Briggs & Stratton 7800921-00 Lawn Mower User Manual


 
Not for
Reproduction
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Maintenance
WARNING
DO NOT attempt any adjustments, maintenance, service or
repairs with the engine running. STOP engine. STOP blade.
Engage parking brake. Remove key. Remove spark plug
wire from spark plug and secure away from plug. Engine
and components are HOT. Avoid serious burns, allow all
parts to cool before working on machine.
!
!
Engine Adjustments and Repairs
Engine adjustments and/or repairs should be performed by
an authorized dealer.
Rider Adjustments And Repairs
The following adjustment and repair items can be made by
the owner. However, it is recommended that they be made
by an authorized dealer.
How To Inspect The Mower Blade
1. Inspect the blade frequently for signs of excessive wear
or damage (Figure 34):
(A) New blade;
(B) Wear limit (notch starts);
(C) Dangerous condition - do not use on mower!
Replace with new blade. Contact your authorized deal-
er.
Figure 34: Mower blade wear limits
C
B
A
WARNING
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and
can cause severe injury. DO NOT use a cutting blade that
shows signs of excessive wear or damage.
!
!
How To Sharpen The Mower Blade
1. Raise the mower deck to the highest cutting position.
Refer to “How To Adjust The Cutting Height”.
2. Remove the bolts (B, Figure 35), washers (C) and nuts
(D) securing the mower blade (A) to the spindle.
3. Inspect the condition of the blade (Figure 34).
4. If the blade is in good condition, sharpen at 22 to 28
degrees (B, Figure 36). DO NOT sharpen beyond exist-
ing cutting edge (A).
5. Check blade balance after sharpening. If necessary,
correct blade balance by grinding the heavy end of the
blade.
6. Reinstall the blade. Torque the blade mounting bolts to
the recommended range of 30 to 40 ft. lbs.
Figure 35: Removing the mower blade
A
B
D
C
Figure 36: Sharpening the mower blade
A
B
How To Adjust The Mower Blade
Contact an authorized dealer for assistance.