Lawn Mower Runs Badly

[Matt Brandsema]

I have a Craftsman Lawn mower with a Brigs and Stratton 190cc

Topic

[Matt Brandsema]

Also the RPM’s are very low.

[EricTheCarGuy]

I have just the guy for you.

http://www.youtube.com/user/donyboy73

[Trcustoms719]

You need to adjust the float level if gas is getting in the crank case.
Donyboy73 has great videos and he should have a video on how to set your float level.

[Matt Brandsema]

So I have checked all aspects of the float system in the carburetor and everything seems fine. I checked the new seal I put in to see if it is indeed sealing and it is. (I used compressed air.) There was no gas overflowing in the carburetor when I went to check it out yet when I drained the oil there was still gas in it! I do not understand how this is happening unless maybe the piston rings are getting worn or something. Adjusting the screw on the bottom of the float bowl did nothing to help the poor idle.

Any ideas? Replacing the parts in the carburetor didn’t help anything at all. I thought for sure replacing the seal would have worked since the old one was bad and the valve sits MUCH better with the new one in.

EDIT: The sparkplug also shows clear signs of burning oil. The engine is a Flathead type engine.

[Trcustoms719]

The needle and seat not sealing is really the only thing that can cause gas to get in the oil.
Can you give me the model number and type number of your engine?

[Matt Brandsema]

The information about my engine is..

Briggs and Stratton 625 Series 190cc
Model No: 122102-1308-B1-09021759

Thanks!

[dreamer2355]

Quoted From Trcustoms719:

The needle and seat not sealing is really the only thing that can cause gas to get in the oil.
Can you give me the model number and type number of your engine?

<----- He is our resident small engine expert! He has a thread too some small engine help too C8-)

[Matt Brandsema]

I hope he can help me out! I am really stumped on this one

[Author]

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