TGB Blade 250 ATV Quad Service Repair Manual, Page 69Get this manual

TGB Blade 250 ATV Quad Service Repair Manual, Page 69

6CYLINDER HEADNALVE Remove the cylinder head mounting bolts from cylinder head right side, and then remove nuts and washers
falling into crankcase as cleaning Use valve cotter removeassembly tool to press the valve spring, and then remove valves0
Caution In order to avoid loosing spring elasticity, do not press the spring too muchThus, press length is based on the valve