1977-2000 Suzuki DT5/6/8 Outboards Service Manual, Page 44Get this manual
ENGINE 43 piston whose sliding surface is badly grooved scuffed due to overheating must replacedShallow grooves minor scuff removed grinding with of about4001) Crankshaft deflection Support crankshaft "V" bIocks, as shown, with the dial gauge rigged to read the runoutis half the runout read the gauge, and IS specified to be .within the following limit;
Limit crankshaft deflection 0.05 mm (0.002 in)
Smoothing the sliding surface with
PISTON RING As piston ring in service wears, its end gap increases to promote "b!owby", thus reducing the engine power outputBear this in mind and check the end gap of each piston ring held in the at its least worn part (the lowest porsure to hold the ring true tion of the and square and measure the gap with thickness gaugeIf the limit is exceeded, replace the ringStandard Limit 0.10'" 0.30 mm (0.0040'" 0.0120 in) 0.6mm (0.024 in)