Section 06 ELECTRICAL
Sub-Section 06 (TESTING PROCEDURE)
06-06-8
RESISTANCE MEASUREMENTS
As an alternate method, magneto system compo-
nents can be checked with a digital ohmmeter.
NOTE : All resistance measurements must
be performed with parts at room tempera-
ture (approx. 20°C (68°F)). Temperature greatly af-
fects resistance measurements.
Disconnect connector at ignition coil and magneto
junction. Measure resistance between each ter-
minal. Refer to the following table for values and
wire colors.
NOTE : An ignition coil with good resistance
measurement can still be faulty. Voltage leak
can occur at high voltage level which is not detect-
able with an ohmmeter.
∞ : Infinity (extremely large number)
'
'
PART
NAME
WIRE COLOR*
RESISTANCE
OHM
REMARKS
MAGNETO Trigger
coil
BL / YL
with WH / YL
190 - 300
No display change
means open cir-
cuit.
Ignition generator
coil
(All except
599 and 779)
RD
with BK / RD
10 - 17
Ignition
generator
coil
(599 and 779)
engines)
Low
speed WH with RD 49 - 75
High
speed
WH
with BK / RD
2.8 - 4.3
Lighting generator
coil
YL with YL 0.20 - 0.35
IGNITION
COIL
Primary
winding
BK with WH / BL 0.3 - 0.7
Display showing
zero (0) means
short
circuit.
Secondary
winding
(spark plug
cap remove)
End of each high
tension wire
8 - 16 K
(8000 - 16000)
Insulation WH / BL
with core
∞Ω
WH / BL with high
tension wire
SPARK PLUG
CAP
Spark plug
cap
— 4.5 - 5.5 K
*
COLOR CODE
BK — BLACK
WH — WHITE
RD — RED
BL — BLUE
YL — YELLOW
GN—GREEN
GY — GREY
VI — VIOLET
OR — ORANGE
BR — BROWN
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