MTD 112-638A - Manual (Page 11)

Cutting height will be raised as front and rear
levers are lowered. Cutting height will be lowered
as front and rear levers are raised. Ail wheels must
be positioned at the same height.
For rough or uneven lawns, move the wheels to a
position which will give a higher cutting height.
FIGURE 19.
THROTTLE
If adjustment becomes necessary, the throttle
control wire assembly can be reset as follows:
1. Loosen, but do not remove, the screw secur­
ing throttle control wire assembly at engine.
See figure 20.
FIGURE 20.
2. Move throttle control lever on handle to
“FAST” position.
3. Move lever to which control wire is fastened
at engine to full open position. Retighten
screw
to secure throttle control wire
assembly.
CARBURETOR ADJUSTMENTS
Refer to the engine manual for carburetor adjust­
ment information.
^ WARNING
\
If any adjustments are made to the
engine while the engine is running
(e.g.
carburetor), disengage all
clutches and blades. Keep clear of
all moving parts. Be careful of
heated surfaces and muffler.
LUBRICATION
IMPORTANT
Always stop engine and disconnect
spark plug wire before cleaning,
lubricating or doing any kind of
work on lawn mower.
Wheels—The wheel bearings should be lubri­
cated at least once a season. 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 lubri­
cant is available. Order part number 737-0170.
Engine oil may also be used.
Engine—Follow engine manual for lubrication in­
structions.
Throttle—Periodically lubricate throttle control
lever and throttle wire assembly with a few drops
of light oil for ease of operation.
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.
MAINTENANCE
CUTTING BLADE
A. Removal 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.
11