Yamaha F100B F100C Outboards Factory Service Manual, Page 309Get this manual
Ignition system and ignition control system Checking the pulser coil
1Measure the pulser coil output peak voltageReplace the pulser coil if below specificationrmin DC Pulser coil output peak voltage: Whitered (WR) Black (B) Whiteblack (WB) Black (B) Unloaded Cranking 3.5 2.5 Loaded 1,500 9.0 3,500 14.0
Pulser coil resistance (use as reference): Whitered (WR) Black (B) Whiteblack (WB) Black (B) 445545 at 20 (68 F)
Checking the throttle position sensor
1Start the engine and warm it up minutes to check the stability of the engine2Measure the throttle position sensor input voltageReplace the CDI unit if out of specificationS60C8140