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....................... USTMENTSSERVICE 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,turnthe blade
over.When bothsides of cuttingedges become dull,
the blade may be resharpened,
• Check blades for flatness periodically. Lay the
bladeon a flat surfaceand inspectthebladefor 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 bechecked
by hanging the bladeon a nailat three positionsallow-
ingeach point toface north. Ifthe bladerotates at any
time it snot balanced therefore fie theheavier edge.
- If abnormal vibration occurs after blade sharpen- --
• .JOg, stop the unit, remove the blade from the unit and
reChe_dkblade balance,
File orGrind Each
Edge in the Same
Manner to Maintain
a Balanced Blade.
Figure 37
_IELtMt3ER
When the cuttingedge 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_attachedto the....
plastic linetrimmer shield.
Avoid damage tothe plasticshieldwhilesharpeningthe
limiter blade.
SAW BLADE SHARPENING (Fig. 38 )
Check blades for flatness pedodically. Lay the
blade ona fiat surfaceand inspectthebladeforflatness
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 nailat twopositions, 90 de-
grees-aparL If the blade rotates at anytime, then itis
not balanced; therefore, file the heavieredge.
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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