Maintenance(Continued)
Blade Service
Frequentlycheck the blade for wear or damage such as
cracks. Frequentlycheck the bolt that holdsthe blade. Keep
the bolt tight, if the blade hits an object, stop the engine.
Disconnectthe wire to the spark plug. Checkthe blade
adapter(A, Figure 201for damage.Checkfor a bent or
damagedblade, a badly worn blade, or other damage.Before
you operatethe unit, damaged parts must be replacedwith
factory replacementparts. For safety,replacethe blade every
two years. Keepa sharp edge on the blade.A bladethat is
not sharpwill causethe ends of the grass to become brown.
Removethe blade as follows.
Removing the Blade
WARNING:Befere yeu remevethe biadeo
discennect the wire te the spark piugoThe
blade has sharp edges° Whe_ ynu held the
blade, use gloves er clothmaterial tu pratect
yourhands°
1. Drainthe fueltank.
2. Lift the side of the mower that hasthe muffler or spark
plug.
3. Use a pieceof wood to keepthe bladefrom rotating.
4. Removethe bolt (B, Figure 20} that holds the blade
with a 9/16" (14ram) wrench.
5. Checkthe blade (C}according to the "Blade Service"
instructions. Replacea badly worn or damaged blade
with a factory replacementblade.
6. Mount the blade with the curved edgestoward the
housing, if the blade is upsidedown, the blade will not
cut correctly and can causean accident.
7, Fastenthe blade with the original washer (I}} and bolt.
Make surethe outside rim ofthe Belleville washer is
toward the blade.
8. Tightenthe bolt that holds the bladeto a torque of 30
foot pounds.
WARNING:Alwayskeep the bait that heids the
blade tight, a iaase bait or blade can cause an
accident.
16
Figure20: Removing the blade
SIlarpening the Blade
1. Sharpenthe bladetwo times a year or every 25 hours.
2. if the blade is on the unit, do not sharpen. Removethe
blade according to the instructions in "Removing The
Blade".
3. Cleanthe bladewith a brush, soap, and water.Checkthe
blade. Lookfor cracks, nicks, or other damage. Replace
a blade that is badly worn, bent, or damagedwith a
factory replacementblade.
4. Sharpenthe blade(A, Figure 21, next page) with a file
(B}. Makesure you keepthe original beveledcutting
edge.
5. Make surethe blade is balanced. Usea screwdriver (C}
and hold the blade parallelto the ground (t}} as shown.
A bladethat is balancedwill stay parallel to the ground.
if the blade is not balanced,the heavyend will rotate
toward the ground. Sharpenthe heavyend until the
blade is balanced.
6. A newblade will cut better than a badly worn blade.
Everytwo years replacethe old bladewith a factory
replacementblade.
Checking the Levet ef Cut
Testthe unit in a small area. if the height of cut is not level
or if the cut grass is not discharged,the causecan be: (1)
the blade is bent or damaged, (2) the blade is not sharp, (3)
a worn blade, (4) or a broken blade adapter.Beforeyou use
the unit, correct the problem.
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