Yamaha QT50 Service Manual page 57

Valve stopper screw torque:
0 .8 Nm (0.08 m-kg. 0 .6 ft-lb)
5. Reed valve
a. Place the reed valve on a surface plate.
with the reverse side down. and
measure the amount of warpage. If
measured more than the limit. the reed
valve should be replaced.
Couple de serrage de vis de butee
des clapets:
0,8 Nm (0,08 m-kg)
5. Clapet flexible
a. Mettre le clapet flexible sur un marbre, et
mesurer le montant de la deformation. Si
cette deformation depasse la limite, le
clapet flexible doit etre change.
~
0>
1m
I0.03'•1
W/7////~7/h
Surface plate •
Marbrc
Warpage limit: 0 .8 mm (0.03 in)
b. There should be no gap between the
reed valve end and valve seat. when it is
installed.
1. Valve seat
2 Reed valve stopper
3. Reed
valve
Li mite de deformation : 0,8 mm
b. Lorsque le siege de clapet flexible est mis
en place, ii ne doit pas y avoir d'intervalle
entre le clapet flexible et ce siege.
I.
Siege de clape1
2. Butec de clapet nexiblc
3. Clapct Oexiblc