Search results

  1. S

    120 Mercruiser I/O Trim hydraulics

    I have a 1973 120 mercruiser pre alpha I/o and it is squirting oil from the trim control valve assembly and I can't seem to find the correct size o-rings. Anyone know if there is a o-rings kit available based on my trim unit or engine type or some way to reference where to get the o-rings I need...
  2. S

    1973 mercruiser pre alpha trim control valve

    I have a 1973 120 mercruiser pre alpha I/o and it is squirting oil from the trim control valve assembly and I can't seem to find the correct size o-rings. The serial # of the motor is 3645749 and it is a 18 ft bottom SS StarCraft if that helps any at all.
  3. S

    1973 mercruiser throttle info

    Does anyone know where I can find a download of Mercruiser Stern drive I/O 1963-1973 Service manual? I actually only need section 2 (throttle and shift cable adjustment). I already own the rest of the manual but somehow ended up not having section 2. The embarrassing thing is that I've had this...
  4. S

    Overheat issue

    I have a 1973 starcraft 18 ft v bottom boat with 120 horsepower inboard outboard MerCruiser with a pre-alpha one sterndrive. (3645749 serial on sterndrive plate) I took it out yesterday for the first time in several years after putting a new impeller and housing in it and new stern drive oil and...
  5. S

    Prop won't spin

    1974 mercruiser 120 hp I/O. Changed impeller, now prop won't spin. Any ideas? Thanks
  6. S

    Winterizing 120 hp mercruiser 1973 I/O

    I know this is an old boring topic for you oldtimers and that I'm probably in the wrong section (again) so I apologize in advance. It's a big site. Can anyone give me specific info on how to winterize my 1973 120 hp mercruiser starcraft I/O Supersport. Drains/plugs, how many and where? Fogging...
  7. S

    mercruiser oil pump

    I have a 1973 18ft. starcraft ss with a 120 hp I/O. Can someone tell me what my oil pressure guage should read. Also, shouldn't it fluctuate between low idle and higher rpm's while running. Thanks in advance.
  8. S

    Merc trim lower unit goes down but not up

    Need lots of guidance. First off, I have a 1973 Starcraft 18ft SS with a 120 hp Mercruiser I/O. When I got this boat the trim unit was not on it and I later (after a few phone calls, but can no longer find this gent) received the trim unit with a few vague instructions as to how to install it in...
  9. S

    Prop installation help

    I have a 120 hp mercruiser I/O 1973. Can someone pass me on a link to instructions on how to change my prop. I'm sure someone has probably already posted this information, but it's a big sight. Thanks
  10. S

    Starcraft decking and foam

    I have a 1973 starcraft 120 hp mercruiser and can anyone explain this to me? It's my understanding that you shouldn't seal the sides of the deck to the insides of an aluminum hull. OK, if this is so, then how can you have any hope of not having waterlogged foam beneath deck (assuming it is...
  11. S

    carver's owners manuel 1987 aft cabin

    in need of manuels for winterizing, preping for summer and general information. Also in need of bimini top for rear area.
  12. S

    1973 starcraft 120hp mercruiser & I need HELP!!!

    I was recently bought by a 1973 starcraft 120hp mercruiser and I am in a world of hurt. It has a soft floor, needs the trim unit put back on, needs a alternater bought and installed, has dangling mysterious wires around the engine compartment and also under the instrument panel. I have no...
Top