MTD Series 521 warranty Maintaining, Servicing Your Edger, Lubrication, Replacing the Edger Blade

Models: Series 521

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Maintaining

6

Maintaining

&Servicing Your Edger

WARNING

Disconnect the spark plug wire and ground against the engine before performing any adjustment, repairs or mainte-

nance.

The edger blade is sharp. Wear leather work gloves

to protect your hands when working around the edger blade.

Disconnect the spark plug wire and ground against engine before performing the following steps.

NOTE: Specifications are subject to change without notification or obligation.

Images my not reflect your exact model and are for reference purposes only.

 

 

WARNING: Disconnect the spark plug

 

 

wire and ground against the engine

 

 

before performing any adjustment,

 

 

repairs or maintenance.

 

 

Lubrication

 

 

Engine

 

 

Refer to the Engine Manual packed with your edger for a detailed

 

 

description of all engine-related service specifications.

 

 

Wheels

 

 

Lubricate the wheels and bearings at least once a season

 

 

with a light oil. Also if the wheels are removed for any

 

 

reason, lubricate the surface of the axle bolt and the inner

 

 

surface of the wheel with light oil.

 

 

Pivot Points

 

 

Lubricate the pivot points on the blade control bail, blade

 

 

depth control lever, and if applicable, the blade adjustment

 

 

lever, and curb height adjustment lever with light oil at

 

Lubricate
least once a season.

 

Bearing Block

 

 

 

 

Lubricate the bearing block every 25 hours or at least

Figure 6–1

 

once a season. Simply apply oil at each end of the cover

 

plate. See Fig. 6–1.

 

 

Replacing the Edger Blade

 

 

WARNING: The edger blade is sharp.

 

 

Wear leather work gloves to protect

 

 

your hands when working around the

 

 

edger blade.

 

 

WARNING: Disconnect the spark plug

 

 

wire and ground against engine before

 

 

performing the following steps.

1.Use two wrenches (one wrench to prevent the hex bolt head from spinning and the other to remove the flange nut) to remove the edger blade. Refer to Fig. 6–2.

2.Remove and discard the edger blade but retain the flange nut.

3.Install the replacement edger blade and the flange nut removed earlier.

IMPORTANT: Use a torque wrench to tighten the flange nut to between 37 foot-lbs. and 50 foot-lbs.

IMPORTANT: Make certain that the drive belt is seated correctly on the blade spindle and that it is riding smoothly on the spindle sheaves and is not pinched between them. Repeat the first three steps if the belt is pinched.

Figure 6–2

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MTD Series 521 warranty Maintaining, Servicing Your Edger, Lubrication, Replacing the Edger Blade, repairs or maintenance