BROMPTON 4-SPEED GEARING
The 4-speed shifter uses a self-returning lever to change between the four gears. Pushing it down with
your thumb will shift into an easier gear and flicking the lever upwards will shift into a harder gear (fig. 4). It
is advised that each individual gear is changed while pedalling for smoother shifting or to avoid damaging
the relating components. The indicator window will give an indication of which gear is selected (fig. 4, 5).
Fig. 5
1
4
INDICATOR WINDOW
M3 SCREWS
SHIFTER
SPACER
BRAKE LEVER
MAINTAINANCE
It is vital that the key functional components like the chain, cassette and derailleur are kept clean and
lubricated. If these components are kept clean their lifespan will be extended and they will function better.
If there is a build up of grease and dirt on the drivetrain, the gearing may not work properly.
LOWER
GEARS
Fig. 6
15
HIGHER
GEARS
FITTING THE SHIFTER
The shifter mounts directly to the left hand brake
lever, it is held in place by two M3 screws.
These should be tightened to 0.6Nm. Do not
overtighten the screws as this can reduce the
performance of the shifter and damage the parts.
As standard a spacer (fig. 6) is fitted between
the shifter and brake lever. This spacer is vital
to ensure clearance between the shift lever and
the grip.
Fig. 4