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4-12
375527_0406
Sharpen the blades on a grinder following pattern as
shown (Fig. 4-20). Touch-up sharpening can be done with
a file.
Check the blades for balance following grinding. A
commercial balancing tool is available through most
hardware supply stores, or balancing can be done by placing
the blade on an inverted line punch or 1/2" bolt. Blade
should not lean or tilt. Spin the blade slowly, blade should
not wobble. If blade is out of balance, true it up before
reinstalling.
Lay the blade on a flat surface and check for distortion
(Fig. 4-21 and 4-22). Replace any distorted blade.
Do not re-use spindle bolts which have stripped, worn or
undercut threads. Torque bolts on spindles with blade
saddles to 65-75 foot-pounds when reinstalling blades.
Torque bolts on spindles without blade saddles to 118 foot-
pounds when reinstalling blades.
Figure 4-17