the weights are in your primary clutch
Purchase a clutch rebuild kit, and a clutch puller tool.
To install a snowmobile drive belt, first ensure the snowmobile is turned off and on a flat surface. Remove the side panels to access the clutch, then release the tension by opening the primary clutch and sliding the old belt off. Position the new belt around the primary clutch and carefully align it with the secondary clutch, ensuring it fits snugly. Finally, reassemble any removed panels and check the belt alignment before operating the snowmobile.
You do not lubricate a clutch - You clean it. If you lubricate it will slip and it will collect dust and dirt from the belt and it will bung it up..
To set the clutch on a Polaris snowmobile make sure you have cleaned the entire clutch assembly and adjust all the bolts to the proper setting. With both of those things done make sure you have properly lubed and set the belt to the right tension.
You do not "lube" a centrifugal clutch. http://www.snowmobileforum.com/engine-drivetrain/26360-generic-clutch-cleaning-advise.html
you need a special puller $30
To measure bore taper
Yes, cutting the clutch spring shorter on an Arctic Cat snowmobile can lower the clutch engagement RPM. A shorter spring will have less preload, allowing the clutch to engage at a lower RPM. However, this modification can also affect performance and may lead to premature wear or other unintended consequences, so it's essential to consider the overall impact on your snowmobile's tuning. Always consult a professional or refer to manufacturer specifications before making such adjustments.
it is usually located in front of the engine, right next to the clutch. it looks like a a soda can with a sprocket on it
Look under the exhaust pipes on the clutch side of the engine.
To calculate shaft taper, measure the diameter at two points along the length of the shaft. Subtract the smaller diameter from the larger diameter to find the taper amount. Then, divide this difference by the length of the taper section to determine the taper per unit length. This result is often expressed as a ratio or in degrees, depending on the application.