Call Hunter
I checked out the related link that Mark put in his response. While that information may provide some use, the Hunter manual is 100 times better! Call Hunter Marine and follow the prompts on the recording to get to Customer service. My 23.5 had a manual and it is worth whatever it costs to but it from Hunter (it is too long to copy and mail). There is a wealth of knowledge in there. Everything from detailed instructions on how to step the mast to rigging specifications, part numbers, etc. Call Hunter at 800-771-5556