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    Engine 1989 S21BSN lacks power

    I'm the 2nd owner and have enjoyed this mower for over 10 years. The carburetor is a metal, adjustable Wallbro LMR-10, and lately it's been lacking power at high rpm's. In the spring I replaced the ignition block and spark plug, I've checked that the exhaust ports are clean, and I just did a...
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