Craftsman 358.79828 Operator's Manual page 23

....................... USTMENTS SERVICE AND ADJ
i : i i i
ILADE SHARPENING
BRUSH TRI-BLADE SHARPENING
(Fig. 37 )
DANGER:
ALWAYS STOP THE _LNGINE BEFORE
SHARPENING A BLADE. THE BLADE
WILL CONTINUE TO SPIN AFTER THE
ENGINE STOPS OR AFTER THE
THROTTLE TRIGGER HAS BEEN RE-
LEASED. MAKE SURE THE BLADE HAS
STOPPED COASTING AND DISCON-
NECT THE SPARK PLUG BEFORE PER-
FORMING WORK ON THE BLADE.
ALWAYS REPLACE A BLADE THAT IS
BENT, WARPED, CRACKED;'_OR. DAM _
AGED IN ANY OTHER_WAY:'_NEVER_AT;
TEMPT TO STRAIGHTEN _ANDRE;_USE A
DAMAGED BLADE. USE ONLY31-1ESPE-
CIFIED REPLACEMENTBLADE.
WEAR PROTECTIVE GLOVES WHEN
HANDLING OR PERFORMING MAINTE-
NANCE ON THE BLADE TO HELP AVOID
INJURY.
TO PREVENT THE BLADE FROM CRACK-
ING OR FLYING APARTAFTER SHARP-
ENING, DO NOT FILE WITHIN 1/4 INCH OF
THE RADII SHOWN
, The 3 point, 10 inch blade is reversible. When the
cutting edge on one side becomes dull,turn the blade
over. When both sides of cutting edges become dull,
the blade may be resharpened,
• Check blades for flatness periodically. Lay the
blade on a flat surface and inspectthe blade for flatnees
before sharpening. Throw away any blade that is not
flat.
File or grind each edge in thesame manner to
maintain a balanced blade. Balance can be checked
by hanging the blade on a nailat three positions allow-
ing each point to face north. If the blade rotates at any
time it s not balanced therefore fi e the heavier edge.
- If abnormal vibration occurs after blade sharpen- --
• . JOg, stop the unit, remove the blade from the unit and
reChe_dk blade balance,
File or Grind Each
Edge in the Same
Manner to Maintain
a Balanced Blade.
Figure 37
_IELtMt3ER
When the cutting edge on one side becomes dull, turn
the blade over.
When both sides of cutting edges become dull, sharp-
en with a fiat file.
The line ,miter can be sharpened .while_attached to the ....
plastic line trimmer shield.
Avoid damage to the plastic shield while sharpening the
limiter blade.
SAW BLADE SHARPENING (Fig. 38 )
Check blades for flatness pedodically. Lay the
blade on a fiat surface and inspectthe blade for flatness
before sharpening. Throw away any blade that is not
flaL
File or grind each edge in the same manner to
maintain a balanced blade. Balance can be checked
by hanging the blade on a nail at two positions, 90 de-
grees-aparL If the blade rotates at anytime, then it is
not balanced; therefore, file the heavier edge.
If abnormal vibration occurs after blade sharpen-
ing, stop the unit, remove the blade from the unit, and
recheck blade balance.
File or Grind Each
Edge in the Same
Manner to Maintain
a Balanced Blade.
Figure 38
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