1996 intruder 115 timing

[woods83x]

I have a 96 intruder 115 model e115gledr...my question is how much should the throttle move before the timing advance starts to kick in. The carbs start to open up about a quarter of an inch before the timing starts to advance. Motor is bogging a little, seems like it use to start advance a little sooner.thank you in advance.

[boats.net]

Usually the timing will start to advance about the same time.