Honda TRX680FA Service Manual page 517

IGNITION SYSTEM
SERVICE INFORMATION
GENERAL
• Some electrical components may be damaged if terminals or connectors are connected or disconnected while the igni-
tion switch is ON and current is present.
When servicing the ignition system, always follow the steps in the troubleshooting table on page 21-4.
This ignition system is controlled by PCM.
The ignition timing cannot be adjusted since the PCM is factory preset.
The PCM may be damaged if dropped. Also, if the connector is disconnected when current is flowing, the excessive
voltage may damage the PCM. Always turn off the ignition switch before servicing.
A faulty ignition system is often related to poor connections. Check those connections before proceeding.
Make sure the battery is adequately charged. Using the starter motor with a weak battery results in a slower engine
cranking speed as well as no spark at the spark plug.
This vehicle's spark plug is equipped with iridium type electrode. Do not use any spark plug other than specified.
For CKP sensor removal/installation (page 11-9).
For ignition switch servicing (page 23-6).
For engine stop switch inspection (page 23-7).
For gear position switch servicing (page 14-44).
SPECIFICATION
ITEM
Spark plug Standard
For extended high speed
riding
Spark plug gap
Ignition coil peak voltage
CKP sensor peak voltage
Ignition timing ("F" mark)
SPECIFICATIONS
IFR5L11 (NGK)
VK16PRZ11 (DENSO)
IFR6L11 (NGK)
VK20PRZ11 (DENSO)
1.0 - 1.1 mm (0.039 - 0.043 in)
100 V minimum
0.7 V minimum
15°BTDCatidle
TORQUE
Spark plug
Timing hole cap
22 N m (2.2 kgf-m, 16 Ibf-ft)
10 N-m (1.0 kgf-m, 7 Ibf-ft)
TOOLS
IgnitionMate peak voltage tester
MTP07-0286 (U.S.A. only)
Peak voltage adaptor
07HGJ-0020100
(not available in U.S.A.) with com-
mercially available digital
multimeter (impedance 10 Mii/DCV
minimum) or
Imrie diagnostic tester (model 625)
(not available in U.S.A.)
Test probe
07ZAJ-RDJA110
21-3