Maintenance And Repair - Wolf Garten GT-S 2-31 Notice D'instruction D'origine

CAUTION: Before performing any work on the unit:
– Switch off the engine.
– Wait until all moving parts have come to standstill;
the engine must have cooled down.
– Remove spark-plug terminal from the engine to prevent
the engine from starting unintentionally.
Have all repairs carried out by a repair shop only.
At the end of the season have the unit inspected and
serviced by a specialist company.
INSTALLING THE CUTTING LINE
Always use a replacement cutting line which has a diameter
of 2.41 mm and a maximum length of 4.5 m. If using
a cutting line which has a length other than the one
indicated, the engine may overheat or misfire.
NOTE: The line can be installed on a spool which has either
been removed from or is mounted on the unit.
1. Remove any residual line from the spool (Fig. 25).
– Turn the bump knob (1) anti-clockwise (in direction of
arrow on the spool) until both ends of the line have
disappeared in the spool housing (Fig. 25a).
– Turn the bump knob until the arrows on the bump
head and on the upper spool housing are in alignment
(Fig. 25c).
– Pull residual line completely out of the spool (Fig. 25b).
2. Turn bump knob until the threading holes (2) in the bump
knob are in alignment with the exit holes (3) in the lower
spool housing (Fig. 26).
3. Insert one end of the line into one threading hole until it
protrudes out of the exit hole by approx. 5 cm (Fig. 27).
4. Repeat the step with the other end of the line in the
second threading hole.
5. On both sides pull both ends of the line, which have
the same length, as far as possible out of the spool
(Fig. 28a).
NOTE: Pull out firmly so that the loop is inserted into the
recess on the bump knob (Fig. 28b).
6. Turn bump knob anti-clockwise (in direction of arrow on
the spool) to wind the line onto the spool. Both ends of
the line should still protrude out of the spool by approx.
20 cm (Fig. 29).
NOTE: The spool can be opened for cleaning or to remove
a longer line.
– Press locking plate (4) and simultaneously turn the
upper spool housing (5) all the way anti-clockwise
(Fig. 30a).
– Remove upper spool housing (Fig. 30b).
Assembly is in reverse sequence. Ensure that the arrows
on the upper spool housing (5) and on the locking plate
(4) are in alignment (Fig. 30c).
– Then press the spool halves firmly together and
simultaneously turn the upper spool housing all the
way clockwise so that the locking plate can engage.
22

MAINTENANCE AND REPAIR

SERVICING THE AIR FILTER
Remove the air filter/muffler cover
1. Set the choke lever (if provided) to the HALF choke
position (2).
NOTE: The choke lever must be in the HALF choke position
(2) before the air filter/muffler cover can be removed
(Fig. 31).
2. Remove the four (4) screws which secure the air filter/
muffler cover.
3. (Fig. 31). Use a flat screwdriver or T-20 Torx screwdriver
bit.
4. Pull the cover off the engine.
CLEANING THE AIR FILTER
After every ten operating hours clean and oil the air filter.
This is an important part of maintenance. If the air filter
is not serviced, the warranty will be deemed null and void.
1. Remove the air filter/muffler cover. See Removing the
air filter/muffler cover.
2. Remove the air filter behind the air filter/muffler cover
(Fig. 32).
3. Wash the filter with water and detergent (Fig. 33). Flush
out the filter thoroughly. Press out excess water. Leave
filter to dry completely.
4. Lightly lubricate the filter with clean oil (Fig. 34).
5. Press out the filter to distribute the oil and remove excess
oil (Fig. 35).
6. Reinstall the air filter in the air filter/muffler cover (Fig. 32).
NOTE: If the unit is used without the air filter and air filter/
muffler cover, the warranty will be deemed null and
void.
INSTALLING THE AIR FILTER/MUFFLER COVER
1. Place the air filter/muffler cover over the rear part of the
carburettor and muffler.
NOTE: The choke lever must be in the half choke position (2)
before the air filter/muffler cover can be installed
(Fig. 31).
2. Insert the four (4) screws into the holes of the air filter/
muffler cover (Fig. 31) and tighten. Use a flat screwdriver
or T-20 Torx screwdriver bit. Do not tighten too tightly.
CARBURETTOR ADJUSTMENT
The idle speed can be set with the screw (Fig. 36).
Have this setting carried out by a specialist company only.