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  1. J

    AQ 125B Swap

    Hey guys, Okay, I recently found out that the camshaft on my 1985 AQ 125B was pitted, the oil pump had seized and none of the parts to rebuild this engine exist. So, since there are no parts for this motor any longer I'd rather not put one of these motors back in. What are my options for an...
  2. J

    Tachometer Problems

    Hey guys, So I finally got my boat running and realized that my tachometer isn't functioning properly. The needle moves all over the place and I'm not sure why. Does this sound like a bad gauge? Bad connection? I also found that when I hook my dwell meter up I won't get any readings at all...
  3. J

    Tuning Problems (AQ125B)

    Hey Guys, Hopefully I'm not becoming annoying yet...lol! Anyway, finally got everything running pretty good, but now have two new symptoms plus a possible third. 1. When reving up the boat it seems to rev just fine, but if I leave the boat at a higher rpm than idle and keep it at that number...
  4. J

    Plug gap for AQ125B

    Hey guys, Where can I find the proper plug gap for an AQ125B? Thanks, Keith
  5. J

    Cam Gear question (AQ125B)

    Hey guys, Talk about bad luck! I went ahead and replaced the timing belt the other day and when I had the belt off I went to stand up, leaned my hand on the cam gear and turned the camshaft! I think I got the cam back in position, but is there anyway to make sure? Thanks, Keith
  6. J

    AQ125B Rebuild: Is it worth it?

    Hey guys, Was wondering if this motor is worth a rebuild. I mean, is it a good enough motor to put the effort into rebuilding or is replacing it with a different motor a better route? Thanks, Keith
  7. J

    Carb Adjusting and Overheating Issue

    Hey guys, Finally got my AQ125B running, however, I'm running into some carb and overheating issues. First, everytime I try to rev the engine up above 3500rpm or so it begins to putter out and die. What might the cause/s of this be? Second, what is the "normal" operating temperature of this...
  8. J

    Heat Exchanger

    Hey guys, Ok, been trying to figure out how the heat exchanger works. How does the engine get cooled with both coolant and incoming water? I'm wondering too because the cap that goes over the strainer broke off and I'd like to know why that cap is there and what would happen if I didn't have a...
  9. J

    Instrument panel identification

    Hey guys, On the left hand side of my instrument panel I have two toggel switches, one say's BLOW and the other NAV. I know the one that says BLOW is for the Blower but have know clue as to what NAV is or does. I thought at first that it stood for Navigation, but there isn't a navigation system...
  10. J

    Trouble getting my Volvo Penta AQ125B started

    Hey guys, Looks like I'm having trouble getting both fuel and spark to my combustion chambers. I'm pretty sure I have the fuel problem narrowed down to a bad fuel pump which seems to bring fuel in but does not send fuel to the carb. Hopefully replacing that will solve the problem. As far as...
  11. J

    Engine and Accessory Identification plus Steering Issue

    Very first thread on this forum, hoping I do this right. Just inherited a 1985 Volvo Penta 125 (not sure if its A or B): Serial Number MWK45355E585. Know alot about old cars but am brand new to the boat world and would like resources on accesory identification, cooling and the like. I'll need...
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