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Mowers

On briggs or any motor that has over head valves ..if your having hard start hesitation or just seems like the batterys dieing or it seems the starter just won't turn the motor over .. these motors are high compression, there's a compression release on the cam, the fix is replace the cam and lifters that's it.. but would still have starter and battery tested to rule them out..

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I have an xmark tractor with a Briggs & Stratton 25 HP intek v-twin engine. The engine turns over very slowly and usually just stops after about a half turn when trying to start on battery voltage alone (either its own battery or when jumped to a non-running car). If I jump it from a running car, it usually starts right up. Sometimes, however, it does turn over slowly and stop even when jumping from a running car. Another hit of the key usually gets it going in this situation. Any ideas what my problem could be? I'm thinking that the decompression feature is not working properly. How would I go about checking/adjusting this? I have also seen a couple of reports here where a new starter seemed to fix a similar problem. My plastic starter gear has stripped off all its teeth once and the new one seems to be getting beat up a little already, so it seems to me that that my engine must be harder than it should be to turn over rather than my starter being weak. Any thoughts on this? Thanks,


I feel you are in the ballpark with the decompression feature. The Inteks have them alright. The best way to get the feature to work correctly is very simple. Adjust the valves. Just pull the valve covers off and set the valve lash.Torx head screws and locknuts are on the rockers. It isn't real hard. That should "enable " the compression release feature and possibly eliminate your starting problem.
One the engine hits about 300 RPM, the compression release feature is disengaged and no longer a factor.
Intake and exhaust valve clearances for your particular model are available on the Briggs and Stratton website if you look around.

Aug 27, 2010 | Briggs & Stratton Garden

2 Answers

just replaced head gasket, now has to much compression and won`t wind over fast enough to start. have had starter checked and seems ok .10.5 hp briggs and stratton motor in a murray 32 inch ride on lawn mower


A head gasket will not greatly increase the compression in a a Briggs motor.

My question is Why did it need a head gasket to begin with?
Will bet it was not running...

A more likely cause if not a fuel problem is to check engine oil if that is good remove the wire from the low oil sensor and see it it will start up for you.

r/
David

Jan 23, 2010 | Mtd LAWN MOWER PART # 683-04163B FRAME...

2 Answers

i have crafsman 48" riding mower with a 24 hp intek motor


Bent push rods are a function of the valve guide coming loose in the head. The valve binds and you end up with a bent pushrod. Fix: Replace head. $94.00

Jul 13, 2009 | Briggs & Stratton Briggs Stratton Intek V...

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