Maintenance
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8.1.2.5 Cleaning the drive elements
 Spray the cassette, the chain wheels and the front 
derailleur with a degreasing agent.
 Clean coarse dirt with a brush after soaking for a 
short time.
 Wash down all parts with dish-washing detergent 
and a toothbrush.
 Service the drive elements after cleaning.
8.1.2.6 Cleaning the chain
NOTICE
 Slightly dampen a brush with dish-washing liquid. 
Brush both sides of the chain.
 Dampen a cloth with dish-washing liquid. Place the 
cloth on the chain.
 Hold with slight pressure while slowly turning the 
rear wheel, so the chain passes through the cloth.
 If the chain is still dirty afterwards, clean it with 
WD40.
 Service the chain after cleaning.
 Never use aggressive (acid-based) cleaners, rust 
removers or degreasers when cleaning the chain.
 Do not use chain cleaning devices or chain cleaning 
baths.
EN_034-11592_1.0_0.01_19.08.2018_HERCULES BOSCH Purion MY19_Inhalt.book  Seite 132  Montag, 19. November 2018  11:00 11