briggs stratton

billwill

New User
I have els725 24hp cyl on cub cadetm
mower.no power runs on one cyl.blows back thru carb. new plugs. new in 2004
 
Have you checked to see if you have fire to the dead cylinder? Also have checked compression on that cylinder ( may have stuck valve).
 
Remove the valve cover from nonworking side. Make sure pushrods are in place as mentioned already. I think these are the Briggs engines with vanishing pushrods. People have removed valve cover and unable to find the pushrod. I think they slip inside the case halves thru a small oil drain opening.

If the pushrods are there and in the right place, then check to make sure the piston is moving up and down. I had this once and it ended up being a broken connecting rod. The engine ran but only had half power. Lost my shirt on that mower.
 
thanks guys. what i found was the exhause valve guide had slid out keeping the valve from opening which bentthe push rod. thanks again Bill
 

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