2006-2009 Suzuki LT-R450 Service Manual, Page 81Get this manual
Install the valve spring with the small-pitch portion cylinder head
Large-pitch portion UPWARD Paint Put on the valve spring retainer and using the valve lifter, press down the spring, fit the valve cotter halves to the stem end, and release the lifter to allow the valve cotter to wedge in between retainer and stemHut09916-14510: Valve lifter 09916-14521: Valve lifter attach ment (Exhaust side) 09916-14910: Valve lifter attachment (Intake side) 09916-84511Tweezers