Murray MT200 Manual Del Operador página 16

3. Use a blade removal tool (not provided) to prevent the
blade from turning.
4. Loosen the blade nut by turning it counterclockwise (as
viewed from bottom of the mower) using a 24 mm
wrench or socket (not provided).
5. Remove the blade nut and blade. (Fig. 33)
6. When replacing or re-installing the blade, be sure to
install the blade with the side with a part number
stamped in it facing the ground
7. Thread the blade nut on the shaft and finger tighten.
8. Torque the blade nut down clockwise using a torque
wrench (not provided) to ensure the bolt is properly
tightened. The recommended torque for the blade nut is
70-85 ft lbs.
WARNING: Ensure blade is properly seated and the
blade nut is tightened to the torque specifications above.
Failure to properly attach the blade could cause it to
come loose and result in possible serious personal injury.
9. Repeat with the second blade.
Sharping the Blade
1. To properly sharpen the cutting blades, remove equal
amounts of metal from both ends of the blades along the
cutting edges. Always grind each cutting blade edge
equally to maintain proper blade balance.
2. Test the blade's balance using a blade balancer
(not provided). Grind metal from the heavy side until it
balances evenly.
WARNING: A poorly balanced blade will cause
excessive vibration, may damage the tractor, and
result in personal injury.
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Checking the Tire Pressure
For the correct traction and the best mowing performance,
make sure that the front tires are inflated to 14 psi and the
rear tires inflated to 10 psi. Also, see "Tire Pressure" in the
Specifications section.
NOTICE: There can be a difference in tire inflation pressure
from the "Maximum Inflation" shown on the side of the
tires.
Battery Maintenance
Replacing the Battery and Cleaning the
Battery and Battery Cables
WARNING: When you remove or install
battery cables, always disconnect the NEGATIVE (black)
cable FIRST and reconnect it LAST. If not done in this order,
the positive terminal can be shorted to the frame by a tool.
NOTICE: DO NOT remove or connect the battery cable while
the engine is ON.
1. STOP the engine. Remove the key.
2. Disconnect the NEGATIVE (-) cables from the battery first.
(Fig. 34)
3. Disconnect the POSITIVE (+) cables from the battery last.
4. Clean the battery surface with baking soda and water.
5. Use a wire brush and terminal cleaner to clean the
battery terminals and cable ends.
6. Lubricate the battery terminals with petroleum jelly or
non-conducting grease.
7. Install the battery.
8. Connect the POSITIVE (+) cables to the battery first.
9. Connect the NEGATIVE (-) cables to the battery last.
MT200 LAWN TRACTOR
Fig. 34
Charging the Battery
WARNING: Keep open flames and sparks away
from the battery. Gasses from the battery are very
explosive.
A dead battery or one too weak to start the engine can be
the result of a defect in the charging system or other
electrical components. If there are doubts about the cause
of the problem, see an Authorized Service center.
MT200 LAWN TRACTOR
Adjusting the Transaxle Brake
The transaxle is equipped with a brake rotor and brake
pads. Over time the brake pads will wear, and it will be
necessary to adjust the brake to ensure the brake/parking
brake works properly. If you notice that the unit doesn't
stop as quickly as it once did or the tractor does not stay in
place when the parking brake is engaged, the transaxle
brake may need adjusting.
a c
b
Fig. 35
WARNING: Stop the engine, park the tractor on level
ground, disengage the parking brake, and remove the key.
Make sure the brake rotor is cool before adjusting.
1. Remove the right rear tire to allow easy access to the
brake.
2. While rocking the brake rotor (a) back and forth slowly
tighten nut (b) until it's not possible to move the brake
rotor. (Fig. 35)
3. Loosen nut (b) 2/3 turn and leave as the final setting.
4. As an alternative to a 2/3 turn, use a 0.5mm feeler gauge
to set the brake pad 0.5mm off the brake rotor.
5. First loosen the nut (b).
6. Insert a 0.5mm feeler gauge (c), from the side, into the
gap between the brake rotor (a) and brake pad.
7. Tighten the nut until the 0.5mm feeler gauge is snug
between the brake rotor and brake pad but can still be
removed.
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