Cleaning And Replacing The Air Filter (Figure W ); Cleaning The Deposit Cap (Figure W1 ); Checking The Spark Plug (Figure Y ); Correct Winter Storage Of The Engine (Or When Not Used For A Long Period Of Time) - Sabo 38-BV Manual Del Operador

The first oil change in a new engine is required after approx. 5 operating hours. Later,
it should be done every 50 operating hours or at least once per season.
Check the oil level regularly. Check the oil level every 8 hours or prior to starting the
engine.
– Before the engine or the device is tilted to drain oil, empty the petrol tank and let
the engine run until it stops due to lack of fuel.
– Stop the engine and remove the spark plug connector (1) Y .
– Close the fuel tap (2) Y2 .
– Change the oil as long as the engine is warm.
– To change the oil, undo the oil drain screw (4) Y1 .
– Tilt the scarifier so that the used oil can drain into a container.
Do not drain used oil into the sewage system or soil; dispose of it according
to the local regulations.
– Position the scarifier straight and insert the oil drain screw (4) again and
tighten Y1 .
– Fill with fresh engine oil (see chapter Checking the oil level and filling with oil,
figure Y1 ).

Cleaning and replacing the air filter (figure W )

IMPORTANT
Never let the engine start or run whilst the air filter is removed.
– Loosen the nut (1) on the air filter cover (2) and remove the cover.
– Remove the fastening nut (3) and remove the filter (4). Remove the pre-filter (5)
from the paper filter element.
– Clean the paper filter element every 25 operating hours.
If slightly dirty, knock the dirt off; if very dirty or damaged, replace it. Do not blast
out the paper filter using compressed air. Do not grease it.
– Clean the pre-filter every 25 operational hours.
Wash the pre-filter in hot water with liquid detergent, rinse it out, press out excess
water and allow it to dry thoroughly in air. Do not lubricate the pre-filter with oil.
– Insert the dry pre-filter on the paper filter element. When doing so, ensure that the
seal (6) on the air filter plate (8) is sitting at the centre of the stud bolt (7).
– Insert the paper filter element with mounted pre-filter onto the stud bolt (7) and air
filter plate (8). Pay attention to ensure that the filter engages safely with the filter
plate. Fasten the filter with the nut (3).
– Put the cover (2) on the air filter and fasten it with the nut (1) on the air filter
plate (8).
In the case of unfavourable operation conditions (severe formation of dust), cleaning
is required after every scarifying procedure. Replace the paper filter element and
pre-filter annually.
(Please see original spare parts and accessories for order no. of filter element and
pre-filter)

Cleaning the deposit cap (figure W1 )

– Close the fuel tap (1).
– Remove the deposit cap (3) and the O-ring (2).
– Clean the deposit cap (3) and the O-ring (2) every 100 operating hours or
every 6 months with a non-flammable solvent and then dry them.
– Place the O-ring (2) in the fuel valve. Install the deposit cap (3). Tighten the
deposit cap (3).
– Open the fuel tap (1) and check for leaks. If there is a leak, replace the
O-ring (2).

Checking the spark plug (figure Y )

To check for wear, remove the spark plug connector (1) and unscrew the spark plug (2).
If the electrode is badly worn, the spark plug must be replaced as a matter of course
(for order no. see original spare parts list and accessories).
Otherwise it is sufficient to clean the spark plug with a steel brush and set the electrode
gap to between 0.70 and 0.80 mm. Screw the spark plug (pay attention to sealing ring)
into the engine by hand and tighten using the socket wrench. Press on spark plug
connector. Replace the spark plug annually.
Correct winter storage of the engine (or when not used for a long period
of time)
– Empty the petrol tank and let the engine run until it stops due to lack of fuel.
– Place the petrol collection container with hopper under the carburettor W2 .
– Remove the carburettor drain plug (4) and deposit cap (3) and open the fuel tap
(1) W2 .
– Once all the petrol has drained out, tighten the deposit cap (3) and carburettor
drain plug (4). Ensure that the O-ring (2) and seal (5) are both mounted W2 .
– Stop the engine and remove the spark plug connector (1) Y .
– Close the fuel tap (2) Y2 .
– Drain the oil and fill with fresh motor oil as long as the engine is still warm
(see the chapter Oil change).
– Remove grass and mowing deposits from the cylinder and cylinder ribs, under the
engine cover (7) and around the silencer.
– Always keep the device in a clean state in a closed, dry room and inaccessible
to children.

19 TROUBLESHOOTING

Faults Possible causes
Cable is not connected
Engine does not start
to the short-circuit cable
at the engine.
Safety grip not pulled
towards the top guide
tube.
Fuel tap closed.
Choke lever on the
engine in the operating
position.
Fuel tank is empty.
Spark plug connector
loose.
Spark plug defective or
dirty or electrode burnt
out.
Excessive petrol
supply to engine
(spark plug wet).
Air filter soiled.
Fuel tank is empty.
The engine stops
Oil level too low.
Device tipped too far to
the side.
Air filter soiled.
Engine power
decreasing
Spark plug clogged with
soot.
Fuel old or soiled
Air filter soiled.
Engine runs irregularly
Spark plug clogged with
soot.
Engine fixing loose
Extreme vibration
Ribbed V-belt defective
Cutter shaft will not
turn
In case of faults and defects which have not been listed here, please contact the
nearest authorised workshop.
Repairs which require specialised knowledge should only be performed by a qualified
37
Remedy
Connect the connector
bushing at the end of the
short-circuit cable to both free
ends of the short-circuit cable
at the engine N1 .
Pull the safety grip towards
the top guide bar and keep
hold of it A2 .
Open the fuel tap S2 .
Place the choke lever on the
engine in position
"Choke" S2 (see "Starting
the engine").
Fill the fuel tank with clean
and fresh fuel.
Press on spark plug
connector or have it checked
by an authorised workshop.
Replace or clean the spark
plug, set the electrode gap to
between 0.70 mm and
0.80 mm Y .
Have it checked by an
authorised workshop.
Clean or replace the air filter
insert W .
Fill the fuel tank with clean
and fresh fuel.
Refill with oil.
This engine is fitted with an
oil level sensor. If the oil level
is too low, the engine is
switched off.
Do not tip the machine too far
to the side.
This engine is fitted with an
oil level sensor. If the oil level
is too low, the engine is
switched off.
Clean or replace the air filter
insert W .
Have it checked by an
authorised workshop.
Empty the petrol tank and fill
with fresh fuel.
Clean or replace the air filter
insert W .
Have it checked by an
authorised workshop.
Have it checked by an
authorised workshop.
Have it checked and replaced
if necessary by an authorised
specialist workshop.