Spark Plug; Air Intake - Stiga PRO 25 Instrucciones De Uso

5.9.4 Cleaning
If the battery terminals are coated with oxide, they
should be cleaned. Clean the battery terminals with
a wire brush and lubricate them with terminal
grease.
5.10 AIR FILTER, ENGINE
5.10.1 Air filter (Pro16, Pro20)
The pre-filter (foam filter) must be cleaned/re-
placed after 25 hours of operation.
The air filter (paper filter) must be cleaned/re-
placed after 100 hours of operation.
NOTE! The filters should be cleaned/replaced
more often if the machine operates on dusty
ground.
Remove/install the air filters as follows.
1. Clean carefully around the air filter cover.
2. Dismantle the air filter cover (18:A) by remov-
ing the two clamps.
3. Dismantle the filter assembly (18:B). The pre-
filter is placed over the air filter. Make sure that
no dirt gets into the carburettor. Clean the air fil-
ter housing.
4. Clean the paper filter by tapping it gently
against a flat surface. If the filter is very dirty,
replace it.
5. Clean the pre-filter. If the filter is very dirty, re-
place it.
6. Assemble in the reverse order.
Compressed air or petroleum-based solvents such
as kerosene may not be used for cleaning the paper
filter insert. This will damage the filter.
5.10.2 Air filter (Pro25)
The air filter (paper filter) must be cleaned/re-
placed after 100 hours of operation.
NOTE! The filters should be cleaned/replaced
more often if the machine operates on dusty
ground.
Remove/install the air filters as follows.
1. Dismantle the air filter cover (19:A) by remov-
ing the two clamps.
2. Dismantle the filters. The pre-filter (19:B) is
placed over the air filter (19:C). Make sure that
no dirt gets into the carburettor. Clean the air fil-
ter housing.
3. Wash the pre-filter in liquid detergent and wa-
ter. Squeeze dry. Pour a little oil on the filter and
squeeze in the oil.
5. Assemble in the reverse order.
Petroleum-based solvents such as kerosene may
not be used for cleaning the paper filter insert.
These solvents can destroy the filter.
Do not use compressed air for cleaning the paper
filter insert. The paper filter insert must not be
oiled.
ENGLISH
5.10.3 Air filter (Pro Svan)
Clean the air filter every 3 months or after every 50
hours of operation, whichever comes first.
Clean the paper filter insert once a year or after
every 200 hours of operation, whichever comes
first.
Note! Both filters should be cleaned more often if
the machine operates on dusty ground.
1. Remove the protective cover of the air filter
(fig. 18).
2. Dismantle the paper filter insert and the foam
pre-filter. Make sure that no dirt gets into the
carburettor. Clean the air filter housing.
3. Wash the pre-filter in liquid detergent and wa-
ter. Squeeze dry. Pour a little oil on the filter and
squeeze in the oil.
4. Clean the paper filter insert as follows: Knock it
lightly against a flat surface. If the filter is very
dirty, change it.
5. Assemble in the reverse order.
Petroleum-based solvents such as kerosene may
not be used for cleaning the paper filter insert.
These solvents can destroy the filter.
Do not use compressed air for cleaning the paper
filter insert. The paper filter insert must not be
oiled.

5.11 SPARK PLUG

The spark plug(s) must be replaced every 200
hours of operation (=at every other basic service).
Before disconnecting the spark plug, clean around
its mounting.
Spark plug:
Pro16, Pro20: Champion RC12YC or equivalent.
Pro25: NGK ZFR5F
Pro Svan: NGK BPR5ES or DENSO W16EPR-U
Electrode distance: 0.75 mm.

5.12 AIR INTAKE

See 9-11:W. The engine is air-cooled. A blocked
cooling system can damage the engine. Clean the
engine's air intake after 50 hours of operation.
More meticulous cleaning of the cooling system is
carried out during each basic service.
EN
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