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 inspectionCooling fan relay inspection
Inspect the fan relay in the following procedures:
remove the frame covers. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Remove the cooling fan relay (1).
First check the insulation between “a” and “b”
terminals with tester. Then ap ...
Gearshift shaft oil seal / bearing removal and installation
Removal
Remove the gearshift shaft. Refer to “gearshift shaft / gearshift cam
plate removal and installation” .
Remove the gearshift shaft oil seal (1).
Remove the bearings (2) and (3) with the special
tools.
Special tool
(a): 09921–20210 (bearing remover
(12
mm))
...
Engine bottom side assembly
Assemble the engine bottom side in the reverse order of
disassembly. Pay attention to the following points:
Note
apply engine oil to each running and sliding
part before reassembling.
Breather oil return plate
When installing the breather oil return plate (1), apply
thread loc ...