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4th June 2019, 06:21 | #1 |
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Chain saw advice please
My nephew has the STHL 660 chain saw and he said it is unusually running high RPM at idle and he doesn’t know why or how to correct it. I am not an engineer but I know we have some clever people on the forum who might know the answer to his chain saw problem?
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4th June 2019, 06:33 | #2 |
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First thing to check is a sticky cable or switch Phil, the throttle may not be returning to its stop position.
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4th June 2019, 07:25 | #3 |
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4th June 2019, 08:28 | #4 | |
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Quote:
That what I did with mine. http://www.madsens1.com/saw_carb_tune.htm
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4th June 2019, 17:13 | #5 | |
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4th June 2019, 17:54 | #6 |
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Excuse my hijack here Phil, but I have a problem with my hedgecutter.It looses revs and cuts out after only about 10 mins of use, I have had the fuel and inlet pipe replaced, the mixture was reset by a so called 2t expert,who apparently used it for 30 mins trouble free on his own hedge. When I fetched it back from the repairets and usec it straight away,,, after 10 mins.and using it on its side,it dies. Someone said knackered carburettor? Anyone any ideas?
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4th June 2019, 18:03 | #7 |
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Hi Rich - I would strip the carb, run carb cleaner through all the orifices and then rebuild with a new diaphragm/needle/filter screen kit. I can send you links to how it is done if you fancy having a go. It's all quite straightforward if you mark everything up and take photographs of where all the bits go.
But first, make surre there is nothing blocking airflow to the fins thus causing the engine to overheat. |
4th June 2019, 18:05 | #8 | |
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Quote:
the only thing that normally goes wrong with the carb is the diaphragm that acts as a pump There is little else that can go wrong with them..
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4th June 2019, 21:58 | #9 | ||
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Quote:
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5th June 2019, 09:01 | #10 | |
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