Hey everyone I can sure use some help here. I just bought a 1987 Chris Craft with a Mercrusier I/O in it . First question is how do you choke it I looked all over and can't figure it out. The next question is I would like to service this engine before using it, where can I find info on doing that. The last question is, the trim on this Alpha drive is not working you can here it click but thats it. The guy said that the hydraulics need replacing but I do not think so. Any help with this is greatly appreciated.