Yamaha YT175J 1982 Service Manual page 70

CHAPTER 6. ELECTRICAL
IGNITION SYSTEM ...................................................... 6-1
Checking the magneto charge coil and pick up coil ........................ 6-2
Ignition timing ...................................................... 6-2
Spark gap test ....................................................... 6-2
Ignition coil resistance test ............................................ 6-2
Spark plug .......................................................... 6-3
LIGHTING AND SIGNAL SYSTEMS ....................................... 6-3
Lighting tests and checks ............................................. 6-3