Thanks for your help. Found the Manual. It is a C7. It states the following: "Do not push the throttle or do not hold the throttle downward while the engine is cranked. The system will automatically provide the correct amount of fuel to start the engine. If the engine does not start after 15 to 20 seconds of cranking, release the keyswitch." "Allow the starting motor to cool for two minutes. Then repeat."
That is the way I have always done it. But I was nervous on most recent trip. Last year the engine would not start. A service tech had to come to my house to check it out. His computer showed the the fuel pressure had dropped at a valve. He had me crank for a long time while the pressure built up and the engine eventually started. He told me that this was a common problem with this engine. I had the valve replace.
On this trip, while starting one morning, I may have caused a problem when it didn't immediately start. Because I was nervous I hit the throttle and it wouldn't start. I waited a while and tried again. Had to crank a while but is started.
My lesson I guess is that I should just do it the way I always have (according to the book) and not worry about this fuel valve.
Again thanks for your help.
