Tuners are often confused when it comes to being able to identify whether a particular adjusting screw on a carb is a fuel screw (that adjusts low speed fuel delivery) or an air screw (that adjusts low speed air delivery). Carb accessory guru Lonn Peterson at Thunder Products tells... Read more
We have just received a note from Arctic Cat regarding the 2006 M7 models within a VIN range of 4UF06SNW96T111797 – 4UF06SNW06T112997 and the 2006 Crossfire models within the VIN range of 4UF06SNW46T113280 – 4UF06SNW26T115934. According to Arctic Cat, “Due to the unforeseen circumstances, Gas Tank Neck Extension (p/n... Read more
With real estate becoming a precious commodity under the hoods of many new sleds, finding a place to carry a spare drive belt is becoming challenging. Nobody in their right mind would leave home without a spare drive belt! A couple of things to remember when mounting a spare... Read more
Our friends at Black Magic Racing reminded us to remind you to go out and start up your sled, like right now. Seriously. Where is your sled and how did you put it away at the end of the season? Did you take the gas out of the carbs?... Read more
What is considered “normal” oil consumption for a 1000cc Yamaha RX 4-stroke engine? Anything up to one quart per 1,000 miles, according to Yamaha. With a high-revving high performance engine like this it will use some oil under normal operating conditions. Anything over one quart per 1,000 miles is... Read more
All 2005 Ski-Doo Summit Highmark 1000 SDIs should have the pulse fitting on the crankcase replaced (by your Ski-Doo dealer) to eliminate fuel starvation and bogging. In addition to the pulse fitting, the ECM will be reprogrammed, the fuel pump will be cleaned and the throttle position sensor (TPS)... Read more
The fuel injectors used on the 2005 Polaris Liberty twin 900s are color coded, much like Arctic Cat’s injectors were coded with a symbol (diamond, square, triangle). This is for the purpose of matching the injector flow rates to the machine electronics. And the coding should be followed when... Read more
Quick answer this; do you know right off hand what the torque spec is for your handlebars? Normally it’s going to be quite low, something like 10-20 ft-lb (120-240 in-lb). Point is, you should be aware of the exact spec when adjusting handlebar positioning. Another thing to be checking... Read more
When plastic has been asked to stretch or bend in a direction it doesn’t want to there will often remain white “stress” marks. For example, on a belly pan. Many times, these white marks can be greatly minimized and almost eliminated by carefully warming the area with something like... Read more
Owners of Polaris models fitted with plastic airbox fittings (that the carb vent lines are attached to) want to verify these fittings are not broken. If they are broken or cracked, the carb vent lines and float bowls will not “see” the proper airbox pressure, resulting in a rich... Read more