BRiggs OHV 28000 series on Toro Lawn tractor


Old 06-08-11, 08:58 AM
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Join Date: Aug 2001
Location: North East - New England
Posts: 69
BRiggs OHV 28000 series on Toro Lawn tractor

Hi Folks
Any chance only one valve adjustment is needed that could throw off the engine running smoothly? I did notice the exhaust valve didnt allow the feeler gauge through. Its since been adjusted. Intake valve is OK.

Also I noticed that when I let the parking brake loose to drive and run the blades, that the motor tends to pop and lose a little poower. Could there be a bad safety switch on its way out?
When starting it runs fine and throttles up good. So would I be correct in thinking the carb is allright?
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Old 06-08-11, 09:38 PM
cheese's Avatar
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Join Date: Jul 2001
Location: USA
Posts: 16,822
Yes, one valve improperly adjusted can make the engine run rough, bad, or not even run, depending on how far off it was. The other doesn't sound like a safety switch. It may be related to the improper valve adjustment.

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