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5.3 Service position
1. Activate the parking brake.
2. Set the implement lifter in transport position.
3. If the deck has electrical cutting height adjust-
ment, disconnect the cable from the machine.
See fig. 15.
4. 125 Combi Pro, 107 M HD, 107 M:
Set the highest cutting height.
121 M
: Set the cutting height in the centre posi-
tion.
5. 125 Combi Pro:
Remove pins and washers. See fig. 2.
107 M HD
:
Remove pins and washers. See fig. 13.
107 M
: Lift up the rear section of the cutting
deck, undo the catches (12:L) and lower.
121 M:
Disconnect the rear section of the cut-
ting deck by removing the pins (7:I).
6. Remove the belt cover. See fig. 5:E, 8 and 10.
The number in the figure indicates the key
width.
7. Only 125 Combi Pro:
Remove the belt guide (5:F).
8. Grip the belt tensioner’s lever with your left
hand. Pull the lever and unhook the tensioner
from the belt with your right hand. See fig. 16.
9. Force the belt off the deck’s pulley.
10.Grip the front edge of the deck and lift up. Lift
until the deck is completely vertical and rest the
rear edge on the floor. See fig. 20.
Reset 125 Combi Pro in accordance with 3.1.
Reset 107 M HD in accordance with 3.2.
Reset 107 M in accordance with 3.3.
Reset 121 M in accordance with 3.2.
5.4 Cleaning
The underside of the deck must be cleaned after
each use.
Set the deck in washing position.
Clean the underside of the deck carefully. Use a
high-pressure washer, scraper and/or brush.
When the surfaces are completely dry and clean,
touch up the paintwork. Use durable yellow paint
intended for metal outdoors.
5.5 Wheels
125 Combi Pro is fitted with two lubricating cups
(21:M) for the vertical shafts.
107 M HD
is fitted with two lubricating cups for
the vertical shafts (21:M) and two lubricating cups
(21:N) for the wheel axles.
The grease nipples must be lubricated with univer-
sal grease after 50 hours of operation.
5.6 Replacing blades
Wear protective gloves when changing
blade(s) to avoid cutting yourself.
Check that the blades are always sharp.
This produces the best cutting results.
Always check the blade(s) after a collision. If the
blade system has been damaged, defective parts
should be replaced.
Always use genuine spare parts. Non-
genuine spare parts can entail a risk of
injury, even if they fit the machine.
The deck is equipped with blades accord-
ing to the following alternatives:
• Separate blades, screwed into place on the blade
bars. See fig. 22.
• Full blade. See fig. 23.
5.6.1 Separate blades
The blades are replaceable. When replacing, both
blades on the same blade bar must be replaced to
avoid imbalance.
Tightening torque:
Screws (22:P) - 24 Nm
Shear bolts (22:Q) - 9.8 Nm
In the event of a collision, the shear bolts (22:Q)
can break and the blades bend back. If this has hap-
pened, install genuine shear bolts and tighten as
above.
5.6.2 Full blade, fig. 23
The full blade is replaced when the edges are worn.
Install the new blade with the punched text facing
down.
Tightening torque: 24 Nm.
5.7 Synchronising, blades
The following decks have synchronised blades:
• 107 M
• 107 M HD
• 121 M
If one of the blades has struck a solid object (e.g. a
stone), the positive drive belt may mesh incorrect-
ly, endangering the synchronisation. This entails a
risk of the blades colliding with each other.
Correctly synchronised blades must be offset 90°
from each other. See fig. 24.
Always check synchronisation after a collision.
If there is any suspicion of incorrect synchronisa-
tion, contact an authorised Stiga workshop for re-
pair work to be carried out.
The blades in the 125 Combi Pro are freely rotat-
ing.