Stiga Saw 121 M User Manual

STIGA PARK  
121 M  
8211-3011-09  
 
J
9.  
13.  
10.  
14.  
Z
X
Y
V
W
11.  
15.  
Denna produkt, eller delar därav, omfattas av följande  
mönsterskydd:  
This product, or part of it, is covered by the following  
design registration:  
Sverige/Sweden  
62 435  
Tyskland/Germany  
M97 07 997.9 (pending)  
12.  
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GB  
ENGLISH  
4. Install the spring in the new hole (fig. 4).  
SYMBOLS  
The following symbols can be found on the  
machine to remind you of the care and attention  
that are required during use.  
INSTALLATION  
CUTTING DECK  
The symbols mean:  
1. Screw the cutting deck into the deck mounts D  
(fig. 5a).  
Warning!  
Read the instruction manual and the safety  
manual before using the machine.  
2. Attach the lift spring to the implement lifter (fig.  
5b).  
Warning!  
3. Install the lifting cylinder in the front lifting arm  
by inserting the accompanying spacer in the hole  
on the lifting cylinder and threading on two  
washers, one on either side. Secure with screw and  
nut (only applies to item no. 13-2921).  
Do not insert your hands or feet under the  
cover when the machine is in operation.  
Warning!  
Watch out for discarded objects. Keep  
onlookers away.  
4. Connect the electrical contact to the socket on  
the side of the machine (only applies to item no.  
13-2921), (fig. 6).  
Warning!  
V-BELT  
Before starting repair work, remove the  
spark plug cable from the spark plug.  
1. Set the cutting height setting to an intermediate  
position.  
2. Force the V-belt onto the machine’s centre  
pulley F (fig. 7).  
INTRODUCTION  
3. Tension the belt with belt idler G. The belt idler  
should be on the left of the belt viewed from the  
driver’s position.  
This cutting deck may only be used with Park  
machines with a motor performance of at least 16  
hp.  
4. Park -1999:  
Hook the belt idler spring H in the floor on the  
right side (fig. 7).  
The cutting deck is available as standard in two  
versions:  
- with mechanical setting of the cutting height  
(item no. 13-2915).  
- with factory-fitted, electrical setting  
of the cutting height (item no. 13-2921).  
SETTING  
In order for the deck to cut evenly and attractively,  
it has to be correctly adjusted:  
1. Make sure the air pressure in the tyres is correct:  
Front: 0.6 bar (9 psi).  
PREPARATIONS  
Rear: 0.4 bar (6 psi).  
Park, year models up to and including 1993:  
In order for the deck to be used, the machine has to  
be modified:  
2. Place the machine on a level floor. Undo screws  
I (fig. 8).  
3. Adjust the deck so that the front and rear edge of  
the cover are the same height above the floor.  
1. Remove the return spring for the articulated  
joint  
(fig. 1).  
4. Tighten the screws.  
2. Saw off the spring mount flush with the frame  
side member  
(fig. 2).  
3. Drill a new hole (Ø 8 mm), 8 mm from the lower  
edge of the frame side member (fig. 3).  
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GB  
ENGLISH  
6. Fold up the deck until it is upright on the rear  
support plates (fig. 11).  
USE  
CLEANING  
CUTTING HEIGHT  
After each use, the underside of the cutting deck  
should be rinsed off.  
The cutting height can be varied from 30 to 80 mm.  
- item no. 13-2915 has seventeen fixed positions  
for cutting height.  
- item no. 13-2921 has continuously variable  
adjustment of cutting height.  
If the grass has dried solid, scrape clean the  
underside.  
If necessary, paint the underside to prevent  
corrosion.  
Note: Stated cutting heights apply when the  
machine is on a firm surface.  
POSITIVE DRIVE BELTS  
CUTTING TIPS  
If one of the blades has struck a solid object (e.g. a  
stone), the belt tension may be altered. This can  
lead to the positive drive belt ‘over-meshing’  
which, in the long term, can damage the blades.  
For optimum ‘Multiclip effect’, follow these tips:  
- cut frequently.  
- run the motor at full revs.  
- keep the underside of the cutting deck clean.  
- use sharp blades.  
- do not cut wet grass.  
- cut twice (with different cutting heights) if  
the grass is long.  
Adjust the belt tension if necessary:  
1. Secure the tensioning arm on the hook.  
2. Force the belt off the centre pulley F.  
3. Dismantle the transmission cover.  
4. Undo tensioning arm K (fig. 12).  
MAINTENANCE  
5. Undo the bearing box’s mounting screws L (fig.  
13).  
PREPARATIONS  
6. Tension the positive drive belt by pressing the  
tensioning arm backwards.  
Unless otherwise stated, all service and  
maintenance must be carried out on a stationary  
machine when the motor is not running.  
7. Tighten the tensioning arm’s mounting screw.  
8. Tighten the bearing box’s mounting screws.  
9. Repeat with the other positive drive belt.  
Prevent the machine from rolling by  
always applying the parking brake.  
When replacing positive drive belts,  
ensure that both the outer blades are  
always at right-angles to the central  
blade (see fig. 14).  
Prevent unintentional starting of the  
motor by always stopping the motor,  
disconnecting the spark plug cable  
from the spark plug and earthing it.  
Disconnect the negative cable from the  
battery.  
If the positive drive belts are incorrectly mounted,  
the blades will strike each other because they  
overlap.  
MAINTENANCE TIPS  
Always check the position of the blades after  
replacing a belt or adjusting belt tension.  
To make cleaning and maintenance easier, the  
cutting deck can be folded up:  
REPLACING BLADES  
1. Set the cutting height setting to an intermediate  
position (= drive belt minimum tension).  
Use protective gloves when changing  
blades to avoid cutting yourself.  
2. Secure the tensioning arm on the hook.  
3. Force the belt off the centre pulley F.  
4. Undo both pins J (fig. 9).  
Ensure that the blades are always sharp. This  
produces the best cutting results.  
5. Grip the deck’s frame (fig. 10).  
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GB  
ENGLISH  
Always check the blades after a collision. If the  
blade system has been damaged, defective parts  
should be replaced.  
Always use original spare parts. Non-  
original spare parts can entail a risk of  
injury, even if they fit the machine.  
The cutting system comprises three blade  
bars with two replaceable blades Y (fig. 15). When  
replacing blades, both should be replaced to avoid  
imbalance.  
Install the new blades. Tighten screws V and W  
properly. Tightening torque: V - 9.8 Nm, W - 24  
Nm.  
In the event of a powerful collision, the blades may  
be bent out. Undo the locking nut X and fold back  
the blade. Install a new original break bolt V.  
Tighten the locking nuts X and Z.  
SPARE PARTS  
STIGA original spare parts and accessories are  
designed specifically for STIGA machines. Please  
note that ‘non-original’ spare parts and accessories  
have not been checked or approved by STIGA:  
The use of such parts and accessories  
can affect the function and safety of the  
machine. STIGA accepts no  
responsibility for damage or injuries  
caused by such products.  
STIGA reserves the right to make alterations to the  
product without prior notification.  
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M O W I N G A H E A D  
BOX 1006 · SE-573 28 TRANÅS  
w w w.s t iga.co m  
 

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