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  1. My knowledge of this engine is very little. I...

    My knowledge of this engine is very little. I have rebuilt carbs and exhaust valves but that is it. I do not understand why the Crankshaft needs replacing, could you please explain. I have read some...
  2. 787 hard start, rough idle, backfire during starts, burns oil off then runs great

    I have this single 787 in my Challenger boat... 3 years ago in the spring during de-winterizing I could not crank the engine. Turned out it was hydro-locked with injection oil that leaked through the...
  3. Holy crap all my previous assumptions regarding...

    Holy crap all my previous assumptions regarding plug colors and jetting just got thrown in the Lake! I will have to start from scratch and install new plugs again and tune to this plug color...
  4. Thx xlint89....I have been running it for a week...

    Thx xlint89....I have been running it for a week and a half now on Vacay, my endoscope broke so I cannot see the piston wash but the max rpm is still 6360-6400. There is a time lag between 5700-6360...
  5. FINALLY got around to changing the stator in the...

    FINALLY got around to changing the stator in the 750, Lake test today, runs like a dream, so closing out this post all those symptoms in the previous post here led 2 a bad stator ... thank you to all...
  6. I bypassed the fuel selector with 1/4 inch Barbed...

    I bypassed the fuel selector with 1/4 inch Barbed fitting, did a test run and with the fuel bowl full is hitting 6400 RPM, machine is running phenomenal, I realize I'm missing 100 RPM, could be that...
  7. xlint89: I will get more photos of everything you...

    xlint89: I will get more photos of everything you want to see by Monday latest
  8. Replies
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    [QUOTE=Dutch1;2962015]Thanks all, just did mine...

    [QUOTE=Dutch1;2962015]Thanks all, just did mine with the engine in the hull. some tips to share... removing the exhaust bracket so it's not in your way and moving the gas and oil tank forward will be...
  9. All the hoses are routed where they should be, no...

    All the hoses are routed where they should be, no kinks. Received a defective MightyVac yesterday...its going back to Amazon. Replacement should arrive tomorrow, I will vacuum/pressure test with...
  10. Sticky: So ripcuda you replace the selector every 2...

    So ripcuda you replace the selector every 2 years??
  11. I could not blow through the pressure relief...

    I could not blow through the pressure relief valve, hence complete testing will occur when I receive the MityVac. I could blow through the air inlet valve in the direction to the tank only. I had...
  12. I have been busy maintaining the 780 AND my...

    I have been busy maintaining the 780 AND my Challenger Jet Boat...no time yet to change out the stator on the SLT750 yet but when I do I will report back...stay tuned
  13. Replies
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    So the 780 did run very well with no fuel leaking...

    So the 780 did run very well with no fuel leaking into the engine after the Carb rebuilds. Then my kid flipped it and ruined the MFD(it got soaked), then after sitting for 2 weeks the fuel water...
  14. Still working on it but have had some success,...

    Still working on it but have had some success, see my post above
  15. Yesterday I had rechecked and tightened all the...

    Yesterday I had rechecked and tightened all the fuel clamps from the pump back to the tank, including the vent hose clamps. I also bypassed the Fuel selector switch with a 1/4" brass barbed fitting....
  16. Good advice, thx...I cancelled my triple outlet...

    Good advice, thx...I cancelled my triple outlet round pump order and ordered a Pentagon Fuel pump rebuild kit.
  17. Sticky: Thx K447, I found a link for the three position...

    Thx K447, I found a link for the three position valve but not the two position. Some here just cap off the RES fitting. I am going to keep looking, Watcon only has the 3 position valve. I found this...
  18. When I receive my mityvac this week I will be...

    When I receive my mityvac this week I will be able to pressure test the complete system. The check valve and pressure relief valve both tested okay by blowing through them in the appropriate...
  19. Sticky: Digging up an old post here... does anybody have...

    Digging up an old post here... does anybody have a part number for a fuel selector valve without the reserve, that is a two positions valve?...to fit 1996 slt 780?
  20. Can I replace the Pentagon pump with the mikuni...

    Can I replace the Pentagon pump with the mikuni triple outlet round pump? 451199
  21. I have the exact same problem with my SLT 780,...

    I have the exact same problem with my SLT 780, the separator only fills with gas to a level just above the bottom of the steel filter. I am only able to attain about 4500- 5400 rpm, not on limp...
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    Is there still an option to purchase these...

    Is there still an option to purchase these handles or is there anybody else that can supply them???
  23. Sticky: Thx K447....so I guess seeing that I do have...

    Thx K447....so I guess seeing that I do have this spare round MFD, I could install that in the same location where it exists on the SLT750, extend the wiring harness and the speedometer tube to...
  24. Sticky: So the OVAL MFD is mostly dead, I have tried...

    So the OVAL MFD is mostly dead, I have tried plugging it in a half-dozen times or more, once it came to life had a nice crisp display, indicated correct fuel and oil levels, then went blank... I...
  25. Sticky: So I have this E box with the wiring harness from...

    So I have this E box with the wiring harness from a 95 SLT 750, as you can see here I powered the box and set the oil level sensor to just above halfway and fuel sensor to full as indicated by the...
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