Rotax 125 senior starting sound/issueHome › Forums › New to Karting › Rotax 125 senior starting sound/issueThis topic has 16 replies, 5 voices, and was last updated 13 years, 5 months ago by Greg Welch.Viewing 16 post (of 16 total)← 1 2AuthorPosts October 31, 2012 at 5:16 pm #65972 Greg WelchParticipantThat #5 part is an option between two different styles of gears. The one up and to the right is an older obsolete gear and the one that you had in your engine is the one connected to the crank itself.AuthorPostsViewing 16 post (of 16 total)← 1 2You must be logged in to reply to this topic.Log In Username: Password: Keep me signed inLog In