should be able to, a valve spring compressor to remove the springs, and you'll need an air fitting the will fit the spark plug holes, so you can pressurise the pistons and keep the valves from dropping while you change the springs, or you can put a piece of string on the valve stems and let them drop slow and then pull them back up...... to check clearances, move til valve is at full lift, look in with a flashlight thru the plug hole first, if there is visually a decent amount of space, cool, if it looks tight, use a feeler gauge and make sure you've got enough clearance that they wont be hitting remember to consider the high RPMs, i personally wouldn't allow anything under .020 for valve clearance, some people allow tighter clearance, some people allow less...