Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationValve guide replacement
Remove the cylinder head. Refer to “engine top side disassembly” .
Remove the valves. Refer to “cylinder head disassembly and assembly” .
Using the valve guide remover, drive the valve guide
out toward the intake or exhaust camshaft side.
Special tool
(a): 09916–43211 (valve ...
Special tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Throttle body components” “engine bottom side assembly”
Special tool
...
Specifications
Service data
Drive train
unit: mm (in) except ratio
Tightening torque specifications
Note
the specified tightening torque is described in the following.
“Transmission components” “gearshift lever construction”
“gearshift shaft / gearshift cam plate componen ...