General Recommendations; Inspection - Murray LT155420 Manual De Instrucciones

General Recommendations

1. The owner's responsibility is to maintain this
product. This will extend the life of the product
and is also necessary to maintain warranty
coverage.
2. Check the spark plug, drive brake, lubricate the
unit, and clean the air filter once a year.
3. Check the fasteners. Make sure all fasteners are
tight.
4. Follow the Maintenance section to keep the unit
in good operating condition.
WARNING: Before you make an inspection,
adjustment, or repair to the unit, disconnect
the wire to the spark plug. Remove the wire
from the spark plug to prevent the engine
from starting by accident.
NOTE: Torque is measured in foot pounds (metric Nm).
This measurement describes how tight a nut or bolt
must be. The torque is measured with a torque wrench.

Inspection

How to Check the Muffler
Check the muffler every 50 hours. Make sure the
muffler is correctly mounted and is not loose. If the
muffler is worn or burnt, replace with a new muffler. A
worn muffler is a fire hazard and can also damage the
engine.
If you mount a spark arrester to the muffler, also
check the spark arrester when you check the muffler.
If the spark arrester is worn or damaged, replace it
with a new spark arrester. See your nearest
authorized service center for a spark arrester.
Inspect Blade
WARNING: Before you inspect or remove the
blade, disconnect the wire to the spark plug. If
the blade hits an object, stop the engine.
Check the unit for damage. The blade has
sharp edges. When you hold the blade, use
gloves or cloth material to protect your hands.
If you keep the blade sharp and inspect the blade for
damage, the blade will cut better and be more safe to
operate. Frequently check the blade for excessive
wear, cracks, or other damage. Frequently check the
nut that holds the blade. Keep the nut tight. If the
blade hits an object, stop the engine. Disconnect the
wire to the spark plug. See if the blade is bent or
damaged. Check the blade adapter for damage.
Before you operate the unit, replace damaged parts
with original equipment parts. See the authorized
service center in your area. Every three years, have
an authorized service person inspect the blade or
replace the old blade with an original equipment part.
English
How to Remove and Install the Blade
1. Remove the mower housing. See the instructions
on "How To Remove The Mower Housing".
2. Use a piece of wood to keep the blade from
rotating.
3. Remove the nut that holds the blade (Figure 17).
A
B
C
D
Figure 17: Removing the blade
A - Hi-lift edge up
B - Blade
C - Belleville washer
D - Nut
E - Washer
F - Blade adapter
G - Mandrel
4. Check the blade and the blade adapter
according to the instructions for "Inspect Blade".
Replace a badly worn or damaged blade with an
original equipment blade. See an authorized
service center in your area.
5. Clean the top and bottom of the mower housing.
Remove all the grass and debris.
6. Mount the blade and blade adapter on the
mandrel (Figure 17).
7. Mount the blade so that the hi-lift edges are up.
If the blade is upside down, the blade will not cut
correctly and can cause an accident.
8. Fasten the blade with the original washers and
nut. Make sure the outside rim of the Belleville
washer is against the blade (Figure 18).
G
F
E
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