Hi

Have been given a Lavor thermic petrol engined pressure washer which I have
got working again

The water pressure is higher than my on big karcher electric washer

The only thing that doesnot work is the chemical feed pipe

The pipe is clear the filter on the end clean and it is connected to the
pump but it does not suck up any fluid

On my karcher there is a low pressure setting on the wand which adds
chemical to the spray but there does not appear to be any setting on the
Lavor one

any help appreciated

Tony