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WARNING
DONOTattempt any maintenance,adjustments or service
with engine and bladerunning. STOPengine and blade.
Disconnectspark plug wire and secure away from spark
plug. Engineand components are HOT.Avoid serious
burns, allow sufficient time for all components to cool.
Wearheavy leathergloves when handling or working
around cutting blades. Bladesare extremelysharp and can
causesevere injury.
MowerBladeReplacement
Standard Blade Wear Limit
1. Inspect the blade(Figure 15) frequently for signs of
excessivewear or damage:
(A) New blade
(B) Wearlimit (notch starts)
(C) Dangerous condition! Do not useon the mower!
Replacewith a newblade.
Figure 15.Mower bladewearfimits
WARNING
DONOTuse a cutting bladethat shows signs of excessive
wear or damage.Refer to the Section entitled "MOWER
BLADEREPLACEMENT"for proper blade inspection and
service procedures.
BladeSharpening
1. Disconnectthe spark plug wire and securethe end away
from the plug.
2. Tilt the mower up on its rearwheels. Donot tilt the
mower with the spark plug or carburetor down.
Important:Drain the fuel tank beforetipping the mower. DO
NOTtip the machine with the carburetor or spark plug down.
Oil from the crankcasewill saturatethe air filter and cause
the engine to be hard to start or not start at all. If
contamination doesoccur, the air filter will haveto be
replaced.
3. Removethe blade (B, Figure16).
Makesure that
bladehub is seated
[betweenf anges
Figure 16: Removingthe mower blade
4. Sharpenthe bladeon a grinding wheel at an angle of 22
to 28 degrees(B, Figure17). DONOTsharpen the blade
beyondthe original cutting edge(A).
5. Checkbladefor balance.If necessary,correct balanceby
grinding heavyend of blade.
6. Reinstall blade(B, Figure 16). Note the correct
assembly order:
(A) Blade hub
(B) Blade
(C) Bladeflange (facing up)
(D) Conewasher (concave side up)
(E) Capscrew
7. Checktorque of blade retainingcap screw.
Recommendedtorque should be 40 ft. Ibs.
Do not sharpen
beyondoriginal
cutting edge
Endview of
bladeassembly
Figure 17. Sharpeningthe mower blade
m.
ยข'D
11
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