S-25
WG972-E2, DF972-E2, WSM
GASOLINE / LPG ENGINE
Spark Test
1. Remove the spark plug, put it inside the high voltage cord cap
firmly, and then ground the threaded section to the engine body
(not to painted or resin parts).
2. Rotate the starter with the key switch and check that the plug
sparks.
CAUTION
• This test is hazardous of electric shocks. Never use hand or
screwdriver to press the plug to ground it to the engine
body.
• Keep inflammable away from the engine.
W1106847
Resistance of Igniton Coil
1. Disconnect the connector.
2. Measure the resistance with an ohmmeter.
3. If the resistance is not with in the factory specifications, replace it.
NOTE
■
• This check sheet shows the results of the test conducted by
using the "FLUKE MULTMETER 110 SERIES" (degital
meter).
• Use of other testers than those above may show different
measured results.
W1107395
Air Gap of Engine Speed Sensor for Electronic Governor
1. Measure the air gap with a feeler gauge.
2. If air gap differs from the factory specification, readust the air gap.
NOTE
■
• The described numerical value is the values of KBT parts.
• Checking sensor as described in the manual of sensor
maker.
• The described valve is the data of supply of kubota.
Follow the instruction of OEM for parts adopted by OEM.
W1019297
Resistance of Engine Speed Sensor for Electronic Governor
1. Measure the resistance with an ohmmeter.
2. If the resistance is not with in the factory specifications, replace it.
NOTE
■
• The described numerical value is the values of KBT parts.
• Checking sensor as described in the manual of sensor
maker.
• This check sheet shows the results of the test conducted by
using the “FLUKE MULTMETER 110 SERIES”.
• The described valve is the data of supply of kubota.
Follow the instruction of OEM for parts adopted by OEM.
W1109303
Resistance
Factory
spec.
A - B
1.87 to 2.53 k
Ω
at 20
°
C
A - C
15.4 to 20.6 k
Ω
at 20
°
C
A : Terminal (+)
B : Terminal (-)
C : Hight Tension Cord
Air gap
Factory spec.
0.8 to 1.2 mm
0.031 to 0.047 in.
Resistance
Factory spec.
Approx. 1.6 f
Ω
KiSC issued 01, 2006 A