Likely to be fuel starvation - check the fuel tank cap for a small breather hole - make sure it is clear. Then make sure there is a flow of fuel to the carb from the tank. If there is a fuel filter (could be inside the tap) check it is clear.
Lucy
June 2008
I can answer this question...
my Peugeot trekker will run for about 400 yards then slowly loose revs?
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