [December 10, 2006, 8:45pm UTC](https://forums.speedlife.net/t/polaris-question/21430/4 "2006-12-10T20:45:02Z")
the big dipper points to it
---
### Author:  [@Kramer](https://forums.speedlife.net/u/Kramer)
#### Post date: [December 10, 2006, 9:11pm UTC](https://forums.speedlife.net/t/polaris-question/21430/5 "2006-12-10T21:11:10Z")
nope under the hood
---
### Author:  [@snowracer101](https://forums.speedlife.net/u/snowracer101)
#### Post date: [December 11, 2006, 11:48am UTC](https://forums.speedlife.net/t/polaris-question/21430/6 "2006-12-11T11:48:28Z")
It’s to retard the timing so you can run dif grades if octane.
---
### Author:  [@sam1](https://forums.speedlife.net/u/sam1)
#### Post date: [December 11, 2006, 6:43pm UTC](https://forums.speedlife.net/t/polaris-question/21430/7 "2006-12-11T18:43:26Z")
its for 87 or 93 octane.
later ones had it on the ignition
---
### Author:  [@99LS1VERT](https://forums.speedlife.net/u/99LS1VERT)
#### Post date: [December 11, 2006, 7:34pm UTC](https://forums.speedlife.net/t/polaris-question/21430/8 "2006-12-11T19:34:03Z")
Where are the letters located?
BTW are you reclutching that sled because they engage at 5000 and rev out at 8800 rpm not so great for long trail rides… or gas mileage.
---
### Author:  [@RedrRocket](https://forums.speedlife.net/u/RedrRocket)
#### Post date: [December 11, 2006, 7:53pm UTC](https://forums.speedlife.net/t/polaris-question/21430/9 "2006-12-11T19:53:04Z")
what year pro x is it?
they had different swtiches for the ignition timing and for the exaust valve timing. depending on the year. my brother has that setup on his 800 prox.
i believe it is for 93 or 103 octane… they like there go juice. some models also came with a switch on the bars just for the timing on a holeshot. to get the pipe hot.
---
### Author:  [@Kramer](https://forums.speedlife.net/u/Kramer)
#### Post date: [December 11, 2006, 8:16pm UTC](https://forums.speedlife.net/t/polaris-question/21430/10 "2006-12-11T20:16:36Z")
there are 2 different heads a 92 octane and a 110 or 112 i have the 92 on
---
### Author:  [@KuntryQuestTSi](https://forums.speedlife.net/u/KuntryQuestTSi)
#### Post date: [December 12, 2006, 4:57pm UTC](https://forums.speedlife.net/t/polaris-question/21430/11 "2006-12-12T16:57:38Z")
> [@RedrRocket](#):
>
> what year pro x is it?
>
> they had different swtiches for the ignition timing and for the exaust valve timing. depending on the year. my brother has that setup on his 800 prox.
>
> i believe it is for 93 or 103 octane… they like there go juice. some models also came with a switch on the bars just for the timing on a holeshot. to get the pipe hot.
if im not mistakin the pro x is 2 stroke no valves transfer ports timing yes
not trying to be a smartass but some ppl do try to adjust there valves on there 2 stroke and/or buy a cam for it, think its rare and worth a lot once they cant find one for it lol