1989 Honda FL400R Pilot Service Manual, Page 17Get this manual
GENERAL INFORMATION
OPTIONAL PARTS LIST
ITEM ENGINE
Oversize piston rings Oversize pistons
Piston manufacturing tolerance mm (in)
REMARKS
0.25 mm (0.01 in)0.50 mm (0.02 in): sizes 0.25 mm (0.01 in)0.50 mm (0.02 in): sizes The cylinder must be rebored, and an oversize piston and piston rings fitted if
worn or seizedUse the correct oversize piston rings with an oversize piston
CAUTION: Be careful not to damage the cylinder wall
0.25 mm 10.01 in) 0.50 mm 10.02 in)