Category: Service & Tuning Notes

The new three-cylinder RS 4-strokes from Yamaha are fitted with a comprehensive self-diagnostic system that will, upon detection of an electrical problem, display a code

The new type “995” engine, or more commonly known as the Rotax 1000 SDI, may use two different piston sizes. Each cylinder and pistons is

All of the Yamaha four-strokes, three and four cylinder up through 2005, have a heavy rubber flap that covers the engine. Many riders have found

Old school tuners are sometimes thrown a curve ball when a sled with a newer ignition system is causing the performance to be reduced. Often

So your tail light doesn’t work and you’ve already checked the bulb; it’s O.K. Now what? Plan on removing the seat and doing some detective

If you’re working on a carbed Ski-Doo and are experiencing fuel flow issues, do not forget about the little fuel filters right in the inlet

So when old gas gums up the carbs on your sled, what jets are most often affected? Usually it is the pilot jets; the sled

One thing we continue to experience each year with many sleds, particularly the Ski-Doo REV models, is where the machine will begin to run erratically,

Black Magic Racing did some looking into the ‘04 and ‘05 Arctic Cat 660 ST models and found that these sleds are not immune to

Maybe you own a 2005 Polaris 900, or maybe you’re considering buying a carryover at a great price. Either way, Polaris has made many detail