I repaired my B&S engine on my sprayer last year and today it was working good then I look back today spraying and I'm not getting full rpms to the sprayer pump and the shaft from the engine to the pump is sort of just twitching around. Turn the eingine off (it was running just fine) and I could spin the shaft freely by hand. Doesn't this come off the crankshaft? Before and after shots below. Also I used it last year with no problems other than I had to replace the magneto.
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