Just a question... as some of you know I purchased my first 4s sled, is it smart to bring a jump box with on those bitter cold mornings just in case on those initial starts? when we were up in Grand Marais last year, mind you was bitter cold people staying next to us never left one day as sleds wouldnt start and were 4s, I am running 0w40, recommendations? battery is easy to get at.
4s and jump box
- Thread starter euphoric1
- Start date
I carry one. I've never needed it but I guess that's the purpose.
heckler56
Well-known member
The only time we needed it was in the AM at first start up (our crew is all 4’s for 15 years). Last year I had an issue on a sub zero AM. Turned out it was a frozen relay. Now I have a back up relay. Always carried a back up relay with the 2011 4 stroke and sled has never failed to fire up. The 2019 900T (Gen 4) are known as the frozen sleds. Have to chisel the skid in the AM and the relays are prone to freeze with minuet moisture.
Ken and I always carried jumpers for our apex only jumped once sled to sled when his stator went out. We got his going jumped from mine but stator was catastrophic failure but got him home. That gave me religion purchased a power pak always carry now just incase. I would say at minimum carry jumpers but since I ride solo power pak is best for me.
Go Fast or Go Home
Active member
I carry a small power pack, small set of jumper cables, and extra relays.
EDIT---I have never had to use them. ( Fingers Crossed )
Don~
EDIT---I have never had to use them. ( Fingers Crossed )
Don~
I have a 4 stroke Doo, and have experienced many sub 0 F mornings on Canadian trips. Some -35, 40, and my sled always started. How ever since I've been running 4 strokes I've packed a pocket sized jump pack with us, and a starter relay just in case. Never used either, but better safe than sorry. 
Best to tell members it’s a cat crosstour 1100 4s for spare relays not a Yamaha or doo engine. Polaris very limited in 4s models most discontinued so I wouldn’t expect them to be much help.
You can get doo relays from napa, doesn't have to come from doo. I would think you could get cat relays there too, it will have numbers on it that can be cross referenced.
heckler56
Well-known member
Brian, like latner said, napa or other auto parts. Last year in Munising when mine froze I picked one up in town at the napa. It is all about matching the electrical requirements and prongs. Turned out at NAPA they were more $s than Ski Doo, the upside is it is sealed better and less prone for water/ice intrusion…
dfattack
Well-known member
That's what I have. Agree with your comments
SledTL
Active member
I think knowing where your relay is at is the most important with these 4 strokes, and possibly having a backup in your trailer or travel box. Never had any battery issues knock on wood, but have had issues with realys freezing. Don't start the sled unless you plan to fully warm it up and drive it around. "Fake warmups" cause plugs to foul and creates relay moisture.
heckler56
Well-known member
I do have the NOCO but don’t carry it. Like Sledtl said, once warmed up no need for the rest of the day.
One other suggestion, I always carry a bottle of Heat. If we know the next morning will be sud cold we pour in before returning to camp. It also is there in case of bad fuel during the day.
One other suggestion, I always carry a bottle of Heat. If we know the next morning will be sud cold we pour in before returning to camp. It also is there in case of bad fuel during the day.