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McCulloch B33 PS Manual

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found in this manual. Speak to an approved service
center about other maintenance work not found in this
manual.
Daily maintenance
• Clean the external surfaces.
• Clean the air filter. Replace if necessary.
• Check the harness.
• Check the throttle trigger lock and the throttle
function.
• Check the handle and the handle bar.
• Check the stop switch.
• Check the guards.
• Check the cutting attachment for damage or cracks.
• Replace a damaged cutting attachment.
• Lubricate the cutting blades (extended hedge
trimmer attachment).
• Check the trimmer head.
• Examine the idle speed.
• Examine for fuel leaks.
Weekly maintenance
• Examine the starter rope handle and the starter
rope.
• Examine the bevel gear grease.
• Clean the outside of the carburettor and its adjacent
areas.
• Clean the outside of the spark plug. Remove it and
check the electrode gap. Adjust the gap or replace
the spark plug. Check that the spark plug is fitted
with a suppressor.
Monthly maintenance
• Clean the cooling system.
• Examine the fuel filter.
• Examine the fuel hose for damage.
• Examine all cables and connections.
• Examine the fuel filter.
To adjust the carburetor
The basic carburetor settings are adjusted during testing
at the factory. Adjustment must be carried out by a
trained technician.
To do a check of the muffler
WARNING:
Do not use a product that has a
defective muffler. Always replace a defective
muffler.
WARNING: Mufflers with catalytic
converters get very hot during operation.
Risk of burn or fire.
WARNING: The muffler decrease the noise
level and point the exhaust gases from the
operator. The exhaust gases are hot and
can contain sparks. Risk of fire.
CAUTION: The spark arrestor spark arrester
screen must be replaced if it is damaged. Do
not use a product if the spark arrestor spark
arrester screen on the muffler is missing or
defective.
CAUTION: If the spark arrestor spark
arrester screen is blocked the product will
too hot. This will cause damage to the
cylinder and piston.
1. Make sure that the muffler is not damaged.
2. Make sure that the muffler is correctly attached to
the product.
3. Some mufflers have a special spark arrestor spark
arrester screen. Clean the spark arrestor spark
arrester screen minimum one a week if your product
has this type of muffler. Use a wire brush. (Fig. 51)
To clean/do maintenance on the
cooling system
This product has a cooling system. A dirty or blocked
cooling system can make the product too hot which can
damage to the piston and cylinder. Check and clean the
cooling system with a brush one time each week or
more frequently in demanding conditions. The cooling
system consists of cooling fins on the cylinder (1) and air
intake (2).
(Fig. 52)
To clean the air filter
1. Remove the air filter cover and remove the air filter.
(Fig. 53)
2. Clean the air filter with warm soap water. Make sure
that the air filter is dry before you install it.
3. Replace the air filter if it is too dirty to fully clean it.
Always replace a damaged air filter.
4. If your product has a foam air filter, apply air filter oil.
Only apply air filter oil to a foam filter. Do not apply
oil to a felt filter.
Fuel filter
When the engine runs short of fuel, make sure that the
air hole in the fuel tank cap and the fuel filter (A) are
clean.
(Fig. 54)
To add grease to the bevel gear
Make sure that the bevel gear is filled 3/4 full with bevel
gear grease.
(Fig. 55)
860 - 001 - 28.10.2018
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