Bosch FLYER Mountain, Translation Of The Original Instruction Manual

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199
EN
14. Bicycle chain
and sprocket
Bicycle chain maintenance
Bike chains become worn with use. The degree of
wear varies considerably. Have the chain of your
FLYER regularly checked by your FLYER spe -
cialist retailer.
• Hub gears: approx. 3000 km
• Chain gears: 1500-2000 km
A worn bike chain can break and cause
very serious falls. Worn bicycle chains
must therefore immediately be changed
by your FLYER specialist retailer.
Regularly care for your bicycle chain by cleaning
and greasing it. These measures reduce prema -
ture wear.
To ensure that the chain and gears can
work safely, the chain must have a cer -
tain level of tension. Chain gear systems
tense the chain automatically. In the
case of hub gears, chains which are too
loose must be tightened. It might other -
wise jump off the gears and lead to a fall.
1
10-15 mm
2
3
The axle nuts and the brake anchor
plate of back pedal brakes must be cor -
rectly fastened after each chain adjust -
ment process.
The chain may only be tightened once
the electrical system has been switched
off and the battery has been removed. If
the chain of your FLYER e-bike has fall -
en off the chain ring or sprocket, it is es -
sential to switch off the electrical system
and remove the battery before placing
the chain back on the gear wheels.