Which of the following describes the correct procedure for measuring valve clearance on a cold DOHC motorcycle engine?

1. Measure the clearance between the cam base circle and the bucket lifter when the cylinder is at Top Dead Center of the compression stroke
2. Measure the gap when the exhaust valve is fully compressed to its maximum lift point
3. Measure the gap between the rocker arm and valve tip when the piston is at Bottom Dead Center of the intake stroke
4. Measure the clearance between the cam lobe tip and the bucket lifter while cranking the engine with the starter motor