Black & Decker CM1936R instruction manual Removing and Installing Blade Figure N, Blade Sharpening

REMOVING AND INSTALLING BLADE - FIGURE N

1. RELEASE BAIL HANDLE TO TURN MOWER OFF, WAIT FOR THE BLADE TO STOP,AND REMOVE SAFETY KEY AND BATTERY PACK.

2. Cut a piece of 2x4 wood N-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 N-1and remove flange nut N-3with 3/4 in. (19mm) wrench N-2as shown in figure N.

4. Remove square metal blade spacer O-2, square plastic blade insulator O-3 and blade O-4 as shown in figure O. Examine blade insulator for damage and replace if

necessary.fan O-5

5. When replacing sharpened or new blade on shoulder of , make sure the “GRASS SIDE” on the blade will be facing the ground when the mower is returned to its normal upright position. After installing blade O-4, place plastic blade insulator O-3on blade such that the raised lips on one side engage the edges of the blade. Then install the blade spacer O-2so 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 neces- sary.

6. Position piece of wood P-1to keep blade from turning as shown in figure P. Install flange nut with the flange against the blade spacer and securely tighten.

BLADE SHARPENING

KEEP BLADE SHARP FOR BEST MOWER PERFORMANCE. A DULL BLADE DOES NOT CUT GRASS CLEANLY OR MULCH PROPERLY.

USE PROPER EYE PROTECTION WHILE REMOVING, SHARPENING, AND INSTALLING BLADE. ENSURE THAT SAFETY KEY AND BATTERY PACK IS REMOVED.

Sharpening the blade twice during a mowing season is usually sufficient under normal circumstances. Sand causes the blade to dull quickly. If your lawn has sandy soil, more frequent sharpening may be required.

REPLACE BENT OR DAMAGED BLADE IMMEDIATELY.

WHEN SHARPENING THE BLADE:

1. Make sure blade remains balanced.

2. Sharpen blade at the original cutting angle.

3. Sharpen cutting edges on both ends of blade, removing equal amounts of material from both ends.

TO SHARPEN BLADE IN A VISE:

1. Be sure the bail handle is released, the blade has stopped and safety key and battery pack removed before removing the blade.

2. Remove blade from mower. See instructions for removing and installing blade.

3. Secure blade Q-1 in a vise Q-2.

4. Wear proper eye protection and gloves and be careful not to cut yourself.

5. Carefully file the cutting edges of the blade with a fine tooth file Q-3or sharpening stone, maintaining the original cutting edge.

6. Check balance of blade. See instructions for blade balancing.

7. Replace blade on mower and tighten securely.

N				2	1
	3
O	5
				6
1		3
	2			4
					1
		￿
			1	2
					3

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