I have been reading a lot of threads on this site that emphasize the fragility of the VF500 engine and that got me wondering, what is the correct warm up procedure? Tell me how you warm up your VF500 before taking off. Me? Full choke for about 20 seconds, down to half choke for about 20 seconds, then no choke. I let it idle for a couple minutes while I put on my gear and off I go.