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To set the timing on a 12.5 hp Briggs & Stratton engine, first ensure the piston is at top dead center (TDC) on the compression stroke. Remove the flywheel cover and locate the timing key or mark on the flywheel and the engine case. Align the timing mark on the flywheel with the timing mark on the engine, ensuring the key is not damaged. If necessary, adjust the position of the ignition coil to ensure the spark plug fires at the correct timing, typically just before TDC.

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1mo ago

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