Honda TRAIL 125 2022 Owner's Manual page 55

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Cleaning and Lubricating
After inspecting the slack, clean the chain and
sprockets while rotating the rear wheel. Use a
dry cloth with high flash-point solvent. Use a
soft brush if the chain is dirty.
After cleaning, wipe dry and lubricate with the
recommended lubricant.
Recommended lubricant:
Pro Honda HP Chain Lube or equivalent
Never use gasoline or low flash point solvents
for cleaning the drive chain.
A fire or explosion could result.
Maintenance Fundamentals
Avoid getting lubricant on the brakes or tires.
Avoid applying excess chain lubricant to prevent
spray onto your clothes and the vehicle.
Crankcase Breather
Service more frequently when riding in rain, at
full throttle, or after the vehicle is washed or
overturned. Service if the deposit level can be
seen in the transparent section of the drain
tube.
If the drain tube overflows, the air filter may
become contaminated with engine oil, causing
poor engine performance.
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