Honda CBR 250R Manual page 63

DRIVE CHAIN
• Damaged Rollers
• Loose pins
• Dry or Rusted Links
• Kinked or Binding Links
• Excessive Wear
• Improper Adjustment
• Damaged or Missing O-ring
SPROCKETS
• Excessively Worn Teeth
• Broken or Damaged Teeth
A drive chain with damaged rollers, loose pins
or missing O-rings must be replaced. The
rusting, requires supplementary lubrication.
Kinked or binding links should be thoroughly
lubricated and worked free. If links cannot be
freed, the chain must be replaced.
Damaged sprocket
Teeth
Replace
Normal sprocket Teeth
GOOD
Honda Motorcycle & Scooter India Pvt. Ltd.
Adjustment:
Drive chain slack should be checked and
adjusted, if
(600 miles). When operated at sustained
high speeds or under conditions of frequent
rapid acceleration, the chain may require
more frequent adjustment.
If the drive chain requires adjustment, the
procedure is as follows:
1. Place the vehicle on its side stand
2. Loosen the "Rear Axle Nut" (1).
3. Loosen the "Drive Chain Lock Nuts" (2) on
4. Turn both "Drive Chain Adjusting Nuts"(3)
Worn sprocket
Teeth
Replace
necessary, every 1,000 km
with the transmission in neutral and the
ignition switch OFF.
the both sides of swingarm.
an equal number of turns until the correct
drive chain slack is obtained. Turn the
drive chain adjusting nuts clockwise to
tighten the chain, or counterclockwise
to provide more slack. Adjust the chain
slack at a point midway between the drive
sprocket and the rear wheel sprocket.
Roll the vehicle forward. Stop and place
it on its side stand. Recheck chain slack.
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CBR 250R