No sir, He is referring to the grass screen that goes on the face of the flywheel. That keeps grass out of the engine air intake.
The red marked area is where he is referring to.
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1572, 1864 x2, 1810 x2, 1863 & GT1554(Dad's Ole Mowers), 1811,782D, 1872 x2, 782DT(Sold), 3235, 1860, 1772 with 3-point and Turbo.
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