Honda SH300I 2006, Manual

Page: 433 / 511

IGNITION SYSTEM
20-3
SERVICE INFORMATION
GENERAL
• Some electrical components may be damaged if terminals or connectors are connected or disconnected while the igni-
tion switch is turned to ON and current is present.
• When servicing the ignition system, always follow the steps in the troubleshooting sequence on page 20-4.
• This scooter’s Ignition Control Module (ICM) is built into the Engine Control Module (ECM).
• The ignition timing cannot be adjusted since the ECM is factory preset.
• The ECM may be damaged if dropped. Also, if the connector is disconnected when current is flowing, the excessive
voltage may damage the ECM. Always turn the ignition switch to OFF 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.
• Use a spark plug of the correct heat range. Using a spark plug with an incorrect heat range can damage the engine.
• For ignition switch servicing (page 22-16).
• For CKP sensor removal/installation (page 13-8).
SPECIFICATIONS
TORQUE VALUE
TOOLS
ITEM SPECIFICATIONS
Spark plug LMAR8A-9 (NGK)
Spark plug gap 0.8 – 0.9 mm (0.03 – 0.04 in)
Ignition coil primary peak voltage 100 V minimum
Crankshaft position (CKP) sensor peak voltage 0.7 V minimum
Ignition timing ("F" mark) 10
°
BTDC at idle
Timing hole cap 6 N·m (0.6 kgf·m, 4.4 lbf·ft) Apply engine oil to the threads and seating
surface
Imrie diagnostic tester (model 625)
Peak voltage adaptor
07HGJ-0020100
with commercially available digital
multimeter (impedance 10 M
Ω
/DCV
minimum)
Test probe
07ZAJ-RDJA110