User Manual
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  NOTE: For the best performance, install a new blade before the cutting season 
begins. During the year, file down any small nicks to maintain the cutting edge. 
   DANGER 
POTENTIAL HAZARD 
♦  A worn or damaged blade can break. 
WHAT CAN HAPPEN 
♦  A piece of the blade could be thrown into the operator’s 
or bystander’s area, resulting in serious personal injury 
or death. 
HOW TO AVOID THE HAZARD 
♦  Inspect the blade periodically for wear or damage. 
♦  Replace a worn or damaged blade. 
    If it is necessary to remove the blade for replacement or sharpening, complete the 
following steps: 
    6.  Remove the blade. Make sure to grasp the end of the blade using a rag or a thickly 
padded glove. Remove the blade bolt. 
  7. For Sharpening: File the top side of the blade to maintain its original cutting angle 
(Fig. 20A) and inner cutting edge radius (Fig. 20B). The blade will remain balanced 
if you remove the same amount of material from both cutting edges. 
    8.  Check the balance of the blade by placing the center hole of the blade over a nail or 
screwdriver shank clamped horizontally in a vise (Fig. 21). If either end of the blade 
rotates downward, file that end (not the cutting edge). The blade is properly 
balanced when neither end drops. 
FIGURE 19 
Sail 
Sail 
Sail 
Flat 
Wear 
Slot 
G0219 
FIGURE 20 
Cutting Edge Radius 
Cuttin
g
 An
g
le 
G0220 
FIGURE 21 
G0221 










