Kalkhoff Pedelec Impulse, Original User Manual

Page: 34 / 230

I General User Manual 33
Operating the front derailleur lever with trimming
(noise prevention), optional
Gear shifting operations
Lever a : Shift to a larger chainring
Lever
a
Starting position
of lever
a
Gear shift com-
plete stroke
Actual pull
If the lever movement does not effect a full changeover of chainring,
press the lever repeatedly by the amount (X') to move the lever the
remaining distance (X) and change gears.
Lever b : Shift from intermediate chainring to smallest
chainring
Lever
b
Starting position
of lever
b
Gear shift complete
stroke
Click-in position
Click-in position
When lever b is operated, there is one click where trimming (the
noise prevention mechanism) enagages, and a second stronger click
when the gear shift stroke is completed. After trimming, the next
push will complete the gear shift stroke.
Trimming (noise prevention)
Depending on the position of the chain after shifting, it
may rub against the outer chain guide plate or inner chain
guide plate of the front derailleur and produce noise. In
this case, lightly press lever
a or lever b to move the front
derailleur until it is no longer in contact with the chain.
This procedure is known as "trimming". Trimming is pos-
sible if the chain is on the large, intermediate or small
chainring.
If you perform the trimming operation at one of the fol-
lowing positions, the noises will disappear completely.