Question about Jabsco V Flo Variable Speed Pump 5.0

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Jabsco vflo 5.0, its self adjusting but won't prime. I troubleshot everything short off adjusting psi screw since it's new, Any advise, thank you

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1 Answer

I want to reduce the pressure a little, where is


There is no adjustment like you are believing. You can order three different pressure switches for that pump. 25,40 and 50 PSI.

Oct 21, 2013 | Jabsco Pump 31395-0094

1 Answer

Porter Cable pancake rated at 150 PSI stops at 135 PSI. It has done this since it was new.


If it's pumping up to 135 psi, shutting off and then restarts at the same pressure point since it was new, the pressure switch may have been set low at the factory. I don't know which model you have but most pressure switches have directions inside their cover as to how to adjust the cut-out and cut-in pressures. Be careful doing this, overpressuring the tank is dangerous. There is an adjustment screw or bolt that changes the pressure on the switch spring. Some pressure switches have two screws, one for cut-in and one for cut-out pressure. A few have one that adjust both pressures. If you do adjust the cut-in/cut-out levels, do it slowly and cycle the motor a couple times between each adjustment to see where it turns off and on. If the compressor is doing what you want it to, only pumping to 135 psi, it will live longer than if you adjust it up to 150 psi. Those last 15 psi of air are hard to get and will mean the motor will be running longer and more heat will be building up in the head.

Oct 01, 2012 | Porter Cable Air Tools & Compressors

1 Answer

I have a No.359 Won't stay running, I put new fuel,spark plug,carb-kit? Also, do you need a special tool to adjust carb?


The carb screws have anti tamper sleeves on ( one red one white ) to adjust the screws you need to draw the caps back, you can do this with a small self tapping screw, screw it into the centre of the cap, when it hits the adjuster underneath the cap will draw back as you carry on screwing it in, only pull the cap back far enough ( approx half way ) you can then remove the screw and insert a 2mm flat blade screw driver through the centre of the cap, the adjuster underneath will now turn, the reason not to take the can right off is because the screws are only 2mm across, and it is near impossible to adjust the saw whilst it is running.

Oct 08, 2011 | Husqvarna Chain Saw 20" Bar

1 Answer

Hello, I have a McCulloch 16" chainsaw, model 2618CAV, It starts but dies very quick, I've put in a new spark plug, checked the exhaust outlet for wasp nests, but it just won't go. can you...


check the compression on saw it has to have a min. of 110 psi to run properly...to do this you have to a compression tester bought at any auto parts store.. remove the spark plug and pull the pull rope 5 times this will give you the psi reading...

Jul 26, 2011 | Garden

2 Answers

#3&4 cyl. Have spark and fuel but air idle screws don't do anything. When warming up backfired out exhaust and carbs


Check the valve lash-sounds like valves are tight in those cylinders. Idle air screws won't do anything if the valves are tight, the motor doesn't develop vacuum when the cylinder doesn't seal. And without vacuum, carbs don't work. If the valve lash is within specs, run a compression test, most "rockets" run a minimum PSI of 150 to be within spec. Good luck!

Jun 11, 2011 | Suzuki GV 1400 Cavalcade LXE Motorcycles

1 Answer

I have a Dewault D55141 air compressor that runs to 150 lbs of pressure and blows the valve and releases air. I bought it new about 2 yrs ago? What needs to be done with this problem? I noticed on this...


Hello;
150 is your cutout pressure. It's the factory setting and is not a problem. But, It appears you have a pop off (safety) that is set for 125 psi, So, If you want 150 psi, the pop off needs to be adjusted. If you want 125 the the cut out switch needs the adjusting. The setting. More than likely the 125 psi pop off valve is correct and the switch needs to be adjusted down below the pop off pressure. To sdjust the switch, remove the cover of the box the cord comes out of.Adjust using the screw(s). There should be one for cut in and another for cutout pressuressures. The cut in pressure should be 90 psi and the cutout should be at 125 psi.If the pop off valve blows off at 125, It needs either replace or adjusting. It's best to replace it.since the spring inside has lost tension. You will be constantly adjusting it otherwise. Good Luck -Ned_ Take caution not to get your tool or fingers into the electrical in the switch box.

Apr 15, 2011 | Dewalt & 2HP Hand Carry Heavy Duty...

1 Answer

Snapper SS312 weed eater. Cranks when primed but won't run


I am sorry to say this, but the compression for that type of engine should be atleast 120 psi. Remove the muffler and look at the cylinder, it is scarred beyond repair.

Mar 30, 2009 | Garden

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