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ENGLISH
GB
3. In this position, the spring H should be extend-
ed 6 mm from it’s unloaded position to provide
sufficient locking force in the transmission.
4. If the spring is not extended sufficiently, adjust
the wire nipple I at the handlebar.
5. First loosen the locking nut S and then adjust
the nipple I.
6. Set the clutch control to the position and
check that the transmission is disengaged by
rolling the mower forwards and backwards.
ADJUSTING DRIVE BELT
(Multiclip 51S, PRO 51S)
Check the belt tension regularly. The drive belt is
correctly adjusted when the shoulder bolt K is cen-
tred in the front hole on the engine bracket
(fig. 25).
Incorrect belt tension can bring about abnormal vi-
brations in the handle (the belt is tensioned too
tightly) or the belt can start to slide (the belt is not
tensioned enough).
Adjust the drive belt like this: Stop the engine and
remove the spark plug cable from the spark plug.
Dismantle the transmission casing. Undo the
screw L. Pull the transmission forwards so that the
belt is tensioned and tighten the screw L. The drive
belt must be adjusted so that the shoulder bolt K is
centred in the front hole on the engine bracket.
SHOCK-ABSORBER
(PRO 48, PRO 51S)
The forward shock-absorber P (fig. 26) takes up a
greater load. Check the shock-absorber twice per
season. If the shock-absorber shows signs of dam-
age or wear it should be replaced.
CHANGING BLADES
Wear protective gloves when changing
blades to avoid cutting yourself.
Blunt and damaged blades tear up the grass and
make the lawn unsightly after mowing. New well-
sharpened blades cut off the grass. This gives a
green and fresh appearance after mowing.
Always check the blade after an impact. First dis-
connect the spark plug cable. If the blade system
has been damaged, defective parts should be re-
placed. Always use genuine spare parts.
To replace the blade, undo the screw (fig. 27). Fit
the new blade so that the stamped STIGA logo is
facing the blade holder (not facing the grass). Re-
install as illustrated. Tighten the screw properly.
Tightening torque 40 Nm.
When replacing the blade, the blade screw should
also be replaced.
The guarantee does not cover damage to the blade,
blade holder or engine caused by running into ob-
stacles.
When replacing the blade, blade holder and blade
screw, always use genuine spare parts. Non-genu-
ine spare parts can entail a risk of injury or dam-
age, even if they fit the machine.
SHARPENING THE BLADES
Sharpening of the blades must be performed by
wet grinding, using a whetstone or a grindstone.
For safety reasons, the blades should not be sharp-
ened on an emery wheel. Too high temperature
could cause the blade to become brittle.
Once the blade has been sharpened, it
must then be balanced to avoid vibra-
tion damage.
STORAGE
WINTER STORAGE
Empty the fuel tank. Start the engine and let it run
until it stops. The same petrol must not remain in
the tank for more than one month.
Tip up the mower and unscrew the spark plug.
Pour a tablespoon of engine oil into the spark plug
hole. Pull out the starter handle slowly so that the
oil is distributed in the cylinder. Screw in the spark
plug.
Thoroughly clean the mower and store it indoors in
a dry place.
SERVICING
Genuine spare parts are supplied by service work-
shops and by many dealers.
www.stiga.com