MTD 110-300R000 - Manual (Page 12)

CARBURETOR ADJUSTMENTS
A
MAINTENANCE
WARNING: If any adjustments are made to
the engine while the engine is running (e.g.
carburetor), keep clear of ail movinri parts.
Be carefui of heated surfaces and muffier.
JUlinor carburetor adjustments may be required to
compensate for differences in fuei, temperature,
altitude and load. To adjust carburetor, refe' to the
separate engine manual packed with your mower.
NOTE: A dirty air cleaner will cause an engino to run
rough. Be certain air cleaner is clean and atta ched to
the carburetor before adjusting carburetor. Reft tr to the
separate engine manud.
LUBRICATION
A
WARNING: Always stop engine and
disconnect spark plug wire before clean­
ing, lubricating or doirig 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 directions.
FIGURE 18.
Discharge Chute Deflector— The torsion spi ing and
pivot point should be lubricated periodically v ith light
oil to prevent any rust or binding. Deflector mi ist work
freely.
Wheels —Mower may be provided with ball bearing
wheels. Lubricate at least once a season with light oil.
Also, if the wheels are removed for any reason,
lubricate the surface of the axle bolt and the ir ner sur­
face of the wheel with light oil. A 4 oz. plast c bottle
of light oil lubricant is available. Order part number
737-0170. Engine oil may also be used.
Engine —Follow engine manual for lubricition in­
structions.
Throttle— Periodically lubricate throttle cont ol lever
and throttle wire assembly with a few drops о light oil
for ease of operation.
A WARNING: Be sure to disconnect and
ground the spark plug wire before perform­
ing any repairs or maintenance.
NOTE: When tipping the unit, empty the fuel tank and
keep engine spark plug side up.
TROUBLE SHOOTING
Refer to page 16 of this manual for trouble shooting
information.
CUTTING BLADE
When removing the cutting blade for sharpening or
replacement, protect hands by using heavy gloves or
a rag to grasp the cutting blade. Remove the bolt and
bell washer which hold 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 WARNING: Periodically inspect the blade
adapter for cracks, especially if you strike
a foreign object. Replace when necessary.
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 unbalanced 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.
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.
When replacing the blade, be sure to Install the blade
with the side of the blade marked “Bottom” (or with
part number) facing the ground when the mower is in
the operating position.
Blade Mounting Torque
Center Bolt and Blade Adapter Bolts:
375 in. lb. min., 450 in. lb. max.
12