Honda NM4 2018 Owner's Manual page 73

Also inspect the drive sprocket and driven
sprocket. If either has worn or damaged teeth,
have the sprocket replaced by your dealer.
Normal Worn
(GOOD) (REPLACE)
NOTICE
Use of a new chain with worn sprockets will cause rapid chain
wear.
#
Cleaning and Lubricating
After inspecting the slack, clean the chain and
sprockets while rotating the rear wheel. Use a
dry cloth with chain cleaner designed
specifically for O-ring chains, or neutral
detergent. Use a soft brush if the chain is dirty.
After cleaning, wipe dry and lubricate with the
recommended lubricant.
Damaged
(REPLACE)
Recommended lubricant:
Maintenance Fundamentals
Pro Honda HP Chain Lube or equivalent
Continued
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