The exhaust camshaft sprocket has an arrow marked 1. Turn the exhaust camshaft so that the arrow is aligned with the gasket surface of the cylinder head. Engagethe cam chain with the exhaust camshaft sprocket.The other arrow marked 2 should now be pointing straight up. Starting from the roller pinthat is directly above the arrow marked 2 ,count out 15 roller pins from the exhaust camshaft side going towards the intake camshaft side.Engage the 15th roller pin on the cam chain with the arrow marked 3 on the intake sprocket. On the left side of the motor is a plug on the generater cover. Pull the plug and line up the T line up with the center of the hole. Do this before you line up the cams.