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  1. MB465

    155 mag pump bearing installation

    If you put the shaft in the freezer then heat the bearings on a old shop light with the flat glass put the bearing on the glass with a piece of metal on the other side of the bearing. Heat the inner race to around 200f then slide it on the shaft. Then put the whole assembly in the freezer and...
  2. MB465

    650 sj issue

    The diaphram on the other side of the carb as the jets? I rebuilt that ended up yanking the motor out yesterday and changed the crank seals so we will see if that fixes it.
  3. MB465

    SJ 650 issues

    update lowered the pop off pressure and it started to run a little better now I can roll into the throttle and its fine but if I wack it it does the same surge until I back out and roll back into it.
  4. MB465

    SJ 650 issues

    Just a b pipe and some port work. other thing is that this all happened about 30 minutes after I messed with the b pipe setting but I put it back to what it was don't know if I could have got the motor too hot and wrecked ship.
  5. MB465

    SJ 650 issues

    not sure what to put in there, It makes me nervous that it ran good before with that main and still does on top if you unload it and get it going. I think I should probably just go halfway back to stock and see what it does? also found out last night that my pop off pressure was off of what it...
  6. MB465

    SJ 650 issues

    for sure it is but the top was good before and the pilot is I think around stock and it was gutless on the bottom
  7. MB465

    SJ 650 issues

    did not do a pressure test but sprayed some starter fluid on any possible spots (not front crank seal) and didn't hear anything. If I have a solid vacuum on the carb line wouldn't that mean I probably don't have a system leak? not sure what that third line on the carb actually does.
  8. MB465

    650 sj issue

    Looking for some direction with this. When you are half throttle to full the ski only gets to about 10 mph. It surges up and down not gaining any speed. If you jump the ski out of the water it takes off and runs fine until you let off the throttle and it'll go back the same thing. first we...
  9. MB465

    SJ 650 issues

    Looking for some direction with this. When you are half throttle to full the ski only gets to about 10 mph. It surges up and down not gaining any speed. If you jump the ski out of the water it takes off and runs fine until you let off the throttle and it'll go back the same thing. first we...
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