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mercury sport jet 120

  1. R

    Mercury SportJet 120 - No spark - Bad Trigger - Purple to White circuit?

    Greetings! I have a new-to-me 1995 SeaRay F16 with a Mercury Sport Jet 120 engine with the red stator on it. The engine has no spark, I've been through posts in this forum and also followed the troubleshooting steps in CDI guide. I have also disconnected the black/yellow wire from the rev...
  2. A

    Boat Stuff Sport jet 120 XR rudder, nozzle, stator assembly parts for sale

    Hello jet boaters - I have the following parts available for sale. All in excellent condition. Rudder kit. Part # stamped on casting: 831241C. This part #supercedes to 831241A1. Reduction Nozzle. Part stamped on casting: 831253C. This part #supercedes to 878111A1 Includes sacrificial...
  3. R

    got a 94 Bayliner reflexx with 90 mercury sport jet engine need impeller 15 to 17 pitch for high altitude ?

    Hi , my name is Rickey Thomas . I live in the Colorado Rockies . recently bought a bayliner Reflexx jet boat and its got a mercury 90 3 cylinder engine . runs great on the hose . took it to the water and it just seems to just plow thru the water . 10 mph max . doesnt feel like its...
    • Rickey Thomas
    • Thread
    • jet boat jet boat racing mercury engine mercury sport jet 120 mini jet boat river racing
    • Replies: 5
    • Forum: General Discussion
  4. L

    Mercury Sport Jet 120 problems with new starter

    I'm having a hard time dianosing a problem with the starter on my Mercury Sport Jet 120 xr2 (year 2000). The starter was having a hard time turning the engine: it would turn it slowly, often getting stuck. Since then, I have replaced the battery, the power cables, the solenoid and the starter...
  5. K

    1996 Dynasty Storm Jet Boat - Broken Engine

    I have a 1996 Dynasty Storm jet boat that has a 120hp Mercury 2-stroke engine that needs to be replaced or repaired. Does anyone know where I can buy a replacement engine or if it is even possible to get it repaired? My boat guy said it is irreparable, but I'm really hoping that he's wrong!
    • Kate
    • Thread
    • 1996 1996 dynasty 1996 dynasty storm 2 stroke dynasty dynasty jet boat dynasty storm jet boat engine jet engine mercury sport jet 120
    • Replies: 7
    • Forum: General Discussion
  6. L

    Mercury Sport Jet 120 flushing: doesn't look right

    I just bought a Sugar Sand Heat jet boat, it has a Mercury Sport Jet 120xr2 manufactured in 1999. Since I will use it in salty water, I ordered the Mercury Flush Kit, which is a $28 hose adapter. I tried to flush it following the manual: disconnected the cold water intake (looks like a short...
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