Ignition Timing - Honda CBR125R Owner's Manual

Turn the ignition switch OFF.
Disconnect the alternator/CKP sensor 6P (Natural)
connector and connect the tester probes to the con-
nector terminals of the CKP sensor side.
CONNECTION: Blue/yellow (+) – White/yellow (–)
In the same manner as at the ECM 33P connector,
measure the peak voltage and compare it to the
voltage measured at the ECM 33P connector.
• If the peak voltage measured at the ECM is
abnormal and the one measured at the CKP sen-
sor is normal, the wire harness has an open or
short circuit or loose connection.
• If the peak voltage of the CKP sensor side is
lower than standard value, follow the checks
described in the troubleshooting table (page 17-
4).
For CKP sensor replacement (page 11-6).
Install the removed parts in the reverse order of
removal.

IGNITION TIMING

Warm up the engine.
Stop the engine and remove the timing hole cap
using a special tool.
TOOL:
Timing cap wrench
Connect the timing light to the spark plug wire.
Read the
instructions for
Start the engine and let it idle.
timing light
IDLE SPEED: 1,450 ± 100 min
operation.
The ignition timing is correct if the "F" mark on the
flywheel aligns with the index notch on the left
crankcase cover.
6P (NATURAL) CONNECTOR
TIMING HOLE CAP
07709-0010001 or
equivalent
TIMING LIGHT
-1
(rpm)
IGNITION SYSTEM
INDEX NOTCH
"F" MARK
17-7