Honda CB250 Nighthawk Owner's Manual page 124

Inspection
Refer to Saf ety Precautions
1. Check slack in the lower drive chain
( ) run midway between the sprockets. 1
Drive chain slack should allow the
following vertical movement by hand:
13/16 1 3/16 in (20 30 mm)
2. Check drive chain slack at several
points along the chain. The slack should
remain constant. If it isn't, some links
may be kinked and binding. Lubricating
the chain will often eliminate binding
and kinking.
3. Inspect the drive chain for:
damaged rollers
dry or rusted links
kinked or binding links
on page 54 .
LEFT SIDE
(1)
(1) drive chain
excessive wear
improper adjustment
damaged or missing O-rings
Servicing Your Honda
Drive Chain
115