1999-2004 Suzuki King Quad LT-300 300F ATV Factory Service Manual, Page 76Get this manual
ENGINE PISTON-TO-CYLINDER CLEARANCE Subtract the piston diameter from the cylinder bore diameterIf the piston-to-cylinder clearance exceeds the service limit rebore the cylinder and use an oversized piston or replace both the cylinder and the piston 3-36
Service Limit Piston-to-cylinder clearance: 0.12 mm (0.0047 in) Piston oversize: 0.5, 1.0 mm
PISTON-RING-TO-GROOVE CLEARANCE Measure the side clearances of the 1st and 2nd piston rings using the thickness gaugeIf any of the clearances exceed the limit, replace both the piston and piston rings