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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