MTD 550 Serie Manual Del Operador página 12

Maintenance& Adjustments
Maintenance
i_ll WARNING! Disconnect the spark plug wire and
ground it against the engine before performing any
adjustment, repairs or maintenance.
Engine
Refer to the Engine Operator's Manual packed with your
edger for a detailed description of all engine-related service
specifications.
Edger Blade
ill_ll WARNING! The edger blade is sharp. Wear leather
work gloves to protect your hands when working
around the edger blade.
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. 6-1.
Lubrication
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.
PivotPoints
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 least once a season.
Bearing Block
Lubricate the bearing block every 25 hours or at least once a
season. Simply apply oil at each end of the cover plate. See Fig.
6-2.
2_
3.
Edger
Figure 6=1
Remove and discard the edger blade but retain the flange
nut.
Install the replacement edger blade and the flange nut
removed earlier. Use a torque wrench to tighten the flange
nut to between 37 foot-lbs, and 50 foot-lbs.
NOTE: 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