Honda CRF50F Owner's Manual page 114

Drive Chain
Removal, Cleaning & Replacement
LEFT SIDE
(1) master link retaining clip
106
Servicing Your Honda
When the drive chain becomes extremely dirty,
it should be removed and cleaned prior to
lubrication.
1. Remove the master link retaining clip ( )
with pliers. Do not bend or twist the clip.
Remove the master link. Remove the drive
chain.
2. Clean the drive chain with a non-flammable
(high flash point) solvent such as kerosene
not gasoline and allow it to dry.
3. Inspect the drive chain for possible wear or
(1)
damage. Replace the drive chain if it has
damaged rollers, loose fitting links, or
otherwise appears unserviceable.
1