Removal
The hot
engine can burn you. Wait until the engine is cool enough to touch. |

| Caution disconnect the lead wire coupler before removing the ignition coil to avoid lead wire coupler damage. |
Caution
|

Special tool
(a): 09930–10121 (spark plug wrench
set)

Installation
Install the spark plugs in the reverse order of removal.
Pay attention to the following points:
| 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
(a): 09930–10121 (spark plug wrench
set)
Tightening torque spark plug: 11 n·m (1.1 Kgf-m, 8.0 Lbf-ft)

| Caution do not hit the ignition coil with a plastic hammer when installing it. |


Spark plug inspection and cleaning
Refer to “spark plug inspection and cleaning” in section 0b .
Ignition coil inspectionHazard switch inspection
Inspect the hazard switch in the following procedures:
remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Disconnect the left handlebar switch coupler (1).
(Yellow)
Inspect the hazard switch for continuity with the
tes ...
Camshaft inspection
Refer to “engine top side disassembly” .
Refer to “engine top side assembly” .
Camshaft identification
The exhaust camshaft has the embossed letters “ex”
and the intake camshaft has the embossed letters “in”.
Cam wear
Check the camshaft for wear or damage.
Measure the cam height “a” w ...
Damping force adjustment
The rebound and compression
damping force can be individually
adjusted by turning the respective
adjusters. The rebound damping
force adjuster 2 is located at the
top of the front fork. The compression
damping force adjuster 3 is
located at the bottom of the front
fork.
To adjust the da ...