One of the most important, yet most neglected, parts of a motorcycle is the drive chain. Because it is strong and relatively trouble free, many bike owners are not aware that proper maintenance is essential for longer life, maximum performance, safety, and a better ride. In addition, proper care of the drive chain can reduce sprocket were and increase sprocket life.

Sag adjustment- a drive chain that is too tight speeds up wear by excessive pressure on the sprocket teeth, the chain joints, and the shaft bearings. A chain that is too loose will wear quickly and may have a whip action that can cause it to snap. A chain that is too tight or too loose will result in excessive elongation. Normal sag (see diagram) is 3/4". To check for it, press down on the top strand of the drive chain with your fingers. Tighten or loosen to achieve 3/4".

 

Lubrication- motorcycle drive chains are exposed to dust, dirt, grime and other types of corrosive and erosive particles that can reduce their power transmission efficiency by more than 15% and their life to 1/100th of chains that are properly lubricated. In addition, regular lubrication puts a layer of oil between the roller and the bushing to absorb shock load.

 

Sprocket alignment- it is important to check the rear sprockets for wear periodically. If wear occurs on one side of the teeth, it means there is misalignment; a condition, which will result in greatly, reduced chain life. Check the sprocket alignment visually by sighting across them from the rear of the motorcycle or by placing a ruler against them to see if they are in the same plane. Realign or replace as required.

 

 

 

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