The lower unit on this old OptiMaxx has a crack in it…A guy down the road has a lower unit on a 98 OptiMaxx… Unfortunately I can’t get the serial number off of it… The plate is completely faded. What’s your best guess on these two gearcases matching up? Of course I’ll do a pressure test on it before I buy it. He only wants $250 for it. Does my OT737852 have a 1.87?
Yours should be a 1.87 ratio, HOWEVER, I can't even tell if your guy down the road has a 2.5L (let alone the correct gearcase or shaft length).
Rails.... Diaphragms.... Gearcase.... sounds like this is becoming a heck of a project!
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
It is! I wanted a project. So here we go.
Yes. His is a 2.5L…
There is a metal welsh plug on the engine block. Itll have the SN
Mercurymarine.com
Launch parts catalogue
Enter your SN
Find appropriate section, and that'll give you part numbers for applicable lower units
1995 Champion 190 dcx Elite
Or simply go to www.mercurypartsonline.net, setup a login, and use your engine serial number.Originally Posted by RickCamilleri
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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