COPY
‑ 3 ‑
Sep./08/ 09
○
Valve timing adjustment and tappet
clearance adjustment.
◇
Give the crankshaft two clockwise turns.
And check that all the alignment marks are
meshing with one another, with the “T” mark on
the flywheel, the notch on the crankcase and
the timing sprocket mark facing the front.
◇
Holding the flywheel, tighten up two cam
sprocket bolts.
Tightening torque
: 9 N
･
m (0.9 kgf
･
m)
◇
Install the just-removed bolt next to the change
pedal shaft, and tighten it up.
Tightening torque : 10 N
･
m (1.0 kgf
･
m)
◇
While tightening a rocker arm’s tappet adjusting
screw, tighten the tappet adjusting nut to the
extent that you can pull out a thickness gauge,
placed between the tappet adjusting screw and
the valve stem end, feeling only a little resistance.
IN: 0.10 mm
EX: 0.12 mm
Fit together the crankcases with a 14mm box
wrench and medium-sized long joint.
◇
After adjusting the tappet, give the flywheel two
turns counterclockwise by hand, and then, align
the “T” with “O” marks.
◇
Check if there is any change in the tappet
clearance. If the clearance has not changed, there
is no need to readjust it. However, in case there is
a change, readjust the clearance.
Repeat this readjustment until you get a right
tappet clearance.
Valve clearance
(Exhaust side)
Valve clearance
(Intake side)
Adjusting screw
Thickness
gauge
Valve stem
3-5-16 Nishikiorihigashi Tondabayashi Osaka Japan
TEL : 81-721-25-1357
FAX : 81-721-24-5059
URL : http://www.takegawa.co.jp
Co.,Ltd.
Timing
mark
Notch
T mark
