McCulloch M51-150AWR CLASSIC, Operator'S Manual

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To do a check of the fuse
(M53-174WRE CLASSIC,
M53-174ARE CLASSIC)
1. Remove the 2 screws on the battery holder.(Fig. 40 )
2. Turn the battery holder carefully to make sure that
the battery does not fall out.
3. Open the cover on the fuse holder.(Fig. 41 )
4. Examine the fuse. Replace it if it has blown.(Fig. 42 )
5. Put the battery holder back. Make sure that no
cables get caught.
6. Attach the battery holder with the 2 screws.
To change the engine oil
WARNING: Engine oil is very hot directly
after the engine is stopped. Let the engine
become cool before you drain the engine oil.
If you spill engine oil on your skin, clean with
soap and water.
1. Operate the product until the fuel tank is empty.
2. Remove the ignition cable from the spark plug.
3. Remove the oil tank cap.
4. Put a container below the product to collect the
engine oil in.
5. Tilt the product to drain the engine oil from the oil
tank.
6. Fill with new engine oil of the type recommended in
Technical data on page 15
.
7. Do a check of the oil level. See
To do a check of the
oil level on page 13 .
Air filter
An air filter that is used for a long time cannot be fully
cleaned. Replace the air filter at regular intervals.
Note: Always replace a damaged air filter.
To clean the paper filter
1. Remove the air filter cover and remove the paper
filter.
2. Hit the filter against a flat surface to make the
particles fall off.
CAUTION: Do not use solvent or
compressed air to clean the paper filter.
3. Put the air filter back. Make sure that the air filter
fully seals against the air filter holder.
4. Put the air filter cover back.
To clean the foam plastic filter
1. Remove the air filter cover and remove the foam
plastic filter.
2. Clean the foam plastic filter with soap and water.
3. Flush the foam plastic filter in clean water.
4. Squeeze the water from the foam plastic filter and let
it dry.
CAUTION: Do not use compressed air. It
can cause damage to the foam plastic
filter.
5. Lubricate the foam plastic filter with engine oil.
6. Press a clean cloth against the foam plastic filter to
remove unwanted oil.
7. Put the air filter back. Make sure that the air filter
fully seals against the air filter holder.
8. Put the air filter cover back.
To examine the spark plug
CAUTION: Always use the recommended
spark plug type. Incorrect spark plug type
can cause damage to the product.
• Examine the spark plug if the engine is low on
power, is not easy to start or does not operate
correctly at idle speed.
• To decrease the risk of unwanted material on the
spark plug electrodes, obey these instructions:
a) Make sure that the idle speed is correctly
adjusted.
b) Make sure that the fuel mixture is correct.
c) Make sure that the air filter is clean.
• If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, see Technical data on
page 15
.(Fig. 43 )
• Replace the spark plug if it is necessary.
To examine the fuel system
• Examine the fuel tank cap and the seal for the fuel
tank cap to make sure that there are no damages.
• Examine the fuel hose to make sure that there are
no leaks. If the fuel hose is damaged, let a service
agent replace it.
To adjust the clutch wire on
M51-150AWR CLASSIC and
M53-174ARE CLASSIC
If the drive feels slow, it is necessary to adjust the clutch
wire.
1. To increase the drive speed, turn the adjuster screw
counterclockwise.
14 417 - 002 - 17.10.2017