When using part 9200 the trigger repair kit it is important to disconnect the electrical and air compressor from your PG II pneumatic glue gun.  Follow the "Handle Disassembly Procedures" located in your PG II owners manual.  Once you have the handle apart lift the trigger assembly off the trigger pin and insert part 9200 then assemble the handle by following the directions in reverse.  We recommend that if you are operating 11-20 3M PG II pneumatic glue guns that you always keep one 9200 trigger repair kit on hand to help reduce down time.