Checking The Engine Stop Lanyard Switch; Checking The Thermo Sensor; Checking The Oil Pressure Switch - Yamaha F25C Service Manual

Lighting coil resistance
(reference data):
Yellow (Y) – Yellow (Y)
0.90–1.10 Ω at 20 °C (68 °F)
Checking the engine stop lanyard
switch
1. Check the engine stop lanyard switch for
continuity. Replace if out of specification.
Switch position
White (W) Black (B)
Clip removed a
Clip installed b
Engine stop button
pushed c

Checking the thermo sensor

1. Place the thermo sensor in a container of
water and slowly heat the water.
6D55F11
Lead color
S69J8250
Electrical components
2. Measure the thermo sensor resistance.
Replace if out of specification.
Thermo sensor resistance:
Brown/black (Br/B) –
Brown/black (Br/B)
at 20 °C (68 °F): 1.13–1.38 kΩ
at 50 °C (122 °F): 324–396 Ω
at 80 °C (176 °F): 113–139 Ω

Checking the oil pressure switch

1. Connect the special service tool to the oil
pressure switch.
2. Slowly operate the special service tool.
3. Check the switch for continuity at the
specified pressure. Replace if there is no
continuity.
Vacuum/pressure pump gauge set:
90890-06756
Specified oil pressure:
15.5 kPa (0.16 kgf/cm
1
2
3
4
5
6
7
8
2
, 2.25 psi)
9
8-10