Tohatsu 4 Stroke MFS 2/2.5/3.5A Outboards Service Manual, Page 94Get this manual
25) Inspection of Connecting Rod Big End Side Clearance 1Measure connecting rod big end side clearance by using commercially available thickness gaugeReplace connecting rod andor crank shaft if the clearance is over specified valueConnecting Rod Big End Side Clearance0.100.25 mm (0.00390.0098 in) Functional Limit0.60 mm (0.0236 in)
26) Inspection of Crank Shaft
1Check crank shaft gear and bearing for damage and wearReplace crank shaft ass'y or bearing if necessaryFlywheel side bearing can be replaced with new one as single unit2Measure crank pin outer diameterReplace crank shaft if outer diameter is less than specified valueCrank Pin Outer DiameterStandard value 19.98mm (0.7866 in) Functional Limit19.95mm (0.7854 in)