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Push rods bending

Bent two push rods in june and again in late sept. sitting on the tractor on the left side. a friend told me that their have been problems the 25 hp. engine bending push rods. the tractor is 8 yrs. old. i changed oil and filter every 100 hrs. like the book says.

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  • gossett501 Nov 22, 2008

    the engine is a 25hp briggs and stratton engine. model no. 445777 and the type is 0154-e1

  • Backlash465 Feb 01, 2009

    I have the same problem. My engine is on a Poulan riding lawn mower. I noticed it had no power all of a sudden. With the blades turned on the motor work choke of. I pulled the cover and found the top push rod bent and the bottom one had dropped loose from the rocker arm. How do I fix it and what do I do to stop it from happening in the future?

  • chris killeen
    chris killeen May 11, 2010

    what is the engine make please? A model number would be great as well. thanks.



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Posted on Jan 02, 2017

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SOURCE: 24 hp engine. one bent push rod, second rod

This happened to me,the engine sat for some time and the valves were varnished with stale fuel,they stuck in the guides.This bent the push rod and it was only running on one cylinder.The missing push rod worked its way into the crankcase through an oil passage . I took the engine sump of and found the push-rod. I cleaned removed the head,cleaned the valves and guides replaced push rods and gasket and it ran fine after that.I use fuel stabilizer now,it keeps the varnish from forming.

Posted on Jul 31, 2009

  • 57 Answers

SOURCE: Need to Change the oil

On most likely the right side of the engine is where you will find the oil drain. It will likely be in the form of a pipe with a cap. On most of these models the will not be an oil filter. Briggs and Stratton recommends SAE 30 engine oil. Also log on to and you should be able to download an operators manual. The model and serial # are located under the seat.

Posted on May 18, 2009

  • 21 Answers

SOURCE: 24 hp engine. one bent push rod, second rod missing

just found the same problem on my father in laws mower (24 hp briggs) I took the engine off of the mower, drained oil, turned on its side and removed lower case. There was the missing pushrod wraped around the camshaft gear. no clue on how in the hell it did that! It also ended up breaking the govenor (quick look) will look for more damage tomorrow.

Posted on Jul 27, 2009

  • 155 Answers

SOURCE: oil capacity for 14.5 hp briggs engine

That would be 1.2lt to 1.4lt from empty

Posted on Aug 12, 2009

  • 61 Answers

SOURCE: No spark in JD lawn tractor engine

it could just stuck, loosen see if moves reset points.

Posted on Sep 07, 2009

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Sounds like the valves are stuck in their seats and the rods bent when the motor pushed them with the cam.
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