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IMPORTANT
Never use a pressure cleaner or ordinary water jet to clean the motor. Damages
or expensive repairs can be the consequence of such action.
Oil change (Illustration Y1 + Y2 + Y )
NOTE
For environmental reasons, we recommend that the oil change is performed by
an authorised workshop.
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 equipment is tilted to drain oil, empty the petrol tank and
let the engine to 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 .
–
Renew 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 motor oil (see the chapter Check the oil level and fill with oil,
Figure Y1 ).
Cleaning and replacing the air filter (Illustration 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 and fit both on the stud bolt (6)
and air filter plate (7). 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
(7).
In the case of unfavorable 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)
Checking the spark plug (Illustration 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.
(Order no. see original spare parts list and accessories).
Otherwise it is sufficient to clean the spark plug and set the electrode gap to 0.76 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 to 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 .
–
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 hood and around the silencer.
–
Always keep the equipment in a clean state in a closed, dry room and inaccessible
to children.
18 TROUBLESHOOTING
Fault
Possible cause
Safety grip not pressed
Engine does not start
down.
Petrol 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 dirty
Air filter soiled.
Engine power
decreasing
Spark plug clogged with
soot.
Fuel old or soiled
Air filter dirty.
Engine runs irregularly
Spark plug contaminated
with soot.
Engine fastening loose.
Extreme vibration
V-belt defective
Blade shaft will not
turn
In case of faults and defects which have not been listed here, please contact the
nearest authorized dealer.
Repairs which require specialized knowledge should only be performed by a qualified
expert. Your authorized dealer will naturally also be glad to help if you do not wish to
perform the maintenance work described here yourself.
19 TECHNICAL DATA
Engine
Motor
Capacity
Rotation speed
Power of Device
Electrode gap
Fuel
Tank capacity
Lubricating oil
Oil quantity
*
Below 4°C the use of SAE 30 will result in hard starting.
**
Above 27°C the use of 10W-30 may cause increased oil consumption. Check oil
level more frequently.
9
Remedy
Press safety grip to upper
part of handlebar D .
Open the petrol tap S2 .
Place the choke lever on the
engine to
"Choke"
position S2 (see "Starting
the engine").
Fill fuel tank with clean and
fresh fuel.
Press on spark plug
connector or have it checked
by an authorized dealer.
Replace or clean spark plug,
set electrode gap to 0.76 mm
Y .
Have it checked by an
authorized dealer.
Clean or replace air filter
insert W .
Clean or replace the air filter
insert W .
Have it checked by an
authorised workshop.
Empty the petrol tank and fill
with fresh petrol.
Clean or replace air filter
insert W .
Have it cleaned by an
authorized dealer.
Have it checked by an
authorized dealer
Have it checked and replaced
if necessary by an authorized
specialist workshop.
B&S 4-stroke motor, 950 Series
208 cm
3
3300 min
-1
3.7 kW
0.76 mm
Unleaded standard petrol, with
max.10% ethanol
approx. 3.1 litres
SAE 30 *
SAE 10W30 **
or similar brand name oil,
minimum quality SF
0.55 – 0.6 litres
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