Tuning of the gears (rear
derailleur)
•
If the gears don’t switch smoothly, they need
adjustment.
•
It is recommended to lubricate the chain to insure
optimal performance.
•
The gears can be adjusted in most cases by
turning
the barrel (SIS cable adjuster) (1) by hand anti‐
clockwise in half turns until the gears switch
smoothly
. If that doesn’t help, it may be necessary
to turn it clock wise.
If that doesn’t help please refer to the detailed tuning
instructions below and refer to third part video at
http://www.youtube.com/watch?v=wQncKmddahk
•
shift into small cog
•
turn barrel
(SIS cable adjuster)
all the way in
clockwise
•
adjust high gear screw (H) so that the Tension
Pulley (Figure D2) is straight under the small cog
(barely outward).
•
release wire by turning anchor screw (4) anti‐
clockwise, gently pull wire tight, tighten anchor
screw clock‐wise to secure mechanical wire
•
adjust barrel (anti‐clockwise) until the chain shifts
smoothly from the smallest gear to the second‐
smallest gear
•
Shift into centre cog. Line up pulley using barrel
barely inward of centre cog
•
Shift to large cog. Adjust lower limit screw (L). Align
pulley so that it can’t over‐shift.
•
If it’s still clicking turn lower limit screw out (anti‐
clockwise). Move pulley cogs close to derailleur
with b‐tension screw (pulley adjustment screw).
This adjusts angle of derailleur.
Changing gears correctly
•
Changing gears will allow you to pedal at a comfortable and constant rate.
The external (derailleur) gears consist of different sizes of cogs on the rear
wheel.
•
Operating the gear shifter will move the chain to different cogs. The gear
shifter is located on the right hand side handle bar. Only shift gears while
pedalling forward. Decrease force on the pedals to allow smooth shifting.
•
Do not shift gears when the bike is standing or going over bumps. The chain
could fall off or jam.
The gear shifter has two controls (Figure G1):
•
push the “plus button” to shift into a high gear (small cogs).
•
Push and hold the LEVER for a moment to shift into a low gear (large cogs).
•
Shifting to large rear cogs makes it easier to pedal and are recommended for
example if you go uphill.
•
Small rear cogs make it harder to pedal and can be used on the flat to allow
to pedal comfortably when riding at higher speeds.
•
Locate the gear clamp bolt which attaches gear shifter to handle‐bar and
tighten to 7Nm.
•
The motor operates independently and is not affected by gear changes.
Gear lever
Gear “+” button
1
2
3
4
Figure D1:
1 Barrel (SIS Cable adjuster), 2 High gear
adjustment screw (H), 3 Low gear adjustment screw (L), 4
Cable anchor screw (Tighten to 7Nm)
16
Figure G1:
Parts of gear shifter
Figure D2:
Rear Derailleur Rear View.
© Leitner Pty Ltd 2019
Summary of Contents for Berlin 2020
Page 25: ...25 Leitner Pty Ltd 2019 ...
