Yamaha RD250 Owner's Manual page 136

Important:
S o m e c o m p o n e n t s are s e a l e d or c a n n o t be d i s -
a s s e m b l e d . If r e p a i r s to s u c h c o m p o n e n t s are
n e c e s s a r y g o to y o u r Y a m a h a d e a l e r . Y a m a h a c a n n o t
be r e s p o n s i b l e for r e p a i r s a n d a d j u s t m e n t s to s u c h
c o m p o n e n t s p e r f o r m e d by n o n - s u t h o r i z e d p e r s o n n e l .
Note:
T h e i n s p e c t i o n a n d m a i n t e n a n c e of A u t o l u b e s h o u l d
be i n t r u s t e d to y o u r d e a l e r .
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