Much fuel leaked under engine when ignition was left on for
a short while. Traced fault to front carburettor float valve sticking in down
position as the float arm had worn and was not contacting lower travel stop correctly,
allowing the valve to fall lower than it should therefore snagging float arm in
down position. Initial leak from float bowl overflow pipe, then from starting
carburettor. Took a couple of goes to properly rectify problem (had to smooth
wear from float arm and also re-shape float arm so it would engage on lower
travel limit peg on float bowl upper assembly. Checked rear carburettor float
action - fault not evident, lower travel stop works. Cleaned both float bowl
inlet filters (front one contained a fair amount of crap). Took a couple of
goes to get fuel supply banjo fitting washers to seal correctly. Had to smooth
fibre washers flat on emery paper as they had worn and were hard. Need to
replace washers soon.
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