I have a Mercury/Mariner service manual, models 45&50 (4Cyl) 50, 60 70 (3 Cyl 2carb). Its a weighty volume and about as easy to follow as a Haynes manual. I found it quite usefull. Ive had it for a couple of years and have no need for it now. I think it must be worth a tenner and cost about £5 to post in the UK. anyone intrested?