Takeuchi TB014 Werkstatt-Handbuch Seite 494

4)Bleed the fuel system. Refer to 2.2.3.(3)
IMPORTANT:
Be sure to use genuine Yanmar part. Otherwise, it
results in engine damage, uneven engine
performance and decline of engine life.
And, these troubles are outside the guarantee.
(3) Air cleaner cleaning and element replacement
Refer to 2.2.4 (5).
Replace the air cleaner element periodically even if it is not damaged or dirty.
When replacing the element, clean inside of the dust pan at the time.
If having the air cleaner with double elements, do not remove the inner element. If the engine output is still not
recover (or the dust indicator still actuates if having the air cleaner with a dust indicator) even though the outer
element has replaced with new one, replace the inner element with new one.
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2. Inspection and adjustment