To me thats pretty low, I have a Optimax 08 200 with 160 hours. I would make sure you had a compression test done and scope the cylinders and reeds. All brands had problems with certain models and years. I know mercury had trouble 1999-2001 optimaxs. Evinrude had some trouble with older ficht motors. Average life of motor is 2000 hours or more, just depends on how it was ran. That 04 should have a smartcraft, which has the onboard computer which can be hooked up and print out on how the motor was ran.
Ted
Neither snow nor rain nor heat nor gloom of night will keep me from crappie fishing!
2010 Lake of the Ozarks Super Slab Champion