Murray 22" Front Drive manual Maintenance, Blade Service, How To Sharpen The Blade

MAINTENANCE

BLADE SERVICE	5. Check the blade according to the ”Blade
WARNING: Before you inspect		Service” instructions. Replace a badly
		worn or damaged blade with a factory re-
the blade or the blade adapter,		placement blade.
disconnect the wire to the spark	6.	Mount the blade with the curved edges to-
plug. If the blade hits an object, stop the
		ward the housing. If the blade is upside
engine. Disconnect the wire to the spark
		down, the blade will not cut correctly and
plug. Check the unit for damage.
		can cause an accident.
Frequently check the blade for wear or dam-
	7.	Fasten the blade with the original washer
age such as cracks. Frequently check the bolt		and bolt. Make sure the outside rim of the
that holds the blade. Keep the bolt tight. If the		Belleville washer is toward the blade
blade hits an object, stop the engine. Discon-		(Figure 23).
nect the wire to the spark plug. Check the
	8. Tighten the bolt that holds the blade to a
blade adapter for damage. Check for a bent or
		torque of 30 foot pounds.
damaged blade, a badly worn blade, or other
damage. Before you operate the unit, dam-		WARNING: Always keep the bolt
aged parts must be replaced with factory re-		that holds the blade tight. A loose
placement parts. For safety, replace the blade		bolt or blade can cause an acci-
every two years. Keep a sharp edge on the		dent.
blade. A blade that is not sharp will cause the

ends of the grass to become brown. Remove	HOW TO SHARPEN THE BLADE
the blade as follows.

HOW TO REMOVE THE BLADE			WARNING: Vibration is the re-
			sult if the blade is not correctly
	WARNING: Before you remove		balanced. A blade that is dam-
			aged with cracks can break and cause an
	the blade, disconnect the wire
			accident.
	to the spark plug. The blade has
sharp edges. When you hold the blade,			1. Sharpen the blade two times a year or ev-
use gloves or cloth material to protect			ery 25 hours.
your hands.			2. If the blade is on the unit, do not sharpen.
1. Drain the fuel tank.			Remove the blade according to the in-
2. Lift the side of the mower that has the			structions in ”How To Remove The Blade”.
	muffler or spark plug.		3. Clean the blade with a brush, soap, and
3. Use a piece of wood to keep the blade			water. Check the blade. Look for cracks,
	from rotating.		nicks, or other damage. Replace a blade
4.	Remove the bolt that holds the blade with		that is badly worn, bent, or damaged with
			a factory replacement blade.
	a 9/16” (14mm) wrench.
			4. Sharpen the blade with a file. Make sure
			you keep the original beveled cutting edge
			(Figure 24).
			(Continued following page)
		Blade		Blade
		Adapter
	Blade
	Belleville
	Washer
Blade Adapter				File
		Bolt	Screwdriver	Blade is balanced
				when parallel to
		Blade		the ground.
		Belleville Washer
	Bolt	Figure 23	Ground	Figure 24
F-050442L			21