Why does your Yamaha pw50 die when switched to the run position?

Answer 1

The reason your PW50 is cutting out when switched from the start position to the run position is because the contact points on the switch it self are worn down! The quick fix for this problem is to carefully remove the small plastic sliding switch block being careful not to loose the ball or spring! You will have to remove the copper contact plate with a fine flat or flat precision type screw driver and carefully tap on the 3 points on the reverse side of the contact plate again using a precision type screw driver and a small hammer.... It would be a good idea to clean the contact points on the wired contact block with some contact cleaner! Put the switch back together unplug the ignition switch (wire harness) and single black ground wire and test the switch with a multimeter just to make sure that the points are making proper contact! This is how I fix the ignition switches on the Yamaha's and other Japanese bikes with similar ignition switches!