BSA Winged Wheel W1 Instruction Manual page 15

Starting.
First, tum on the petrol tap by pulling the knob
out. Then if the engine is cold [i.e. if it has not
run for a. few hours, and the temperature has there-
fore fallen to atmospheric level), it will prob'ably be
necessary to close the strangler in order to ensure
an easy start. To do this, press the trigger D,
Fig. 3, inwards with the thumb and, holding it
thus. Open throttle lever A, by moving it in a
clockwise direction to its fullest extent. The
thumb may then be taken from the trigger,
which will remain out of engagement until it is
allowed to ratchet back.
Release thr- clutch by pulling up lever C, to
its fullest extent. in which position the clutch
will be held out hy the ratchet E. Then mount
the bicycle and pedal off in the normal manner.
'When a suitable speed has been obtained, depress
the ratchet and gradually release the clutch lever.
This will couple the engine to the rear wheel and
cause the format to rotate. whereupon it should
immediately commence firing.
As soon as the engine is running smoothly, which
should not take more than a second or so. ease the
throttle lever back inghtiy in order to release the
strangler. The machine can then be ridden nor'
mally as described in the next section.
Driving.
The speed of the engine and therefore oi the
bicycle is controlled by the throttle lever and within
the limits of the performance of the B.S.A. \Vinged
"'heel it gives a uniform range of speed from a
walking pace with the throttle nearly closed right
up to the maximum speed on. the level amounting
to about 25 m.p.h. with corresponding lower speeds
on hills.
l4