I have replaced the head gasket on the Briggs and Stratton engine, model #313777-0134-E1, on my riding mower. It is breaking the fly wheel key and does not start. When we move the engine it moves smoothly and is not hitting anything. The push-pull rods are not bent. The valve tappet setting is also correct to specifications. Can you please advise?
By Singh from Victoria, Australia
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