sears riding mower want start


hi i have a sears riding mower 17HP briggs engine i replaced the starter battery turn the key and it want start engine want turn allway around i took the plug out and engine spins like crazy whats the problem im puzzled
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You may have replaced the spark plug with the wrong type and since it's too long it hits the piston and the engine won't turn any further. Joe
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Joe wrote:

Or the starter is too weak to overcome the normal compression stroke.
Check all connections, too. Clean & tighten. Check battery cranking voltage - should not drop below 10 v while cranking.
Rob
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He only replaced the battery?
OP check cable connections on both ends of the battery cables. The positive cable may seem tight, but check it at the starter. Check the ground at the frame. They need to be tight. -- Oren
..through the use of electrical or duct tape, achieve the configuration in the photo..
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