Progressive Turf Equipment SDR 90 - Manual (Page 19)

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BLADE REMOVAL AND INSTALLATION :
Two, 1
/ 2”X 1 3/ 4” gr a de 5 bol t s wi t h l oc kwashers and nuts hold blade to
blade spindle support bar. When changing blades, be sure that these fasteners are in
good condition so they will not come loose during operation.
BLADE SHARPENING :
IMPORTANT - When sharpening blades be sure to balance them. Unbalanced
blades will cause excessive vibration, which can damage blade spindle bearings.
Vibration may also cause structural cracks in spindle housing.
Follow original sharpening pattern as shown. Sharpen blade to a razor edge.
Protect hands when sharpening. Do not sharpen backside of blade.
BLADE SHARPENING