Recommended service material

| Note required service material is also described in the following. “Fuel pump components” |
Special tool

Specifications
Ignition systemDTC “c28” (p1655): secondary throttle
valve actuator (stva) malfunction
Detected condition and possible cause
Detected condition
Possible cause
The operation voltage does not reach the stva.
Ecm does not receive communication signal from the
stva. Stva can not operate properly or its motor locked
Stva malfunction.
...
Rear sprocket / rear sprocket mounting drum removal and installation
Removal
Remove the rear wheel assembly. Refer to “rear wheel assembly removal
and installation” in section 2d .
Loosen the rear sprocket nuts.
Draw out the rear sprocket mounting drum (1) along
with the rear sprocket (2) from the wheel hub.
Remove the rear sprocket n ...
Gearshift linkage inspection
Refer to “gearshift shaft / gearshift cam plate removal and installation” .
Gearshift shaft
Check the gearshift shaft for bend or wear.
Check the return spring for damage or fatigue.
If any defects are found, replace the defective part(-s).
Gearshift shaft oil seal
Inspect the gearshif ...