Valve Spring question

#1
Ive got a 5hp 1975 130232-0596 Motor im getting back into shape. I removed the valves and noticed the Exhaust valve was significantly larger than the Intake...Is this right?
valves2.jpg
 
#2
Yes, longer on the exhaust side.

You have a valve there that also looks like it is seating poorly, looks like there is carbon on the seat area. A poorly seating valve will make a hard to restart warm condition, now is a good time to address it.
 
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