Maintenance - Black & Decker MM1800 Instruction Manual

MAINTENANCE

Before each mowing session unplug the mower and ensure that the blade has stopped. Check all nuts, bolts and screws to ensure proper
tightness, Be sure to check the blade fastening system.
IMPORTANT: To assure product SAFETY and RELIABILITY, repairs, maintenance and adjustment should be performed by authorized service
centers or other qualified service organizations. Use only identical replacement parts.
Inspect and thoroughly clean your mower at the beginning of each mowing season for longer life and better performance.
From time to time turn the mower off and wait for the blade to stop. Then unplug the power cord and turn the mower on its side. Using an object
such as a stick or rag, wipe out any accumulation of grass in the blade area. Also clean out any grass or debris which may be packed around the
discharge/mulch door area. Be careful of the sharp edges of the blade.
REMOVING AND INSTALLING BLADE (FIGURE L, M, N)
1. RELEASE SWITCH LEVER TO TURN MOWER OFF, WAIT FOR THE BLADE TO STOP, AND
UNPLUG MOWER.
2. Cut a piece of 2x4 wood (L-1) (about 2 feet long) (610 mm) to keep blade from turning while
removing flange nut.
3. Turn the mower on its side. Wear gloves and proper eye protection. Be careful of sharp edges of
blade. Position wood (L-1) and remove flange nut (L-3) with 3/4 in. (19mm) wrench (L-2) as shown
in figure L.
4. Remove square metal blade spacer (M-2), square plastic blade insulator (M-3) and blade (M-4)
as shown in figure M. Examine blade insulator for damage and replace if necessary.
5. When replacing sharpened or new blade on shoulder of fan (M-5), make sure the "GRASS
SIDE" on the blade will be facing the ground when the mower is returned to its normal upright posi-
tion. After installing blade (M-4), place plastic blade insulator (M-3) on blade such that the raised
lips on one side engage the edges of the blade. Then install the blade spacer (M-2) so that it sits
inside the raised lips on the other side of the blade insulator. Be sure to align the flats in the hole of
the blade spacer with the flats of the shaft, rotating the blade and blade insulator together as nec-
essary.
6. Position piece of wood (N-1) to keep blade from turning as shown in figure N. Install flange nut
with the flange against the blade spacer and securely tighten.
9
L
2
3
M
5
1
3
2
N
1
6
4
1