Yamaha PW50W 2007 Service Manual page 159

10. Wiring
9 Check the entire ignition system wiring.
Refer to "CIRCUIT DIAGRAM".
9 Is the ignition system wiring properly con-
nected and without defects?
YES
Replace the C.D.I.
unit.
NO
Properly connect
or repair the igni-
tion system wiring.
7-9
IGNITION SYSTEM
ELEC