Probably bez it worn or and chain tensioner giving problem
Oil should b changed every 5000km not 10-12-15 k chain need good lubrication
Tensioner n guides
Worn out’
Rotate cam shafts
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Probably bez it worn or and chain tensioner giving problem
Oil should b changed every 5000km not 10-12-15 k chain need good lubrication
Tensioner n guides
Worn out’
Rotate cam shafts