MTD 330 - Maintenance; Cutting Blade

Refer to the separate engine manual packed with
your mower for carburetor adjustment informa¬
tion.
LUBRICATION
IMPORTANT
Always stop engine and disconnect
spark plug wire before cleaning,
lubricating or doing any kind of
work on lawn mower.
Blade Control —Lubricate the pivot points on the
blade control handle and the brake cable at least
once a season with light oil. See figure 18. The
blade control must operate freely in both direc¬
tions.
Brake
Cable
FIGURE 18.
Discharge Chute Door Mechanism — The torsion
spring and pivot point should be lubricated
periodically with light oil to prevent any rust or
binding. Door must work freely.
Wheels— The wheels require no lubrication.
However, 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. A 4 oz.
plastic bottle of light oil lubricant is available.
Order part number 737-0170. Engine oil may also
be used.
Engine— F ollow engine manual for lubrication in¬
structions.
Throttle— P eriodically lubricate throttle control
lever and throttle wire assembly with a few drops
of light oil for ease of operation.
MAINTENANCE
CAUTION
When tipping the unit, empty the fuel
tank and keep engine spark plug side
up.
CUTTING BLADE
A. R emoval for Sharpening or Replacement
^ WARNING J
Be sure to disconnect and ground
the spark plug wire before working
on the cutting blade to prevent
accidental engine starting.
Remove the large bolt and lock washer which
holds the blade and adapter to the engine
crankshaft. Remove the blade and adapter from
the crankshaft.
If the blade or blade adapter needs replacing,
remove the two small bolts, lock washers and nuts
which hold the blade to the adapter.
A
CAUTION
Periodically inspect the blade adapt¬
er for cracks, especially if you strike
a foreign object. Replace when nec¬
essary.
B. S harpening
Remove the cutting blade by following the direc¬
tions of the preceding section.
When sharpening the blade, follow the original
angle of grind as a guide. It is extremely important
that each cutting edge receives an equal amount
of grinding to prevent an unbalanced blade. An
unblanced blade will cause excessive vibration
when rotating at high speeds, may cause damage
to the mower and could break, causing personal
injury.
It is recommended that the blade always be
removed from the adapter for the best test of
balance. The blade can be tested by balancing it
on a round shaft screwdriver. Remove metal from
the heavy side until it balances evenly.
C. R eassembly
Before reassembling the blade and the blade
adapter to the unit, lubricate the engine
crankshaft and the inner surface of the blade
adapter with light oil. Lubricating the bolt holes,
bolts and inner surface of the nuts with light oil is
also recommended. A 4 oz. plastic bottle of light
oil lubricant is available. Order part number
737-0170. Engine oil may also be used.
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