Yamaha F150A Service Manual

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1-7Electrical technical dataElectrical technical dataIgnition timing control systemSpark plugGap 1.0–1.1 mm (0.039–0.043 in)Spark plug wireResistance (#1) 4.6–10.9 kΩ at 20 °C (68 °F)Resistance (#2) 3.3–8.0 kΩ at 20 °C (68 °F)Resistance (#3) 3.8–9.3 kΩ at 20 °C (68 °F)Resistance (#4) 4.2–10.0 kΩ at 20 °C (68 °F)Ignition coilInput voltage 12 VOutput peak voltage (reference data) 210.0 V at cranking (loaded)260.0 V at 1500 r/min (loaded)270.0 V at 3500 r/min (loaded)Primary coil resistance 1.530–2.070 Ω at 20 °C (68 °F)Secondary coil resistance 12.50–16.91 kΩ at 20 °C (68 °F)Pulser coilOutput peak voltage (reference data) 3.5 V at cranking (unloaded)3.0 V at cranking (loaded)21.0 V at 1500 r/min (loaded)39.0 V at 3500 r/min (loaded)Resistance 459.0–561.0 Ω at 20 °C (68 °F)Air temperature sensorInput voltage 4.75–5.25 VResistance (reference data) 2.2–2.7 kΩ at 20 °C (68 °F)0.32 kΩ at 80 °C (176 °F)Air pressure sensorInput voltage 4.75–5.25 VOutput voltage 3.21 V at –20.0 kPa (–0.20 kgf/cm 2, –2.9 psi)2.16 V at –46.7 kPa (–0.467 kgf/cm 2, –6.8 psi)Engine temperature sensorInput voltage 4.75–5.25 VResistance (reference data) 128.0 kΩ at 5 °C (41 °F)54.20–69.00 kΩ at 20 °C (68 °F)3.120–3.480 kΩ at 100 °C (212 °F)ThermoswitchInput voltage (reference data) 11.5 VSwitch ON temperature 84–90 °C (183–194 °F)Switch OFF temperature 68–82 °C (154–180 °F)Shift cut-off switchInput voltage 4.75–5.25 VFree position resistance (reference data) 4.465–4.935 kΩ at 20 °C (68 °F)