Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: adamant on June 19, 2014, 09:53:27 pm

Title: Stihl 290 won't stay running
Post by: adamant on June 19, 2014, 09:53:27 pm

What can I look into?

Title: Re: Stihl 290 won't stay running
Post by: 3000 FPS on June 20, 2014, 12:41:23 am

Let's see.
You can pull the muffler and check the piston and cylinder.
Pull the plug and check it.
While you have the muffler off check the spark arrestor and make sure it is clean.
Check the fuel lines and fuel filter.
Check the air filter.
You can also try adjusting the carb.  Richen it up a bit and see if it makes a difference.
It could be the carb is bad.
You could have an air leak and so check the crank seals and intake boot.
Check tank vent for fuel.   Loosen the cap and try starting it.

Title: Re: Stihl 290 won't stay running
Post by: adamant on June 20, 2014, 05:30:01 am

Thank you.  What is the proper carb adjustment? It ran fine till my help touched it

Title: Re: Stihl 290 won't stay running
Post by: man of stihl on June 20, 2014, 06:04:49 am

With the H and L screws lightly seated( all the way in). one full turn out. Counter clockwise is stock setting. Should get you close

Title: Re: Stihl 290 won't stay running
Post by: Fish on June 20, 2014, 09:24:30 am

Are the red limiter caps still in the carb?

Inspect the fuel line closely for cracks, especially above the tank.  If so, replace and go through the carb?