Outdoor Power Equipment and Small Engines - Motor Rebuild

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XxBubbaxX
09-06-07, 04:18 PM
OK, I am trying to fix my lawn mower... the connecting rod shattered into a thousand peices so I replaced it... The motor is a 14.5 B&S I/C ....Everything went as planned And I have the motor back in it. Here is my problem...The engine wont crank over with the spark plug in it. If I pull the plug I can crank it just fine.. It seems the motor wont turn when the piston is building up pressure any ideas would be greatly appretiated

cheese
09-06-07, 10:30 PM
Sounds to me like the valve clearances are too lose or the compression release mechanism was damaged when the rod came apart and isn't functioning (common occurrence when a rod breaks).