Chainsaw Repair

Actually, unless some unauthorised person destroys the stops or throws it over, it is unlikely you will ever need any part for a swing arm other than grinding wheels. I think the main wheel manufacturer is Pacific Grinding Wheel? The Italian Molemabs are not normally the ones you want. I replaced most of the fasteners and all the washers and springs on my 34 yr old grinder with parts from the hardware store.  I wanted new bearings for my swing arm and had a choice of three different stores in town to get them. SRCarr put new bearings in the motor of his RZII but he got them locally. The fiber washers for under the diamond dresser arms on my grinder were marginal but I got new ones at the hardware store.