Yamaha JT1 Series Service Manual page 81

MOTORCYCLE
SERVICE NEWS
1969 thru 1972 Models
YAMAHA INTERNATIONAL CORPORATION
BUENA PARK, CALIFORNIA 90620
DATE 12/10/71
AUTOLUBE OUTPUT & COLOR CODE (cont'd.)
C. WHAT IF OUTPUT JS CORRECT, AND PROBLEM CONTINUES?
Troubleshooting is a process of considering all possibilities, and eliminating them
until the problem(s) is found. Such items and systems to be checked include type
of oil, rider habits, timing, piston clearance, and compression (not particularly
in this order, nor only those items listed).
1969 thru 1971 Models
NUMBER
258A
PAGE
2 of 3
MINIMUM STROKE; MAXIMUM STROKE; PUMP
**REDUCTION
cc @ 200 STROKES* cc @ 200 STROKES*
COLOR CODE
RATIOS
)Tl • 50
-
.63
4.65
-
5.15 White 30/19
X
62/1
GSS . 50
-
. 63
4. 65 - 5.15 Light Blue 28/19
X
55/1
G6S
. so
-
. 63 4.65
-
5.15
Light Blue
28/19
X
55/1
G6SB . 50
-
. 63 4. 65 - 5.15
Light Blue
28/19
X
55/1
HTl
.50
-
. 63
4.65
-
5.15 Red
28/19
X
55/1
HTlB
. so
-
. 63
4.65
-
5.15 Red 28/19
X
55/1
HSl
. so
-
. 63 4.20 - 4. 80 Blue 34/19
X
62/1
HSlB
. so -
. 63 4. 20 - 4. 80
Blue
34/19
X
62/1
YLl (E)
. so
-
.63
4.20 - 4. 80 Yellow 34/19
X
62/1
LST . 50
-
.63
4.65 - 5.15
Green
34/19
X
36/1
LSTA . 50
-
. 63 4. 65 - 5.15 Green
34/19
X
36/1
ATl .95 - 1.19 8.80
-
9.76
Yellow 28/19
X
55/1
ATlB (MX) .95 - 1.19 8.80
-
9.76 Yellow 28/19
X
55/1
ATlC .95
- 1.19 8.
so -
9. 76 Yellow 28/19
X
55/1
AS2C
. so
-
. 63 4.17 - 4. 80 Vvhite 34/19
X
55/1
CTl .95 - 1.19 8.80
-
9.76 Yellow 28/19
X
55/1
CTlB .95 - 1.19 8.80
-
9.76 Yellow
28/19
X
55/1
CTlC
.95 - 1.19
8.80
-
9. 76 Yellow 28/19
X
55/1
CSlC
.50
-
. 63
5.15 - 5.70 Dark Blue 20/16
X
55/1
CS3B
. 50
-
. 63
5.15 - 5.70 Dark Blue 20/16
X
55/1
CS3C . 50
-
. 63 5.15
-
5.70
Dark Blue
20/16
X
55/1
DTlB .95 - 1.19 8.80
-
9. 76 Black 20/21
X
55/1
DTlC
.95
- 1.19 8. 80 - 9. 76 Black 20/21
X
55/1
DTlE
.95 - 1.19
8. 80
-
9.76 Black 20/21
X
55/1
DS6B . 50
-
. 63 5.15
-
5.70
Pink
20/20
X
40/1
DS6C
.so
-
.63 5.15
-
5.70
Pink
20/20
X
40/1
R2/R2C . 50
-
.63 5.15 - 5.70 Green 19/23
X
32/1
R3
.so
-
. 63
5.15 - 5.70 Green 19/23
X
32/1
RS
. so
-
. 63
5.15
-
5.70 Red 21/23
X
32/1
RSB . 50
-
. 63 5.15 - 5.70
Red
21/23
X
32/1
RTl (Old) 1.19 - 1.44
9.10 -10.
os
Green 20/21
X
55/1
RTl (New)
.95
- 1.19 8. 80
-
9.70 Green 20/21
X
55/1
RTlB
. 95 - 1.19
8. 80
-
9.70 Green 20/21
X
55/1
- 75 -