YES. and yes I am yelling. dont let ayone tell you different. swag (scientific wild arse guess) will not cut it. Get a torque wrench, and find the torque specifications (in a clymer manual, if you dont have one get one)
OK thanks, and yes i have the clymer manual and i know it says to get one, i just wanted to make sure. The only problem is that i cant get a wrench (besides the needle nose vicegrips) in between the topend and the botttom end bolts.
3/8 will do most of your blaster work, you can always put an adapter on.
the size you should be concerned about is not the drive size its the range of torque. the larger range the better. and it depends on what specs your going to be torquing too.
Ive got 3 different torque wrenches myself with different ranges. (it ends up being what you need in the long run) I luv tools.
and in the directions it will show you how to recalculate to the proper torque.
or another option would be to get a crows foot wrench (Im not sure it will work though, and then you wont have the nifty conversion chart that motion pro gives)
any atv/motorcycle dealer will have this tool in stock too.