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Thanks John. I'll strip it down tomorrow & keep you posted. BTW, I think it takes more than 3 pumps to prime it, so maybe the diaphragm is the issue...

Thanks again John. I agree, it's likely a carb refurb is required. I just wanted to know if I'd missed something obvious. I'll have to remove carb to see what make it is & to order the correct kit. I assume eBay is a good place to start looking? I'm actually using brake & clutch cleaner...

Thanks John. I'm fairly sure the pipes are not split as I've had both grommets out to remove carb & to ensure there's no kink in the pipes, & didn't see any issues. No leaks either. I agree it's an odd problem to have. Overall it's down on power (revs) even at the best position. When...

I have a Hitachi CH62EA3 2 stroke hedgetrimmer. It doesn't seem to rev as high as it used to. If the blade is pointing upwards, it runs at nearly full power. If the blade is pointing down, it barely revs at all. I've checked there are no splits in the hoses, the tank filter seems clean & no...

Thanks for the quick reply. Assuming the header tank is full, what exactly do you mean by "cut the cold feed just before it enters the primary pipework and make sure theres no blockage"?

Hi Since I drained down my central htg sys to replace a rad, the overheat trip switch needs resetting all the time. I've added anti corrosion AND anti noise additives, but after 3 weeks it hasn't improved. I know there's air in the sys (v loud banging at times when switching off) & the...