Maintenance.9 - MTD 137-496A Owner's Manual

38" riding mower
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NOTE
A brief break-in period is essential to
ensure
maximum
engine
and
mower
life. This consists of running the engine
at half speed for a period of time re¬
quired to use one tank of gasoline. It
is also recommended to change crank¬
case oil after the first 2 hours of oper¬
ation.
CAUTION
Parking brake MUST be disengaged be¬
fore unit is put into motion.
NOTE
Unit is equipped with separate brake
and clutch pedals. To efficiently stop, it
is necessary to disengage clutch when
applying brakes.
STOPPING THE ENGINE
Turn the ignition key to the left to the OFF position
^
and remove the key to prevent accidental starting.
CAUTION
Gear
changing
should
be
done
only
after the mower has been brought to a
full stop. If the mower is not to be used
for a long period, place the gear shift
lever in NEUTRAL and stop the engine.
DO NOT leave the machine on an in¬
cline.
OPERATING THE CUTTER BLADE
The cutting blades may be engaged while the mower
is moving or standing still. DO NOT engage the cutting
blades abruptly as the sudden belt tension on the pul¬
ley may cause the engine to stall.
WARNING
When the blade drive is engaged, keep
feet and hands away from the discharge
opening and from the blade.
To stop the blades, move the lift and disengagement
lever (figure 9) into the DISENGAGED position. This
raises the deck and disengages the blades.
NOTE
When the machine is used for other than
mowing
operations
the
blade
drive
should be disengaged.
OPERATING THE MOWER
MAINTENANCE
Step 1. Set the desired cutting height.
Step 2. Start the engine as outlined above.
CRANKCASE OIL
To ensure maximum engine performance, perform the
following periodic maintenance:
Step 3. Select gear and shift.
DO NOT force the gear shift lever! If the
lever cannot be moved from NEUTRAL
to one of the drive positons, release the
clutch pedal
slowly, depress it
again,
and then move the gear shift lever as
required.
Step
4.
Once the machine is in motion, remove foot
from the pedal. The mower will now move
ahead or to the rear, and the use of the steer¬
ing wheel will provide directional control.
Step 5. The mower is brought to a stop by pressing
your right foot against the brake pedal and
your IWft foot against the clutch pedal. The
drive belt will be disengaged and the brake
will be applied.
Oil Check
Check the oil level in the crankcase before each use
of the machine and after every five hours of operation.
Oil should be kept between the add and full marks on
the dipstick.
After the first five hours of operating a new engine,
drain the oil (See figure 16.) from the crankcase while
engine is still hot and refill crankcase with new oil;
thereafter change the oil every 25 hours of operation.
This procedure ensures for minimum wear of engine
parts and provides for virtually trouble-free operation.
To change the oil, proceed
as follows:
Step 1. With the machine on level ground, place a
suitable metal container under the oil drain
plug, then remove the drain plug. See figure
14.
9

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