Repair Instructions; Spark Plug Cap And Spark Plug Removal And Installation; Spark Plug Inspection And Cleaning; Ignition Coil And Plug Cap Inspection - Suzuki kq750 Service Manual

1H-3 Ignition System:
Step
4 Inspect the spark plug. Refer to "Spark Plug Inspection and
Cleaning in Section 0B (Page 0B-9)".
Is the spark plug OK?
5 Inspect the ignition coil. Refer to "Ignition Coil and Plug Cap
Inspection (Page 1H-3)".
Is the ignition coil OK?
6 Measure the CKP sensor peak voltage and its resistance.
Refer to "CKP Sensor Inspection (Page 1H-5)".
NOTE
The CKP sensor peak voltage inspection is
applicable only with the multi-circuit tester and
peak volt adaptor.
Are the peak voltage and resistance OK?
Spark Plug Cap and Spark Plug Removal and
Installation
Removal
WARNING
!
The hot engine can burn you.
Wait until the engine is cool enough to touch.
1) Turn the ignition switch OFF.
2) Remove the right side cover and right inner fender.
Refer to "Front Side Exterior Parts Removal and
Installation in Section 9D (Page 9D-6)".
3) Disconnect the spark plug cap (1).
4) Remove the spark plug with a spark plug wrench.
Special tool
: 09930–10121 (Spark plug wrench set)
1
Action

Repair Instructions

B831G21806001
(A)
I831G1180001-01
Yes
Go to Step 5.
Go to step 6.
• Faulty ECM.
• Open or short circuit
in wire harness.
• Poor connection of
ignition wire harness.
Installation
Install the spark plug in the reverse order of removal.
Pay attention to the following points:
• Screw the spark plug into the cylinder head with
fingers, and then tighten them to the specified torque.
CAUTION
!
Do not cross thread or over tighten the spark
plug, or such an operation will damage the
aluminum threads of the cylinder head.
Special tool
: 09930–10121 (Spark plug wrench set)
Tightening torque
Spark plug: 11 N·m (1.1 kgf-m, 8.0 lb-ft)

Spark Plug Inspection and Cleaning

Refer to "Spark Plug Inspection and Cleaning in Section
0B (Page 0B-9)".

Ignition Coil and Plug Cap Inspection

Refer to "Electrical Components Location in Section 0A
(Page 0A-7)".
Ignition Coil Primary Peak Voltage
1) Remove the right side cover and right inner fender.
Refer to "Front Side Exterior Parts Removal and
Installation in Section 9D (Page 9D-6)".
2) Disconnect the spark plug cap. Refer to "Spark Plug
Cap and Spark Plug Removal and Installation
(Page 1H-3)".
No
Faulty spark plug.
Faulty ignition coil.
• Faulty CKP sensor.
• Metal particles or
foreign material being
stuck on the CKP
sensor and rotor tip.
B831G21806002
B831G21806003