Husqvarna T 4000 Petrol Workshop Manual page 12

• To clean the prefilter with an external dust extractor,
do these steps:
a) Remove the top cover. Refer to
top cover on page 11 .
b) Lift out the prefilter.
c) Clean the outer surface of the prefilter. Install a
soft brush on the external dust extractor to
prevent damage to the prefilter.
• To clean the prefilter with the jet pulse cleaning kit,
do these steps:
a) Start the product.
b) Close the inlet valve to seal the inlet.
c) Wait for 5 seconds for the product to increase
the pressure.
d) Push and hold the arm to the jet pulse cleaning
kit for 5 seconds.
e) Wait for 5 seconds again, and then push and
hold the arm to the jet pulse cleaning kit for 5
seconds. Do this step again and again until you
have pushed the jet pulse cleaning kit 5 times.
• Replace the prefilter if the suction does not become
better when you clean the prefilter. Refer to
replace the prefilter on page 12 .
6.4.2 To replace the prefilter
Only use Husqvarna prefilter.
WARNING: Use approved protective gloves
when you replace the prefilter.
1. Remove the top cover. Refer to
cover on page 11 .
2. Carefully lift the prefilter into a clean plastic bag.
3. Dispose the plastic bag correctly. Refer to local
regulations.
4. Install a new prefilter in the tank unit.
5. Install the top cover. Refer to
on page 11 .
12 - Repair and servicing
To remove the
To
To remove the top
To install the top cover
6.4.3 To replace the HEPA filter
Only use Husqvarna HEPA filter.
WARNING: Use approved protective gloves
when you replace the HEPA filter.
WARNING: Make sure that there are no holes in
the HEPA filter. Holes in the HEPA filter can
cause a health risk.
CAUTION: Do not clean a HEPA filter. This
causes damage to the HEPA filter.
CAUTION: Make sure to not touch the inner
surface of the HEPA filter. This cause damage
to the HEPA filter.
1. Loosen the clamps on the HEPA filter cover.
2. Loosen the clamp rings and remove the hose from
the HEPA filter cover.
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