Brake System Maintenance Instructions (Cont)(38) Check inside diameter of end coverbushing (62).(39) If bushing diameter is more than 0.005 in.(O. 12 mm) larger than crankshaft diameter,remove end cover bushing (62) from endcover.NOTERemove unloader bore bushings only ifdamaged.(40)(41)(42)(43)(44)Using unloader bore bushing removaltool, remove two unloader borebushings (48).Remove two valve seats (49).Install unloader bore bushings (48) incylinder block (5).Ream unloader bore bushings (48)inside diameter to 0.3750 in.(9.5 mm).Install valve seats (49) in cylinderblock (5).b. Cloanhg/inspection.Adhesives, solvents, and sealingcompounds can burn easily, can give offharmful vapors, and are harmful to skinand clothing. To avoid injury or death,keep away from open fire and use inwell-ventilated area. If adhesive,solvent, or sealing compound gets onskin or clothing, wash immediately withsoap and water.(1)(2)(3)(4)(5)(6)Clean all metal parts with dry cleaning solvent.Remove rust and scale from cavities in cylinder head and crankcase.Clean oil passages through crankshaft, crankcase, and end cover.Inspect all metal parts for cracks and damage.Inspect pistons for damage and enlarged ring grooves.Replace unserviceable parts.11-23
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