The engine on my craftsman 190cc 21" lawn mower runs rough + slow. if i almost fully close the throttle plate it runs normal. any suggestions on how to repair this problem
Sounds like the air/fuel mix is off.. there should be a adjustment screw on the side of the carburator use a screw driver and turn it slowly one way or the other till it starts running right
SOURCE: My son has a 3 year old Craftsman lawnmower with a
There is a governor adjustment on it.Find the governor spring coming from the carburetor the link will lead to a governor spring hooked to a metal tab,by bending the metal tab it will pull the spring tighter making the engine run at a higher rpm
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SOURCE: Craftsman 675 Torque 190cc 21"
If your carburetor has sat for a few months with fuel in it, the fuel may have gone bad. Fuel turns to turpentine after a while and leaves light yellow deposits behind. These deposits will keep your carb. from working properly.You need to dip the carb. in carburetor dip for a few hours to get rid of the deposits. You can also take the carb. to your local parts store where they may do it for free.
You may also have to replace the gasket and needle valve too if it has been sitting. So basically, you need to do a carburetor rebuild. If the float sounds like it has liquid in it, you will need to replace it too.
Good Luck!
Jim
SOURCE: My Craftsman mulcher 21" 6.0 lawn mower starts but won't stay running
clean the carb left over old fuel plugs the jets inside
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