Chainsaw Repair

Thanks for your replies, guys, I was thinking of connecting a battery across the plug terminals, then using a multimeter on the connectors to the brushes, holding the power switch on, and seeing if the current is getting through. If there is no current (presumably there won't be), do I need to do more dismantling? The worst I can do is find out that I can't put it all back together again. I was thinking that I would have to take out the motor to see if there is a capacitor wired into it. I read on other forums that the windings might be gone, but the chainsaw was working fine five years ago when I finished the job I was using it for.