I'm in a no spark situation on a recently purchased Force engine. I can't find the serial number only a range of numbers from the web. I could use help there and the flywheel has a sticker on saying "2 CYL ONLY" but all 6 magnets seem powerful. Does the trigger decide which magnet to get the spark from? Why the sticker? A manual and/or wiring diagram would be useful also. I'm quite green at this. I have 2 unmounted triggers and don't know where to mount one or plug it into.