Yamaha YW50P Service Manual page 202

AUTO O.O.E SYSTEM IE'Ecl I
" y ' p . . . . .
TROUBLESHOOTING
IF THE A U T O CHOKE FAILS TO OPERATE.
Procedure
Check:
1. Lighting coil resistance
2. Auto choke unit resistance
3. Wiring connection (entire auto choke system)
NOTE:
• Remove the following parts before troubleshooting.
1. Battery box cover
2. Rear carrier
3. Tail cover
4. Right side cover
• Use the special tools specified in the troubleshooting section.
~ 1 P°cket tester: I
YU-03112
1. Lighting coil resistance
• Disconnectthe CDI magneto couple from
wire harness.
• Connect the pocket tester (E2 x l ) to the
lighting coil coupler
Tester (+) Lead->Yellow/Red (~ terminal
Tester (-) Lead--~Frame earth
(~ C.D.I. magneto
w
Y/R
$
• Checkthe lighting coil for specificated re-
sistance
Lighting coil resistance
0.4~0.6 ~ 20°C (68°F)
MEETS
SPECIFICATION
OUT OF SPECIFICATION
I Replace the lighting coil
7-43