If the engine is cold, and the weather cold, pull the enrichment knob all the way out.
If one is cold and the other warm, pull the enrichement knob halfway out.
If either or both is hot, don't pull the enrichment knob at all.
Or, properly tune the carb and don't worry about the enrichment knob until it's too cold to ride, anyway.
If one is cold and the other warm, pull the enrichement knob halfway out.
If either or both is hot, don't pull the enrichment knob at all.
Or, properly tune the carb and don't worry about the enrichment knob until it's too cold to ride, anyway.