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ROTATING BLADES
Replacement
1. Remove two screws for the SPC50 and three screws on the SPC75 that hold the impeller cutter ear to
the impeller.
SHARPENING
Rotating blades may be re-sharpened as cutting efficiency decreases. Remove impeller as described
above. Remove attaching hardware for cutting ears. Using a gloved hand, firmly grasp blade and with
an angle grinder grind a new edge on interior of blade only. Interior of blade will face center bolt of
impeller. The picture below has the edge to be resurfaced highlighted in black. DO NOT grind on
opposing side of blade as this will reduce or impair any cutting ability.
Grind only on area highlighted in black
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