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petrol tank leaking from seam?

is ,there anyway of succesfully sealing this leak at the joining seam on the tank, I tried ruffing the plastic and applying isopon but it didn't work , the lawnmower is a Mountfield rotary model SP534.
christy, November 2009
Must be a common prob with the SP534, I'm after my 3rd tank in 3 years.

Andy, February 2010
melt/weld plastic with soldering iron, but fill with water first to avoid any spark/explosion.

tit, November 2009
If it's an SV150, the only cure is a new tank - which incorporates the starter assembly.

It's possible to weld the seam with a soldering iron, (no maked flames, obviously) - you have nothing to lose by trying.

phil_saunders(a)bigfoot.com

Phil Saunders, November 2009
Don't waste your time on this one...you wont get anywhere without having the seam plastic welded, and that won't be cheaper than a new tank.

John, November 2009
link Click here to see other fixes for Mountfield.