Carburetor Setting - Yamaha RD250 Manual

MODIFICATION
b.
Carburetor setting
RD25O
,77
MODEL
,78
MODEL
MODEL
VM28SS
<-
I,D.
No.
1
5200
2
R800
MJ # 115
<_
AJ
1.0
0.8
JN 5L3-2
5L1-4
NJ o-8
o-6
CA
2.5
2.O
AS
1%
<_
GS
#70
<-
NOTE:
The above specification may
be changed
without
prior
notice.
RD4OO
'77 MODEL
,78
MODEL
MODEL
VM28SS
<-
l.D.
No.
14300
2R900
IVIJ
#
120
#
145
AJ 0.5
<-
JN 5L1-3
5J6-3
NJ
P-2
o-8
CA 2.5
<-
PJ
25
<-
AS
1%
<_
GS
#70
<_
NOTE
:
The above specifications may
be
changed
without
prior
notice.
For
better
engine performance the
shape of
transfer
port
and inlet
port timing
have
been
changed.
RD25O
REMARKS
Easy engine setting
t
t
Qr
|r)r
N
Or
tt
\-
+'
@
lnlet port
@
E"harst
port
@
Scauenging
ports
-
(Transfer)
PORT TIMING
(MM}
,77
MODEL
,78
MODEL
A 29.5
<-
B
62.5
665