Disconnect the wires from the battery terminals.
Drain the coolant from the radiator and cylinder block.
Remove the air filter.
Disconnect the connectors and disconnect the throttle cable from the engine.
Disconnect the cooling system hoses from the cylinder head.
Remove the intake manifold with carburetor, exhaust manifold and ignition distributor.
Remove the cylinder head cover.
Remove the camshaft drive chain tensioner.
Turn away bolts of fastening of a head of cylinders in sequence, the return to a tightening. Remove the bolt securing the cylinder head to the camshaft cover. Remove the rocker arm lubrication line.
Remove the camshaft, having previously fixed the chain on the sprocket.
Remove the cylinder head.