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9
NOTE
Lubrication should be applied at 20 hour intervals and more
frequently with heavy use.
Fuel fi lter (Fig. 15)
Remove the fuel fi lter from the fuel tank and thoroughly wash it in
solvent. After that, push the fi lter into the tank completely.
Fig. 15
NOTE
If the fi lter is hard due to dust and dirt, replace it.
Cleaning the cylinder fi ns (Fig. 16)
When leaves get caught between cylinder fi ns (8), the engine may
overheat, resulting in lower output. To avoid this, always keep
cylinder fi ns and fan case clean.
Every 100 operating hours, or once a year (more often if conditions
require), clean fi ns and external surfaces of engine of dust, dirt and
oil deposits which can contribute to improper cooling.
8
Fig. 16
Cleaning the muffl er (Fig. 17)
Remove the muffl er and spark arrestor (if so equipped), and clean
out any excess carbon from the exhaust port or muffl er inlet every
100 hours of operation.
Fig. 17
For long-term storage
Drain all fuel from the fuel tank. Start and let engine run until it stops.
Repair any damage which has resulted from use. Clean the unit with
a clean rag, or high pressure air hose. Put a few drops of two-cycle
engine oil into the cylinder through the spark plug hole, and spin the
engine over several times to distribute oil. Cover the unit and store
it in a dry area.
Maintenance schedule
Below you will fi nd some general maintenance instructions. For
further information please contact your Hitachi dealer.
Daily maintenance
○ Clean the exterior of the hedge trimmer.
○ Check the blade guard for damage or cracks. Change the guard
in case of impacts or cracks.
○ Check that the blade is sharp, and without cracks.
○ Check that the blade nut is suffi ciently tightened.
○ Make sure that the blade transport guard is undamaged and
that it can be securely fi tted.
○ Check that nuts and screws are suffi ciently tightened.
Weekly maintenance
○ Check the starter, especially cord and return spring.
○ Clean the exterior of the spark plug.
○ Remove it and check the electrode gap. Adjust it to 0.6 mm, or
change the spark plug.
○ Clean the cooling fi ns on the cylinder and check that the air
intake at the starter is not clogged.
○ Check gear case is fi lled with grease.
○ Clean the air fi lter.
Monthly maintenance
○ Rinse the fuel tank with gasoline.
○ Clean the exterior of the carburetor and the space around it.
○ Clean the fan and the space around it.