Cold Weather tuning of Stella 2T carb

ankdworak · Post by **ankdworak** » Fri Feb 22, 2013 1:55 am

Well my wife just surprised me with a 2008 Stella 2T. It's in great condition and I can't wait to ride it. The problem is that I live in Minnesota and, as I type this, a major snow storm is bearing down on us. I know that it will be a while before I get to take her out, and my main question is that when I do, what do I need to consider doing (rejetting, adjusting, etc.) to the carb to assure that it runs properly in the colder weather? I wont ride it on snow or ice, but here in Minnesota in the spring you can have upper 20s in the morning and 50s to 60s by the afternoon. My dealer where my wife picked it up said something about carb jets being roughly rated for 20 degree intervals (i.e. 40-60, 60-80 degrees, and so on). Does this mean that I have to carry several different sized jets and constantly swap them out until the weather gets to be more summer-like and stable? I'd like to hear from some Minnesota Stella 2T owners (or other cold climate state owners) regarding what you do to protect your Stella during cold weather rides. I generally don't ride in weather much colder than 30 degrees F, but when I do ride I want to make sure that I don't compromise my engine in any way. I did a quick search and was not able to find anything in the archives that looked like it would help with my concerns. Any help from Stella Nation would be greatly appreciated.

fisher1 · Post by **fisher1** » Fri Feb 22, 2013 3:55 pm

Does the 2T have the stock exhaust and air filter on it or has it been changed?

Stitch · Post by **Stitch** » Fri Feb 22, 2013 9:36 pm

Not sure, I've ridden mine with the same jets from 20 degrees to mid nineties.
I'm not gonna say it is perfectly tuned at lower temps, but I don't think I'm hurting it. Even summer days/nights can have a 40 degree temp swing, and I haven't seen anyone rejet when the sun goes down.

ankdworak · Post by **ankdworak** » Sat Feb 23, 2013 4:07 pm

fisher, it does have an upgraded muffler (not sure which at the moment, but I'll ask when I pick her up). Not sure about the air filter - my guess is that it's stock though.

viney266 · Post by **viney266** » Tue Feb 26, 2013 3:38 am

Scooters are not "hi-tech" machines like a racing two-stroke. If there is a pipe on it, she has been rejetted and hopefully whoever did the jetting set her up just a little rich. It may cost you a 1/2 a HP but it makes the bike safe. Ride it...if it feels good it probably is, but the best way to be sure is to have a look at the spark plug. Light chocolate color...like coffee . If it is bright white= too lean. If so, come here for more advice.

BuddyRaton · Post by **BuddyRaton** » Tue Feb 26, 2013 3:11 pm

If you're concerned upjet a couple of points on your main for winter. The worst that can happen is you foul a plug.

The solution is built right into the air box cover but nobody reads the instructions. The easiest solutionis to stick the winter plug back in in the winter and take it out in the summer.

Thar's it...30 seconds to adjust for weather and that includes taking off and replacing the cowl.

ankdworak · Post by **ankdworak** » Tue Feb 26, 2013 5:35 pm

Viney and Buddy,
You both give sound advice. I think I'll probably incorporate what both of you are saying. So far the Stella is still at the dealer - haven't picked her up yet, as still have plenty of snow on the ground. Man am I getting the itch though.

BuddyRaton · Post by **BuddyRaton** » Tue Feb 26, 2013 6:30 pm

If it is at the dealer ask them to check the jetting set up. If they are familiar with Stellas they will know if you are set up right. Don't be afraid to ask them questions...it's how we all learn!