.......................SERVICE AND ADJ USTMENTS
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ILADE SHARPENING
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
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
_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.
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BRUSH TRI-BLADE SHARPENING (Fig. 37 )
,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_dkblade balance,
File or Grind Each
Edge in the Same
Manner to Maintain a Balanced Blade.
Figure 37
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-
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
