Piston

GENERAL SPECIFICATIONS
Diameter
Coded Red 88.962-88.978 mm (3.5024-3.5031 in)
Coded Blue 88.988-89.004 mm (3.5035-3.5041 in)
Coded Yellow 89.014-89.030 mm (3.5045-3.5051 in)
Piston-to-Bore Clearance 0.036-0.056 mm (0.0014-0.0022 in)
Service Limit 0.081 mm (0.003 in) MAX
Service Piston Selection (a)
Piston Bore Diameter Grade Required
89.009-89.035 mm (3.5043-3.5053 in) Red
89.035-89.060 mm (3.5053-3.5063 in) Blue
89.060-89.086 mm (3.5063-3.5073 in) Yellow
Ring Groove Width
Compression (Top) 0.520-0.540 mm (0.060-0.061 in)
Compression (Bottom) 0.520-0.540 mm (0.060-0.061 in)
Oil 4.030-4.055 mm (0.1587-0.1596 in)

(a) When replacing pistons, measure the cylinder bore and install the indicated service piston.