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Author Topic: Jonsered 490  (Read 552 times)

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Offline Doug59

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Jonsered 490
« on: November 02, 2016, 05:59:37 pm »
Hi. Got a old 490 hasn't ran much but was always a good runner. But know it starts right up but will bog down under high rpms. Brand new plug,gas tryed tweaking the carb screws ever so slightly. I can get it to rev good then it will bog down. Any ideas? thanks
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Offline Cut4fun .

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Re: Jonsered 490
« Reply #1 on: November 02, 2016, 06:43:44 pm »
Stiff diaphragms maybe.  Should be worse if trying to make a cut. Running out of fuel. WAG.  Check and  rebuild carb.
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