Re: Starting a Honda 50
My BF50 always started very well cold. I had the proper remote that came with it and it had a choke/fast idle lever that was extremely user friendly.
My BF50 never, "made" oil either.
My suggestion would be to consider purchasing the proper remote. It may well be worth the price if you consider the extra wear on the starter and battery. And the extra oil changes and potential cylinder wall wear.
DON"T run a "de-carber". If you're running rich enough to "make" oil, carbon is being washed away already by the raw fuel. That washdown in itself isn't helping starting or ring seating.
As an additional suggestion because I know the BF50 very well. Once you correct the choke/fast idle situation, the 20 hour valve adjustment is a very important one. During break-in will be the time the valve lash will change the greatest.
The BF50 is particularly sensitive in regards to tight valve clearances and cold weather starts.
However, for clarity, I believe your problem is more the lack of a fast idle/choke lever. Adjusting the valves will have little effect on that.