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Engine Number—on top of crankcase below cylinder.
Frame Number—at top of steering head tube.
ENGINE:
Capacity ...
Cylinder bore ...
Stroke
...
Compression ratio
Piston ring gap (minimum) ...
Sparking plug ...
Plug points gap (minimum) ...
TRANSMISSION:
Gear ratios—top
Clutch—friction plates
Chain size and pitch:
(front) ⅜ × .250 in.
(rear) ½ × .335 in. ...
Teeth on—engine sprocket ...
gearbox sprocket ...
clutch sprocket
rear chainwheel ...
CAPACITIES:
Fuel tank ...
Petroil mixture ...
Gearbox ...
WHEELS:
Rim size (front)
(rear) ...
Tyre size (front)
(rear) ...
Tyre pressure
Brake size—diameter ...
wide
TECHNICAL DATA
...
...
...
...
...
...
...
...
...
...
(maximum)
...
...
(maximum)
...
...
second ...
...
first
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
(front)
...
(rear) ...
...
...
...
...
Model D1
Model D3
123 c.c
148 c.c
52 mm.
57 mm.
58 mm.
58 mm.
6.5 : 1
6.4 : 1
.009 in.
.009 in.
.013 in.
.013 in.
L10S (L7)
L10S (L7)
.018 in.
.018 in.
.020 in.
.020 in.
7.0
7.0
11.7
11.7
22.0
22.0
3
3
50
50
117
121
17
17
15
15
38
38
47
47
1¾ gall.
1¾ gall.
See page 18
See page 18
¾ pint
¾ pint
WM1–19
WM1–19
WM1–19
WM1–19
2.275–19
2.75–19
2.75–19
2.75–19
16 p.s.i.
16 p.s.i.
22 p.s.i.
25 p.s.i.
5 in.
5 in.
⅝ in.
⅝ in.
5
Model D5
174 c.c
61.5 mm.
58 mm.
7.4 : 1
.009 in.
.013 in.
L10S (L7)
.018 in.
.020 in.
6.48
10.74
20.2
3
50
121
17
16
38
46
2 gall.
See page 18
¾ pint
WM1–18
WM1–18
3.00–18
3.00–18
16 p.s.i.
24 p.s.i.
5 in.
⅞ in.
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Do you have a question about the D1 125 c.c. Bantam and is the answer not in the manual?
Questions and answers
Should thr float tickler push on top of the float when operated to aid cold start?
Yes. The float tickler on a BSA D1 125 c.c. Bantam pushes down the float in the carburetter float chamber, freeing the needle valve and allowing excess petrol into the carburetter to assist with cold starting.
This answer is automatically generated