sx600
New member
- Joined
- Aug 10, 2004
- Messages
- 107
At what temp do most people suggest turning this on? Book says at temps below 32F.
Should we be following that? I forgot the sled had this on it and was running without the heater on in 0F conditions. The sled ran fine. I know the heater is a preventative type thing to prevent ice build up in the carb, right?
Should we be following that? I forgot the sled had this on it and was running without the heater on in 0F conditions. The sled ran fine. I know the heater is a preventative type thing to prevent ice build up in the carb, right?
ViperTom
New member
I've never turned the heater off on mine.
Tom
Tom
I usually only run mine when it gets below 15F and i never had any problems. 
yamyrider
Active member
I never turn them off on either of my yamahas.
If You Run Your Jetting Real Close, I Turn It On Around 20 Degrees. This Seems To Richen The Fuel Mixture A Little.
caribfuture
New member
I was wondering the same thing. Put arount 75 miles on Saturday in something like -10 to -20F (wind chill may have been even colder). Because it was so cold, I turned them on just because I could. Don't know if it made any difference because this is the first time out with the sled as I bought it used in October. It's supposed to be a little warmer this weekend, so I'm going to try and turn them off and see what happens.
yamaholic22
Active member
i usually turn them on between 15 and 20 degrees fahrenheit, never had a problem. If its warm out (like about 35) and the carb heaters are on, the performance will be somewhat sluggish and fuel economy will go in the toilet
Allvipedup
New member
What's a carb heater????...kidding....quit trying with mine, due to the valve is way too hard to turn most of the time..never had any issues. 3500 miles.
THKSNOW
New member
Certified Yam Tech told me to leave them on- period. Won't hurt anything above 32F. 8,500 miles now on my 02 Viper and no issues with this.
yamaholic22
Active member
nobody ever said it would hurt anything mechanically, but i bet if you turn them off on a 35 degree day your mileage will increase and it will run snappier
Hebi
New member
Ive always heard that you are supposed to turn them off when the temps are above 20* F.
Supposedly, if they are left on in warmer temps it causes the sled to be slugglish. Im guessing that the heaters warm the incoming air, so if its 20* it probably warms the incoming air to 40* which makes it run waaaaaay rich.
All in all though, its a good insurance policy. Its kind of funny, some of my friends are big into Polaris and they were bragging about how the new RMKs are so great (the 600 and 800) because they have heated carbs. I was like, "Ummm, Yamaha has had that since the late '90s."
Hebi
Supposedly, if they are left on in warmer temps it causes the sled to be slugglish. Im guessing that the heaters warm the incoming air, so if its 20* it probably warms the incoming air to 40* which makes it run waaaaaay rich.
All in all though, its a good insurance policy. Its kind of funny, some of my friends are big into Polaris and they were bragging about how the new RMKs are so great (the 600 and 800) because they have heated carbs. I was like, "Ummm, Yamaha has had that since the late '90s."
Hebi