Polaris 120 Dragon - Manual (Page 63)

59
ADULT SECTION
Maintenance
Chain Tensioner
Inspect the chain. Proper deflection is one inch (25 mm). Adjust the
chain if deflection is incorrect.
1. Loosen the nut on the chain tensioner.
2. Raise the tensioner until the correct deflection is attained.
3. Tighten the nut to 15-18 ft. lbs. (20-24 Nm).
NOTE: When the chain has stretched to within 1/8" (3 mm) of the muffler
mount bracket on the chassis, replace the chain. Inspect the sprockets
as they also wear and often need replacement when the chain is
replaced.
Chain Tensioner
1" (25 mm)
1/8" (3 mm)
Muffler Mount Bracket