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  1. 317 KT17 series 1 rering - which ring size should I use

    Hydrostatic Drive Tractors
    I'm putting new rings in the right cylinder of my KT17 series 1 engine. The piston has STD stamped into it so I understand it's probably the original. The bore is not obviously scratched or scored but oil is seeping into the cylinder when the engine's not running (and blowing smoke when it is)...
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