Should 1998 mxz ski doo be easy to start?

I have a 98 mxz 670, and yes at times its hard to start... Prime it 2-3 times pull if it doesnt start give it 2-3 more primes until it starts.If it is very cold out try holding the throttle in halfway and pull start it at the same time as holding the throttle in. If you have the 670 it has very high compression so the pull start will be heavy to pull.