Kubota WG1605-G-E3 Workshop Manual page 98

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM
Spark Plug Gap
1. Remove the spark plug, and remove carbon from the electrode
with a wire brush or other tools.
2. Measure the spark plug gap with a feeler gauge, and repair or
replace the plug if the measured gap differs from the factory
specification.
3. Replace the plug if the electrode or the insulator is deformed or
cracked.
4. Tighten the plug with a plug wrench.
IMPORTANT
(When reassembling)
• Put the ignition coil inside the spark plug terminal firmly.
• Make sure that the wiring and the ignition coil are correctly
connected.
• Fix the ignition coil by screw / nut.
Spark plug gap Factory specification
Spark plug
Spark plug
Tightening torque
Ignition coil mounting screw
/ nut
Resistance of Ignition Coil
1. Disconnect the ignition coil.
2. Measure the resistance with an ohmmeter.
3. If the resistance is not with in the factory specifications, replace
it.
Factory
Resistance specifica-
tion
1-S20
0.70 to 0.80 mm
0.028 to 0.031 in
NGK: IFR6F8DN
24.5 to 29.4 N·m
2.50 to 2.99 kgf·m
18.1 to 21.6 lbf·ft
9.81 to 11.3 N·m
1.00 to 1.15 kgf·m
7.24 to 8.33 lbf·ft
9Y1210661ENS0089US0
0.63 to 0.77 Ω
a – b
at 25 °C (77 °F)
7.29 to 8.91 kΩ
a – c
at 25 °C (77 °F)
9Y1210661ENS0079US0
ENGINE
KiSC issued 01, 2012 A