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WARNING
DONOT attempt any maintenance,adjustments or service
with engine and blade running. STOPengine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT.Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Bladesare extremely sharp and can
cause severe injury.
MowerBladeReplacement
Standard Blade Wear Limit
1. Inspect the blade (Figure 15) frequently for signs of
excessivewear or damage:
(A) New blade
(B) Wear limit (notch starts)
(C) Dangerous condition! Do not use on the mower!
Replace with a new blade.
Figure 15. Mower blade wear limits
WARNING
DONOT use a cutting blade that shows signs of excessive
wear or damage. Refer to the Section entitled "MOWER
BLADEREPLACEMENT" f or proper blade inspection and
service procedures.
BladeSharpening
1. Disconnect the spark plug wire and secure the end away
from the plug.
2. Tilt the mower up on its rear wheels. Do not tilt the
mower with the spark plug or carburetor down.
Important:Drain the fuel tank before tipping the mower. DO
NOT tip the machine with the carburetor or spark plug down.
Oil from the crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will haveto be
replaced.
3. Removethe blade (B, Figure16).
Make sure that
blade hub is seated
[betweenf anges
Figure 16. Removing the mower blade
4. Sharpen the blade on a grinding wheel at an angle of 22
to 28 degrees (B, Figure 17). DO NOTsharpen the blade
beyond the original cutting edge (A).
5. Check blade for balance. If necessary,correct balance by
grinding heavy end of blade.
6. Reinstall blade (B, Figure 16). Note the correct
assembly order:
(A) Blade hub
(B) Blade
(C) Blade flange (facing up)
(D) Cone washer (concave side up)
(E) Capscrew
7. Checktorque of blade retaining cap screw.
Recommendedtorque should be 40 ft. Ibs.
Do not sharpen
beyond original
cutting edge
End view of
blade assembly
Figure 17. Sharpening the mower blade
m.
€'D
€'D
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