Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 261Get this manual
POWER UNIT
PISTON TO CYLINDER CLEARANCE (1) Measure the piston diameter at point mm (0.315 in) above the piston skirt at right angle to the piston pin bore 09900-20204: Micrometer Piston skirt diameter Standard: 94.970 94.990 mm (3.7390 3.7398 in)
(2) Measure the cylinder bore at 50 mm (1.969 in) below the cylinder head gasket surface at right angle to the crankshaft pinNOTE: Purchase commercially available telescoping gage for this measurementCylinder bore diameter Standard: 95.000 95.020 mm (3.7402 3.7409 in) (3) Calculate the pistoncylinder clearance (Clearance equals difference between piston diameter and cylinder bore measurements)Piston to cylinder clearance Standard: 0.020 0.040 mm (0.0008 0.0016 in) Service limit: 0.100 mm (0.0039 in) If clearance exceeds service limit, replace piston andor cylinder or bore cylinderIdentification of oversize pistonpiston ring One oversize pistonpiston ring components, 0.50 mm, is availableOversize pistonpiston ring are marked as shown, below Piston Oversize 0.50 mm 1st2nd Piston ring Oversize 0.50 mm I.Dmark 50 I.Dmark 0.5