Chapter 3: Cutting Blade - MTD 830 Series Shop Handbook

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To remove the cutting blade:
1. Disconnect and ground the spark plug wire.
2. If the level of gasoline in the fuel tank is great
enough that it will spill if the mower is tipped,
remove the fuel filler cap, place a plastic bag
over the neck of the fuel tank, and reinstall the
cap.
3. Tip the mower with the muffler side down, or tilt
the mower back on a work bench, with the front
wheels up. See Figure 3.1.
Figure 3.1
4. Block the blade form rotating using a block of
wood or a blade holder tool.
5. Remove the blade bolt and diamond-shaped
bellville blade spring using a 5/8" wrench.

CHAPTER 3: CUTTING BLADE

Blade
Bolt
Belville spring
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830-860 SERIES SELF-PROPELLED MOWERS
6. Lift away the blade. See Figure 3.2.
7. Inspect the blade. If it is bent or worn beyond
proper sharpening, replace it with a new blade.
8. Sharpen and balance the blade if it is not badly
worn.
NOTE: The 830 and 860 Series mowers have a
3-in-1 blade. The outer part of the leading edge
cuts the grass. A wing behind it lifts the grass for
the next blade and propels clippings toward the
bag or side discharge chute if the path to either
is open. A stepped-up cutting edge just in-board
of the outer cutting edge mulches clippings as
they fall, if the side discharge chute is closed
and the mulch plug is in place.
5
Blade adaptor
Figure 3.2