Valve Clearance Adjustment - TGB BLADE 425 Service Manual

6. CYLINDER HEAD/VALVE
Install and tighten spark plug
Torque value: 1.0~2.0kgf-m
Caution
This model is equipped with more precision
4-valve mechanism so its tighten torque can not
be exceeded standard value in order to avoid
causing cylinder head deformation, engine noise
and leaking so that motorcycle's performance be
effected.
Install the engine onto frame (refer chapter 5).

Valve Clearance Adjustment

Remove cylinder head cover.(3 bolts)
Align the line Ⓐ on the generator rotor
with the index mark Ⓑ on the
crankcase.
Loosen valve clearance adjustment nuts and bolts
located on valve rocker arm.
Measure and adjust valve clearance with feeler
gauge.
After valve clearance had been adjusted to
standard value, hold adjustment bolt and then
tighten the Adjustment nut.
IN 0.10 ± 0.02 mm
Standard Value:
EX 0.15 ± 0.02 mm
Start the engine and make sure that engine oil
flows onto the cylinder head.
Stop the engine after confirmed, and then install
the cylinder head cover .
Caution
● If lubricant does not flow to cylinder head,
engine components will be worn out seriously.
Thus, it must be confirmed.
● When checking lubricant flowing condition, run
the engine in idle speed. Do not accelerate
engine speed.
6-16
To this chapter contents
Spark plug
B
A
Timing mark