Replacing Air Filter - Husqvarna W21K, W21SK, W21SBK, W53SBEK, W53SEK, W21KC, W21SKC, W21SBKC Operator's Manual

Replacing Air Filter

If the engine seems weak or runs unevenly,
the air filter may be clogged. If run with a dirty
air filter, the spark plugs can become fouled,
disturbing operation.
For this reason, it is important to replace the
air filter regularly (see the heading
Maintenance Schedule for the proper service
interval).
To clean/replace the air filter:
WARNING!
Allow the exhaust system to
cool before performing
service. Risk for burns.
IMPORTANT INFORMATION
Operating the engine without an air filter,
or with a damaged air filter, will allow dirt
to enter the engine, causing rapid engine
wear. This type of damage is not covered
by the Distributor's Limited Warranty.
Inspection
Push up latches on the sides of the air
cleaner case. Remove the air cleaner cover
and inspect the filter elements. Clean or
replace dirty filter elements. Always replace
damaged filter elements.
1. Remove the paper and foam elements.
2. Inspect both air filter elements and
replace them if they are damaged.
Always replace the paper filter element
at the scheduled interval (200 hours).
3. To clean the foam element wash in
detergent and warm water, and let the
element air-dry thoroughly before
installing it.
4. To clean the paper element, tap it gently
on a flat surface to remove dust.
5. Clean the housing with detergent and
water and dry thoroughly.
MAINTENANCE
IMPORTANT INFORMATION
Do not use compressed air to clean the
paper element. Do not oil the paper or
foam elements
1
2
3
Air Filter Assembly
1. Air filter cover
2. Paper filter
3. Foam filter
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