[Dave Willis]

Van had to go in for a service today, I forgot to empty the tank (they don't want the extra 700kg on their lift)
So, I flopped the guttervac pipe in the hole, fired it up for about five seconds then whipped the pipe off. Couldn't believe how fast I could dump a tank using the syphon technique 

Might try diesel next!

[Stoots]

Nice thinking.

I empty mine with a hose pipe syphon sucking via mouth. 

[Fin Clearview]

I used to use the vac for cleaning out our tanks whenever they had any debris on the bottom.

[JandS]

Be careful you don't flood your vac motors and ruin them.....carpet cleaning machines have a cut off for vacs when waste tank is full but not sure if guttervacs do.

[Shrek]

With a gutter vac , I was advised to suck up a good few litres to wash all the mud that sticks inside the poles out , so I don't think it's a problem

Be careful you don't flood your vac motors and ruin them.....carpet cleaning machines have a cut off for vacs when waste tank is full but not sure if guttervacs do.

[JandS]

Was thinking 700 litres sucked into a less than 700 litre guttervac.....hard to judge how much you are sucking out as presumably doing it 4 or 5 times depending on size of quarterback.

[Stoots]

eh, i think you just turn the thing on to create a syphon then straightway after a couple of seconds pull the pipe off..hey presto

Not advisable to switch gutter vac on and leave..although mine does cut out when full