Fuel line,impulse line ? You can inspect or pressure test them. Do you have a vac tester ? You can test lines for leaks and test the impulse line for an impulse when pulling over. If they check out likely the carb.My 660 is not getting gas from carb to cylinder think it needs to be replace but not sure any ideas what else it could be and what carb is best,Saw has been modified.
Carb may just be the problem. Can you get it to fire momentarily with a tiny bit of gas in the carb throat?Just pick it up today from the shop and they said fuel line is good from tank to carb also the boot from carb to jug also good.
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