2007-2009 Kawasaki KFX50 service manual, Page 75Get this manual
3INSPECTIONADJUSTMENT Turn the adjusting nut, to decrease or increase chain slackRetighten the upper and lower axle holding boltsTorque: 70 Nm (7 kgfm, 50 lbfft)
Adjusting Nut DRIVE CHAIN CLEANING AND LUBRICATION The drive chain is equipped with rubber O-rings between the chain platesSteam cleaning, high-pressure washes, and certain solvents can damage these O-ringsUse only kerosene to clean the drive chainWipe it dry, and thoroughly lubricate it with SAE 3050 motor oilDo not use any other lubricants on the drive chainThey may contain solvents that could damage the O-rings