Power Fist 8706145 Manuel De L'utilisateur page 13

V4.0
LAWN MOWER BLADES
1. Ensure there is adequate working space to maneuver the blade.
2. Sharpen the blade's beveled side first, then dress the other side with the
grinder or a file.
a. Remove any nicks present on the cutting edge. Rest the blade flat on the
tool rest and move the blade side to side until the edge is nick free.
b. Sharpen the bevel. Either adjust the tool rest angle to match the
blade's bevel angle or hold the blade at the bevel angle while resting a
portion of the blade on the tool rest for added stability. Remove as
little metal as possible to attain the desired edge. Lightly dress-up the
flat backside of the blade.
c. Do not hone the lawn mower blade to a razor-like sharpness. This
increases the likelihood of nicking the blade and promotes rapid dulling.
Use a file or the bench grinder to slightly dull the cutting edge.
3. After the blade is sharp, check the blade's balance with an appropriate
shop made jig or commercially available unit. Balance the blade by
progressively removing metal until balance is attained.
CAUTION! An unbalanced lawn mower blade may cause excessive vibration,
damaging the mower and engine shaft.
SHARPENING SCISSORS
Take the scissors apart, if possible, to make the sharpening operation easier
and safer. Remove material only from the outside surface and work from the
heavy end of the blade towards the tip. Finish the edge with a whet stone.
SHARPENING TWIST DRILL BITS
Sharpening twist drills can be a tricky operation that even some experienced
mechanics never master.
Sharpening twist bits freehand will require considerable practice and dry runs
with the grinder OFF to acquire the skill of rotating the bit while maintaining the
original cutting edge angle.
1. Set the grooved tool rest horizontal to the face of the grinding wheel.
2. Hold the drill shank between the thumb and index finger, resting the back
of the index finger on the tool rest.
Visit www.princessauto.com for more information
6 in. Bench Grinder 8706145
13