![background image](http://html1.mh-extra.com/html/sabo/53-pro-m-vario/53-pro-m-vario_operators-manual_3208260045.webp)
11
Cleaning and replacing the air filter (Illustration W )
IMPORTANT
Never let the engine start or run whilst the air filter is removed.
SA322020
–
Open the cover (1), pull down and out and remove.
–
Remove the paper filter insert (2) and pre-filter (3). To remove the pre-filter from
the cover, remove the grid (4) first.
–
Clean the paper filter insert every 50 operating hours
Knock gently onto a smooth surface if soiled lightly. Replace if heavily soiled or
damaged. Do not wash out paper filters, nor blow them out with compressed air or
grease them.
–
Clean the pre-filter every 50 operating hours.
Wash pre-filters in hot water with liquid detergent, rinse them out in clean water,
press out excess water and allow to dry thoroughly in air. Do not lubricate the pre-
filter with oil.
–
After cleaning or replacement, insert the filter element into the air filter plate, insert
the pre-filter in the cover and fix in place with the grid.
–
Insert the hooks (5) on the cover (1) into the seat (6) at the bottom in the air filter
plate.
–
Tilt the cover upwards and close with care.
In the case of unfavourable operation conditions (severe formation of dust), cleaning is
required after every mowing process. Replace the paper filter element and pre-filter
annually or every 100 operation hours.
(Please see original spare parts and accessories for order no. of filter element)
SA322120
–
Loosen the nut (1) on the air filter cover (2) and remove the cover.
–
Remove the pre-filter (3) and paper filter element (4).
–
Clean the paper filter element every 50 operating hours.
Knock gently onto a smooth surface if soiled lightly. Replace if heavily soiled or
damaged. Do not wash out paper filters, nor blow them out with compressed air or
grease them.
–
Clean the pre-filter every 50 operating hours.
Wash pre-filters in hot water with liquid detergent, rinse them out in clean water,
press out excess water and allow 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 in the air filter plate
(5). Ensure that the air filter sits firmly in the plate.
–
Put the cover (2) on the air filter and fasten it with the nut (1) on the air filter plate
(5).
In the case of unfavourable operation conditions (severe formation of dust), cleaning is
required after every mowing process. Replace the paper filter element and pre-filter
annually or every 200 operation hours.
(Please see original spare parts and accessories for Order No. of filter element and pre-
filter)
Checking the spark plug (Illustration Y )
SA322020
To check for wear, remove the spark plug connector and unscrew the spark plug. 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 0.6-0.7
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.
SA322120
To check for wear, remove the spark plug connector and unscrew the spark plug. 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 0.5 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.
All models
Correct winter storage of the engine (or when not used for a long period
of time)
–
Empty the petrol tank or allow the engine to run until it stops due to lack of fuel.
–
Switch off engine and disconnect spark plug cable.
–
Drain off the oil while the engine is still warm. Fill with fresh oil (for quantity and
type, see technical data).
–
Clean grass and chaff from cylinder and cylinder head fins and around muffler.
–
Always keep the machine in a clean condition in a closed, dry room out of reach of
children.
18
TROUBLESHOOTING
Fault
Possible cause
Remedy
Engine does not start
up
Control handle not
turned down.
Press the control handle onto
the upper part of the bar
D
.
Fuel tap closed (only for
model
SA322020
).
Open the fuel tap
A
.
Fuel tank empty.
Fill up with clean and fresh
fuel.
Spark plug connector
loose.
Push plug connector in place
or have it checked by an
authorised workshop.
Spark plug defective or
soiled or electrodes worn
out.
Replace or clean spark plug,
set electrode distance
Y
.
0.6-0.7 mm (for model
SA322020
)
0.5 mm (for model
SA322120
).
Too much petrol feed to
engine (spark plug wet).
Have it checked by an
authorised workshop.
Air filter soiled.
Clean or replace the air filter
insert
W
.
Engine power
decreasing
Air filter soiled.
Clean or replace the air filter
insert
W
.
Spark plug clogged with
soot.
Have it checked by an
authorised workshop.
Fuel old or soiled
Empty the petrol tank and fill
with fresh petrol.
Engine runs irregularly
Air filter dirty.
Clean or replace air filter
insert
W
.
Spark plug contaminated
with soot.
Have it cleaned by an
authorized dealer.
Mower does not work
Pull drive control bar not
pulled.
Pull drive control bar
G
.
Have it checked by an
authorised workshop.
Drive speed cannot be
regulated
Have it checked by an
authorized dealer
Extreme vibration
Have it checked by an
authorized dealer
Cut not clean,
lawn turns yellow
Cutting blade blunt.
Have it sharpened and
balanced by an authorised
workshop
Q
.
Cutting height too low.
Set higher cutting height
I
.
Motor speed too low.
Have it checked by an
authorized dealer
Mowing speed too high.
Adapt mowing speed, switch
motor drive off if necessary.
Insufficient overlap
between mowing lanes.
If grass is long, the mowing
lanes may need to overlap
further.
Lawn matted.
A perceptible improvement
can be achieved by using a
scarifier.
The mulched grass
does not look good:
clumps, excessive cut
material, coarse cut
Cutting blade blunt.
Have it sharpened and
balanced by an authorised
workshop.
Mulching rule ignored
(cut max. 1/3 of grass
height; the grass height
to be cut must be less
than 10 cm)
Set higher cutting height
I
.
Driving speed too high.
Adapt driving speed, switch
motor drive off if necessary.
Summary of Contents for 53-PRO M VARIO
Page 2: ...A1 E1 W2 W4 L1 I I1 W3 Y1 SA322020 Y1 SA322120 A SA322020 D ...
Page 3: ...E F G H M O B4 N N4 Q R ...
Page 4: ...W SA322020 W SA322120 Y SA322020 Y SA322120 ...
Page 6: ......
Page 20: ......
Page 60: ......
Page 74: ......