Yamaha YFM350XP Supplementary Service Manual page 24

Connect the pocket tester (Ω × 1k) to the
●
ignition coil.
Tester (+) lead → Orange lead terminal
Tester (–) lead → Spark plug lead
Check that the secondary coil has the
●
specified resistance.
Secondary coil resistance:
6.32 ~ 9.48 kΩ at 20 °C (68 °F)
7.Engine stop switch
Refer to "CHECKING THE SWITCH".
8.Main switch
Refer to "CHECKING THE SWITCH".
9.Pickup coil resistance
Disconnect the AC magneto coupler from
●
the wire harness.
Connect the pocket tester (Ω × 100) to the
●
pickup coil terminal.
Tester (+) lead → White/Red terminal 1
Tester (–) lead → White/Green terminal 2
Check the pickup coil for the specified
●
resistance.
Pickup coil resistance:
459 ~ 561 Ω at 20 °C (68 °F)
(White/Red – White/Green)
*
BOTH MEET
SPECIFICATION
CORRECT
CORRECT
MEETS
SPECIFICATION
– 18 –
IGNITION SYSTEM
Replace the ignition coil.
INCORRECT
Replace the handlebar switch (left).
INCORRECT
Replace the main switch.
OUT OF SPECIFICATION
Replace the pickup coil/starter assembly.
– +
ELEC