Stiga 121 M User Manual

STIGA PARK

121 M

8211-3011-08

1. Park -1993

5a.

5b.

D

5c. Pro18 - Pro20

2. Park -1993

3. Park -1993

6a. Park -1999

F

H

7.

I

6b. Park 2000-

G

4. Park -1993

2

I

8.

J

9.

13.

10.

11.

14.

Z

V

W

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)

X

Y

12.

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ENGLISH

GB

SYMBOLS

The following symbols can be found on the
machine to remind you of the care and attention
that are required during use.

The symbols mean:

Warning!
Read the instruction manual and the safety
manual before using the machine.

Warning!
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.

Warning!
Before starting repair work, remove the
spark plug cable from the spark plug.

INTRODUCTION

ThiscuttingdeckmayonlybeusedwithPark
machines with a motor performance of at least 16
hp.

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).

4. Install the spring in the new hole (fig. 4).

INSTALLATION

CUTTING DECK

1. Screw the cutting deck into the deck mounts D
(fig. 5a).

2. Then hook the lower S-hook into the cutting
deck (fig. 5b-c).

3. Connect the electrical contact to the socket on
the side of the machine (only applies to item no.
13-2921), (fig. 6).

V-BELT

1. Set the cutting height setting to an intermediate
position.

2. Lift up the deck with the tool lift.

3. Force the V-belt onto the machine’s centre
pulley F (fig. 7).

4. T ension the belt with belt idler G. The belt idler
should be on the left of the belt viewed from the
driver’s position.

5a. Park -1999:
Hook the belt idler spring H in the floor on the
right side (fig. 7).

5b. Park 2000- :
Hook the belt idler spring H in the mount
diagonally behind the right front wheel (fig. 7).

SETTING

In order forthe deckto cutevenly and attractively,
it has to be correctly adjusted:

PREPARATIONS

Park, year models up to and including 1993:

In order for the deck to be used, the machine has to
be modified:

1. Remove the return spring for the articulated

joint
(fig. 1).

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).

1. Make sure the airpressurein the tyres is correct:
Front: 0.6 bar (9 psi).
Rear: 0.4 bar (6 psi).

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.

4. Tighten the screws.

USE

CUTTING HEIGHT

Thecuttingheightcanbevariedfrom30to80mm.

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GB

ENGLISH

- item no. 13-2915 has seventeen fixed positions

for cutting height.

- item no. 13-2921 has continuously variable

adjustment of cutting height.
Note: Stated cutting heights apply when the

machine is on a firm surface.

CUTTING TIPS

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.

MAINTENANCE

PREPARATIONS

Unless otherwise stated, all service and
maintenance must be carried out on a stationary
machine when the motor is not running.

Prevent the machine from rolling by
always applying the parking brake.

CLEANING

After each use, the underside of the cutting deck
should be rinsed off.

If the grass has dried solid, scrape clean the
underside.

If necessary, paint the underside to prevent
corrosion.

POSITIVE DRIVE BELTS

If one of the blades has struck a solid object (e.g. a
stone), the b elt tension may be altered. This can
lead to the positive drive belt ‘over-meshing’
which, in the long term, can damage the blades.

Adjust the belt tension if necessary:

1. Unhook belt idler spring H (fig. 7).

2. Force the belt off the centre pulley F.

3. Dismantle the transmission cover.

4. Undo tensioning arm K (fig. 12).

5. Undo the bearing box’s mounting screws L (fig.

13).

6. Tension the positive drive belt by pressing the
tensioning arm backwards.

7. Tighten the tensioning arm’s mounting screw.

Prevent unintentional starting of the
motor by always stopping the motor,
disconnecting the spark plug c able
from the spark plug and earthing it.
Disconnect the negative cable from the
battery.

MAINTENANCE TIPS

To make cleaning and maintenance easier, the
cutting deck can be folded up:

1. Set the cutting height setting to an intermediate

position (= drive belt minimum tension).

2. Lift up the deck with the tool lift.

3. Unhook belt idler spring H (fig. 7).

4. Force the belt off the centre pulley F.

5. Undo both pins J (fig. 9).

6. Grip the deck’s frame (fig. 10).

7. Fold up the deck until it is upright on the rear

support plates (fig. 11).

8. Tighten the bearing box’s mounting screws.

9. Repeat with the other positive drive belt.

When replacing positive drive belts,
ensure that both the outer blades are
always at right-angles to the central
blade(seefig.14).

If the positive drive belts are incorrectly mounted,
the blades will strike each other because they
overlap.

Always check the position of the blades after
replacing a belt or adjusting belt tension.

REPLACING BLADES

Use protective gloves when changing
blades to avoid cutting yourself.

Ensure that the blades are always sharp. This
produces the best cutting results.

Always check the blades after a collision. If the
blade system has been damaged, defective parts
should be replaced.

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ENGLISH

Always use original spare parts. Non­original 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

GB

STIGA original spare parts and accessories are
designed specifically for STIGA machines. Please
notethat‘non-original’ spare partsandaccessories
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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