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john deere a 420

  1. 48 a modle knocking and vibrating

    John Deere
    I am new to tractors I am a tech at a dealer ship I purchased an 48 a the last owner replaced the clutch and driver it has a knock he said something about a pin behind the flywheel I took the cover off and looked in crank case it all looks like new Rudsseam fine where do I need to go and what...
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