Stiga PRO 20 8211-0276-02 User Manual

STIGA PARK

PRO 20
PRO 16

ROYAL

PRESIDENT

SENATOR

8211-0276-02

20

PARK

19

1.

6

2

4

3

2.

16

5

1

3.

PARK

10

7

4. Senator 5. President

14

7

11

9

11

8

9

7

13

7

14

14

11

9

11

8

9

15

6. Royal 7. Pro 16

13

14

7

15

8

9

12

16

13

15

14

7

15

8

18

16

9

12

16

8. Pro 18

17

9. Pro 20

PARK

1

2

2

1

10.

12.

11.

13. Senator - President

14. Royal

OPEN

16.

15.Pro16-Pro18-Pro20

17. Royal

PARK

18. Pro 16 - Pro 18 - Pro 20

20. Royal

19. Senator - President

21.Pro16-Pro18-Pro20

0.75 mm

22. Pro 18 - Pro 20

24. Senator - President

23.

25.Royal-Pro16-Pro18-Pro20

PARK

26.

MAX

28.

27.

29a. President - Royal

29b. Pro 16 - Pro 18 - Pro 20

GB

GENERAL

This symbol indicates WARNING. Per­sonal injury and/or damage to property
may result if the instr u ctions are not
followed carefully.

ENGLISH

1. IMPLEMENT LIFTER

A pedal for raising front-mounted accessories to
the transport position.

To liftup theaccessory,pressthe pedaldownas far
as it will go. Then release the pedal, the implement
lifter is now locked in the lift position.

Youmustreadthese instructionsfor use
and the accompanying pamphlet
“SAFETY INSTRUCTIONS” careful­ly, before starting up the machine.

SYMBOLS

The following symbols are displayed on the ma­chine in order to remind you about the safety pre­cautions and attention necessary when using the
machine.

The symbols mean:

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

Warning!
Beware of objects being flung out. Keep
spectators away.

Warning!
Always use hearing protectors.

Warning!
This machine is not designed to b e driven
on public roads.

To lower the accessory, press the pedal down so
that the lock is released.Lower the implement lift­er to the working position by slowly lifting your
foot from the pedal.

2. LIFT HELP (Pro18 - Pro20)

The implementlifter is complementedwith adjust­able lifthelp in the form of a gas spring.This facil­itates lifting heavy accessories.

Under the engine casing, on the top of the rear
bumper, there is a setting crank.

Use this to increase/decrease the lift help.

Screw anti-clockwise to increase the
lift help if heavy accessories are be­ing used.

Screw clockwise to decrease the lift
help if lighter accessories are being
used.

3A. SERVICE BRAKE/CLUTCH
(Senator)

A pedal that combines both service brake and
clutch. Three positions:

Warning!
The machine, equipped with original ac­cessories, must not be driven in any direc­tion on slopes with a gradient greater than
10º.

Warning!
Clamp risk. Keep hands and feet well
away from the articulated steering joint.

Warning!
Riskfor burn injuries. Do not touchthe si­lencer/catalytic converter.

CONTROLS AND

INSTRUMENTS

Items 1 - 20, see figures 1 - 9

8

1. Pedalreleased– forward drive
engaged. The machine will
move if a gear is engaged. Serv­ice brake not activated.

2. Pedal depressed halfway –
forward drive disengaged, gear
shifting can be performed. Serv­ice brake not activated.

3. Pedal fully depressed – for­ward drive disengaged. Service
brake fully activated.

NOTE! You must never regulate the operating
speed by slipping the clutch. Use a suitable gear in­stead, so that the right speed is obtained.

3B. SERVICE BRAKE (President ­Royal - Pro16 - Pro18 - Pro 20)

A pedal that acts upon the machine’s braking sys-

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tem. There are 3 positions:

1. Pedal released – service brake
not activated.

2. Pedal depressed halfway –
forward drive disengaged. Serv­ice brake not activated.

3. Pedal fully depressed – for­ward drive disengaged. Service
brake fully activated.

4. PARKING BRAKE

An inhibitor that can lock the brake pedal in the de­pressed position.

Depress the brake pedal fully. Move the
inhibitor to the right and then release the
brake pedal.

The parking brake isre leased by pressingthebrake
pedal. The spring-loaded inhibitor slides to one
side.

Make sure that the parking brake is released when
operating the machine.

7. THROTTLE/CHOKE CO NTRO L

A control for setting the engine speed and to choke
the engine when starting from cold (the latter does
not apply to Royal-Pro16-Pro18-Pro20 whic h
have separate choke control – see item 8).

1. Choke – for starting a cold engine. The
chokeis located in topof groove (doesnot
apply to Royal- Pro16-Pro18-Pro20).

2. Full throttle – when the machine is in
operation, full throttle should always be
used.

3. Idle running.

8. CHOKE CONTROL (Royal - Pro16 ­Pro18 - Pro20)

A pull-type control to choke the engine when start­ing from cold.

1. Control fully pulled out – choke valve
in carburettor closed. For starting cold en­gine.

5. DRIVE PEDAL (President - Royal ­Pro16 - Pro18 - Pro20)

A pedal that activates the variable transmission.

1. Depress the pedal with the
ball of your foot – the machine
moves forwards.

2. No load on the pedal – the ma­chine is stationary.

3. Depress the pedal with your
heel – the machine reverses.

The drive pedal regulates the speed. The more
pressure applied, the faster the machine will move.

6. ADJUSTABLE STEERING WHEEL
(President - R oyal - Pro16 - Pro18 ­Pro20)

The steering wheel can be adjusted vertically in 5
positions. Press in the inhibitor on the steering col­umn and raise or lower the steering wheel to the
desired position.

Do not adjust the steeri ng wheel during opera­tion.

2. Control pushed in – choke valve open.
For starting warm engine and when oper­ating the machine.

Never operate the machine with the choke
pulled out when the engine is warm.

9. IGNITION LOCK/SPOTLIGHT

Ignition lock used for starting/stopping the engine.
Also includes switch for spotlight (Senator does
not have a spotlight). Four positions:

1. Stop position – the engine is short­circuited. The key can be removed.

2. Operating position – spotlight activat­ed.

3. Operating position – spotlight not acti­vated.

4. Start position – the electric start motor
isactivatedwhenthekeyisturnedtothe
spring-loaded start position. Once the en­gine has started, let the key return to oper­ating position 3.

T o turn on the spotlight, turn the key to position 2.

NOTE! If the key is turned from the stop posi-

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ENGLISH

tion to operating position 2, the spotlight is acti­vated. Th is uses up battery power. Do not leave
the machine with the key in position 2 (applies
to Pro16-Pro18-Pro20).

10. GEAR LEVER (Senator)

A lever for selecting one of the five forward gears
in the gearbox (1-2-3-4-5), neutral (N) or reverse
(R).

The clutch pedal must be kept pressed in when
changing gear.

NOTE! You must make sure the machine is quite
stationary before changing from reverse toforward
gear or vice versa. If a gear does not engage imme­diately,release theclutch pedal andthen press it in
once again, then engage the gear once again. Never
force a gear in.

11. POWER TAKE-OFF (Senator ­President - Royal - Pro16)

A lever for engaging and disengaging the power
take-off for driving front-mounted accessories.
There are two positions:

1. Lever in forward position – power take­off disengaged.

2. Lever in backward position - power
take-off engaged.

tion.

2. Backward position– the differential in­hibitor is engaged. For normal operation.
Works for both forward and reverse drive.

The differential lever is of greatest use when the
rear wheels are unevenly loaded. For example,
when driving across a slope, where the upper rear
wheel is not as loaded, as wheel as when turning
sharp corners where the inner rear wheel bears a
lesser load.

When drivingduringthe winter onslippery surfac­es, the drive capacity is improved if snow chains
are not used.

When the differential inhibitor is engaged, the
steering is heavy. Avoid turning the steering
wheel!

14. HOUR METER (President - R oyal

-Pro16-Pro18-Pro20)

Indicates the number of working hours. Only
works when the engine is running.

15.CRUISECONTROL(Royal- Pro16

-Pro18-Pro20)

A switch for activating the cruise control. The
function of the cruise control allows the drive ped­al (5) to be locked in the desired position. You do
not need to use your right foot.

12. POWER TAKE-OFF (Pro18 ­Pro20)

Switch for engaging/disengaging the electromag­netic power take-off for driving front-mounted ac­cessories. There are two positions:

1. Press the front part of the switch – the
power take-off is engaged. The symbol
lights up.

2. Press the rear part of the switch – the
power take-off is disengaged.

13. DIFFERENTIAL INHIBITOR
(Pro16 - Pro18 - Pro20)

Lever for engaging the differential inhibitor. This
improves the towing capacity by locking the rear
wheels so that both wheels drive simultaneously.
There are two positions:

1. Forward position – the differential in­hibitor is not engaged. For normal opera-

1. Press down the drive pedal until the de­sired speed is obtained. Then press the
front part of the switch to activate the
cruise control. The symbol will light up.

2. Disengage the cruise control by press­ing the rear part of the switch.

16.CUTTING HEIGHT ADJUSTMENT
(Pro16 - Pro18 - Pro20)

The machine is equipped with a control for using
the mower deck with electrical cutting height ad­justment (available as an accessory).

Theswitchisusedtoadjustthecutting
height in continuou sly variable positions.

The contact used for connecting the mower deck is
mounted on the right side, in front of the front tyre
(fig. 2).

17. REAR RAKE (Pro 20)

The machine has been designed for electrical ad-

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justmentof a rear rake (available as an accessory).

Theswitchisusedtoraiseandlowerthe
rear rake.

Connection cables for the rake are located to the
rear of the machine, to the left on the top of the
bumper (Pro16 and Pro18 are prepared for a rear
rake).

18. SAND SPREADER (Pro20)

The machine has been designed for electrical ad­justment of a sand spreader (available as an acces­sory).

Theswitchisusedtostartandstopthe

12V

A connection contact for the sand spreader is locat­ed to the rear of the machine, to the left on the top
of the bumper (Pro16 and Pro18 are prepared for a
sand spreader).

spreader.

19. DISENGAGING LEVER (Presi­dent - Royal - Pro16 - Pro18 - Pro20)

A lever for disengaging the variable transmission.
Enables the machine to be moved by hand without
the help of the engine. There are two positions:

1. Lever moved back – transmis­sion engaged for normal opera­tion.

2. Lever moved forward – trans­mission disengaged. The ma­chine can be moved by hand.

1. Mowing

Using mower deck 13-2927 (107M), 13-2917
(110S), 13-2915/13-2921 (121M) or flail mow­er 13-1977.

2. Sweeping

Using brush unit 13-1933 or collector brush
unit 13-1939. Use of dust guard 13-1936 is rec­ommended with the first option.

3. Snow clearanc e

Usingsnow blade13-1916 or snowthrower 13-

1948. Snow chains 13-1956 (16”)/13-0902
(17”) and wheel weights 13-1982 are recom­mended.

4. Grass clipping and leaf collection

Using towed collector 13-1978 (30”) or 13­1950 (42”).

5. Grass and leaf transport

Using dump cart 13-1979 (Standard), 13-1988
(Maxi) or 13-1992 (Combi).

6. Sand spreading

Using sand spreader 13-1975. Can also be used
for spreading salt. Snow chains 13-1956 (16”)/
13-0902 (17”) and wheel weights 13-1982 are
recommended.

7. Weeding on gravel paths

Using front mounted hoe 13-1944 and rear­mounted rake 13-1969.

8. Lawn edge trimming

To avoid damage to the transmission, do not tow
the machine for any great distance.

20. FUEL GAUGE/FUEL CAP

Fuel cap with built-infuel gaugethat indi­cates how much fuel there is in the fuel
tank. (applies to Royal-Pro16-Pro18­Pro20)

Senator and President have a fuel cap without a
fuel gauge.

The fuel tank has a capacity of 11.5 l.

AREAS OF USE

Themachinemayonlybeusedforthefollowing
tasks using the STIGA accessories stated.

Using edge trimmer 13-0905.

9. Moss scarification

Using moss scarifier 13-1984.

The maximum vertical load on the towing hitch
must not exceed 100 N.

The maximum over-run load on the towing hitch
from towed accessories must not exceed 500 N.

NOTE! Before using a trailer – contact your insur­ance company.

NOTE! This machine is not intended to be driven
on public roads.

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START AND OPERATING

ENGINE CASING

To inspect a nd maintain the engine and battery, re­move the engine casing as follows:

1. Unscrew the fuel cap/fuel gauge.

2. Carefully lift off the engine casing (fig. 10).
Assembly:

1. Make sure that the front part of the casing fits
into the track in the U-shaped attachment on the
machine (fig. 11).

2. Place the casing over the lip on each side
(fig. 11).

3. Make sure that the pins on the back edge of the
casing go down into the respective holes (fig. 12).

4. Finally, screw in the fuel cap/fuel gauge.

Do not use the machine without first fit­ting the engine casing, otherwise there
is a risk of burn injuries or crushing ac­cidents.

FILLING THE FUEL TANK

Always use lead-free petrol . Never use oil-mixed
petrol.

NOTE! Bearin mind that petrol is a p erishable; do
not purchase more petrol than can be used within
thirty days.

Environmentally friendly petrol can be used. This
type of petrol has a composition that is less hazard­ous for people and nature.

CHECKING THE ENGINE OIL LEVEL

On d elivery, the crankcase is filled with SAE 30
oil.

Check the oil level every time before using to
ensurethat it is correct. The machineshould be
standing on level ground.

Wipe clean round the oil dipstick, remove
it and wipe off. Push down the dipstick
fully and screw it back in.

Then unscrew it and pull it up again. Read off the
oil level. Top up with oil to the “FULL” mark, if
the level comes below it (figs. 13 - 15).

CHECKING THE TRANSMISSION
OILLEVEL(President-Royal-Pro16

-Pro18-Pro20)

The transmission is filled with S AE 10W-40 oil
when the machine is delivered from the factory,

Check the oil level every time before using to
ensure it is correct. The machine should be
standing on level ground.

Read off the oil level in the reservoir (fig. 29). It
should be between the MAX and MIN marks.If
necessary,top up with SAE 10W-40(20W-50) oil.

SAFETY SYSTEM

Thismachine is equippedwith a safetysystem that
consists of:

- a switch on the gearbox (only Senator).

- a switch at the brake pedal.

- a switch in the seat mounting (Senator, Presi­dent) or the seat bracket (other models).

- a switch at the power take-off engagement.

Petrol is highly inflammable. Always
store petrolin containers that aremade
especially for this purpose.

Onlyfill or top up with petroloutdoors,
and never smoke when filling or top­ping up. Fill w ith petrol before starting
theengine.Neverremovethefillercap
or fill with petrol while the engine is
running or still warm.

Never completely fill the fuel tank. Leave an emp­ty space (= at least the entire filler tube plus 1 - 2
cm at the top of the tank) to allow the petrol to ex­pand when it warms up without overflowing (fig.

28).

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In order to start the machine, the following are nec­essary:

- gear lever in neutral (only Senator).

- brake pedal pressed down.

- driver sitting on seat.

- power take-off engagement lever at lowest set­ting (i.e. power take-off disengaged).

Always check the operation of the safe­ty system before using the machine!

With the engine operating and the driver sitting on
the seat, check in the following way:

- select a gear, lift your weight off the seat – the
engine must stop (applies to Senator).

- press the drive pedal so that the machine starts

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to move, release the drive pedal – the machine
must stop (applies to President, Royal, Pro16,
Pro18, Pro20).

- press the drive pedal so that the machine starts
to move, engage the cruise control, lift your
weight off the seat – the machine must stop (ap­plies to Royal, Pro16, Pro18, Pro20).

- press the drive pedal so that the machine starts
to move, engage the cruise control, press the
brakepedal – the machine must stop(applies to
Royal, Pro16, Pro18, Pro20).

- engage the power take-off, lift your weight off
the seat – the engine must stop (applies to Sen­ator, President, Royal, Pro16).

- engage the power take-off, lift your weight off
the seat, the power take-off must be disengaged
(applies to Pro18, Pro20).

Do not use the machine if the safety sys­tem does not work! Take the machine to
a service agent for inspection!

STARTING ENGINE

1. Open the fuel cock (fig. 16).

2. Make sure that the sparking plug cable is prop-

erly in place.

in gradually if it has been used.

9. When starting from cold, do not make the ma­chine work under load immediately, but let the en­gine run for some minutes first. This will allow the
oiltowarmup.

When in use, always operate the engine at full
throttle.

STOPPING

Disengage the power take-off and apply the park­ing brake.

Allowthe engineto idle1 - 2 mins.Stopthe engine
by turning off the ignition key.

Shut off the petrol cock. This is particularly impor­tant if the machine is to be transported on a trailer
for example.

If the machine is left unattended, re­movethelead fromthesparkplug.Also
removethestarterkey.

The engine may be very warm immedi­atelyafteritis shut off. Do nottouchthe
silencer, cylinder or cooling flanges as it
can cause burns and injury.

3. Check to make sure that the power take-off is

disengaged.
4a. Senator:

Put the gear lever in neutral
4b. President-Royal-Pro16-Pro18-Pro20:

Do not keep your foot on the drive pedal.
5a. Senator-President:

Starting cold engine – put the throttle control in the
choke position. Starting warm engine – put the
throttle control at full throttle (approx. 1 cm behind
the choke position).

5b. Royal-Pro16-Pro18-Pro20:
Putthethrottlecontrolatfullthrottle.Startingcold
engine – pull the choke control out fully. Starting
warm engine – do not touch the choke control.

6. Depress the brake pedal fully.

7. Turn the starter key and start the engine.

8a. Senator-President:
Once the engine has started, move the throttlecon­trol gradually to full throttle if the choke has been
used.

8b. Royal-Pro16-Pro18-Pro20:
Once theenginehasstarted, push the choke control

CATALYTIC CONVERTER (Pro18 ­Pro20)

The catalytic converter gets very hot during opera­tion. The heat remains for a long time after the en­gine has been stopped. Be aware of fire risk.

Do not park in close proximity to in­flammable objects. Do not c over the
machine until the catalytic converter
has cooled down.

STEERING AID (Pro20)

Built-in function in order to facilitate steering. The
operator only has to turn the steering wheel gently.
An hydraulic torque amplifier creates the remain­ing force.

As opposed to a normal servo steering (e.g. in a
car), the steering aid has a limited capacity. This
meansthatithas somecharacteristics thatmightbe
considered negative:

- at a low engine rpm or in situations where extra
steering force is needed,steeringcan be consid­ered to be “jumpy”.

- the machine should always be moving when the
steering is used. Avoid turning the steering

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wheel when the machine stands completely still
and the accessoryis in the lowered working po­sition.

The steering is adapted in order to produce better
results at a normal worki ng speed.

Even when the engine is not running, the steering
works. However, it is harder to turn in this case, if
the machine is to be manoeuvred manually.

OPERATING

Make sure that there is the correct quantity of oil in
the engine when driving on slopes (oil level on
“FULL”).

Be careful when driving on slopes. No
sudden starting or stopping when mov­ing up or down a slope. Never drive
across a slope. Move from the top and
down, and from down to the top.

The machine, equipped with original
accessories must not be driven on slopes
greater than 10º in any direction.

Reduce the spe e d on slopes and when
moving the machine in sharp turns to
prevent the mach i ne from tipping over
or that you lose control over the ma­chine.

Do not turn the steering wheel to full
lock when driving intop gearandatfull
throttle, as the machine can easily top­ple over.

Keep hands and feet well away from ar­ticulated steeringjointandseatbracket
to avoid having them squeezed. Never
operatethemachinewithouttheengine
casing.

SERVICE AND MAINTENANCE

SERVICE PROGRAM

In order to keep the machine in good condition, as
regards reliability and operational safety as well as
from an environmental perspective, STIGA’s serv­ice program should be followed.

The contents of this program can be found in the
attached service log.

work is performed by trained personnel and with
original spare parts.

At every service, the service log should be
stamped. A “fully stamped” service log is a valua­ble document that improves the machine’s second­hand value.

PREPARATIONS

Unless otherwise stated, all service and mainte­nance must be performed on a machine that is
standing still where the engine is not running.

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

Prevent involuntary engine start by al­ways stopping the engine, loosening the
spark plug cable from the spark ing
plug and earthing it. Remove the minus
(-) cable from the battery.

CLEANING

To reduce the risk of fire, keep the en­gine silencer/catalytic converter, bat­tery and fuel tank free from grass,
leaves and oil.

To reduce the risk of fire, regularly
check the machine for oil and/or fuel
leakage.

When washingthe machine with water underhigh
pressure, do not point the jet directly at the trans­mission.

Do not point jets of water directly at the engine,
use a brush or compressed air in order to clean it.

CHANGING ENGINE OIL

Change the oil for the first time after 8 hours run­ning (Senator and President after 5 hours), and
then after every 50 hours running or once a year.
Change oil when the engine is warm.

Always use a good grade of oil (service grade SF,
SG or SH).

Change the oil more often (after 25 hours of run­ning or at least once a season) if the engine has to
operate under demanding conditions or if the am­bient temperature is high.

We recommend that an authorised workshop car­ries out every service. This guarantees that the

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The engine oil may be very warm if it is
drained off directly after the engine is
shut off. Therefore, allow the engine to
cool a few minutes before draining the
oil.

1. Oil drain pipe (metal):
Unscrew the oil drain plug a t the end of the pipe.

Let the oil run out into a collection vessel. Then
take the oil to a recycling station. Do not allow
oil to get on the V-belts.

2. Screw up the oil drain plug. Make sure that the
fibre gasket and the O-ring inside the plug are not
damaged and that they are in the correct place.

3. Remove the dipstick and fill up with new oil.
Oil capacity:

Senator, President – 1.4 l
Royal – 1.9 l (including oil filter)
Pro16, Pro18, Pro20 - 1.7 l (including oil filter)

Oil type summertime (> 4º C): SAE-30
(SAE 10W-30 can also be used. However, oil con­sumption may increase somewhat if 10W/30 is
used. Therefore, check the oil level more regularly
if you use this type of oil).

Oil type winter (< 4º C): SAE 5W-30
(if this oil is not available, use SAE 10W-30).

Use oil without any additives.

Do not fill too much oil as this can result in over­heating the engine.

After filling up the oil, start the engine and idle for
30 seconds. Stop the engine. Wait for 30 seconds
and then check the oil level.

Check to see if there is any oil leakage. If neces­sary,filluptheoiluptothe“FULL”mark.

OIL F ILTER - ENG INE (Royal - Pro16

- Pro18 - Pro20)

Replace the oil filter after every 100 hours of oper­ation or once a season.

Before screwing the new fil ter, oil the filter gasket
with engine oil.

Screw the filter by hand, until the filter gasket
touches the filter attachment. Then tighten ½ to ¾
of a full turn (fig. 17 - 18).

Start the engine and idle to see if any leakage oc­curs. Switch off the engine, check the oil level. If
necessary, fill up the oil up to the “FULL” mark.

AIRFILTER-ENGINE

Clean the foam pre-filter every 3 months or after
every 25 hours of operation, whichever comes
first.

Clean the paper filter insert once a year or after
every 100 hours of operation, whichever comes
first.

NOTE! The filters should be cleaned more often if
the machine operates on dusty ground.

1. Loosen the wing nut under the fuel tank and

move it backwards (fig. 16). Also loosen the bat­tery to make it easier to get at the air filter (applies
to Pro16-Pro18-Pro20).

2.Remove the protectivecoverof theair filter(fig.

19 - 21).

3. Dismantle the paper filter insert and the foam

pre-filter. Make sure that no dirt gets into the car­burettor. Clean the air filter housing.

4. Wash the pre-filter in liquid detergent and water.

Squeeze dry. Pour a little oil on the filter and
squeeze in the oil.

5. Clean the paper filter insert as follows: Knock it

lightly against a flat surface. If the filter is very
dirty, change it.

6. Assemble in the reverse order.

Petroleum-based solvents such as kerosene must
not be used for cleaning the paper filter insert as
these can destroy the filter.

Do not use compressed air for cleaning the paper
filter insert. The paper filter insert must not be
oiled.

AIR FILTER - CATALYTIC CONVERT­ER (Pro18 - Pro20)

Clean the catalytic converter’s air filter every 3
months or after every 25 hours of operation,
whichever comes first.

1. Remove the cover by pressing in the locking

mechanism with a screwdriver, etc. (fig. 22).

2. Remove the foam filter and wash it in liquid de-

tergent and water. Squeeze dry. Pour a little oil on
the filter and squeeze in the oil.

3. Replace the filter and snap the lock into place.

SPARKING PLUG

Only use a Briggs & Stratton sparking tester to

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check the spark of the sparking plug(s) (fig. 23).
Clean the sparking plug after every 100 hours of

operation or once a season. For replacing a spark­ing plug, a sparking plug sleeve A and a torsion pin
B are provided in the accessories bag.

The engine manufacturer recommends:
Senator-President: Champion J19LM

Royal-Pro16-Pro18-Pro20: Champion RC12YC
The correct distancebetween the electrodes is 0.75

mm.

COOLING AIR INTAKE - ENGINE

The engine is air-cooled. A blocked cooling sys­tem can damage the engine. The engine should be
cleaned at least once a year or every 100 hours of
operation.

Remove the fan casing. Clean the cooling fins on
the cylinder, the fan and the rotating protective
grille (fig. 24 - 25). Clean more frequently if mow­ing dry grass.

BATTERY

Senator-President-Royal:
Lubricate the steering cables and steering chain
with universal grease a couple of times per season.

Pro16-Pro18-Pro20:
Apply universal grease to the steering chain a cou­ple of times each season.If the steering chains are
really dirty, dismantle them, wash them and then
grease them once more.

Applyuniversalgrease to all the plasticbearings a
couple of times per season.

Apply a coating of engine oil to the tension arm
joints a couple of times each season.

Apply a few drops of engine oil to both ends of the
throttle control cable a couple of times a season.

Senator:
The transmission is filled with oil (SAE 80W-90)
upon delivery from the factory. If it is not opened
(which must only be done by a specia li st), normal­ly no topping up of oil should be carried out.

STEERING CABLES (Senator ­President - Royal)

Check the acid level regularly.
The acid level should be between “UPPER “ and

“LOWER” on the battery. When adjusting the lev­el, only use distilled water (battery water).

The battery acid is extremely corrosive
and can cause burns and injuries to
skin and clothing. Always use rubber
gloves and glasses (goggles) to protect
the eyes. Avoid inhaling any acid va­pour.

Do not incline the battery too much so
that the battery acid can run out on to
hands and clothing. If this should hap­pen, flush with lots of water.

If the batteryterminals are coatedwith oxide, they
shouldbecleaned.Clean thebatteryterminals with
a wire brush and grease them.

LUBRICATION - CHASSIS

The machine’s articulated steering joint has four
grease nipples that should be lubricated with uni­versal grease after every 25 hours of operation
(fig. 26).

Please note that the fourt h grease nipple is not
shown onthepicture. Itislocated ontheunderside,
on the flexible axle’s front bearing.

The steering cables should be adjusted for the first
time after the machine has been in operation for 2

- 3 hours, and then after every 25 hours of opera-

tion.
Put the machine in the straight-ahead position.
Tensionthesteeringcablesbytighteningupthe

nuts that are located on the underside of the articu­latedsteeringjoint(fig. 27).Thescrews inthe ends
ofthecablesshouldbeheldfirmlyduringadjust­ment so that the cables are not twisted. Use an ad­justable wrench or similar for this purpose,
inserting it in the key handles in the ends of the
screws. Tension the cables until they are no longer
slack.

Adjust both the nuts the same amount to ensure
that the alignment of the steering wheel is not
changed.

Once the adjustment is complete, turn the steering
wheel as far as it will go in either direction. Check
that the chain does not come into contact with the
pulley, and that the cables do not become entan­gled with the steering pinions.

Do not tension the steering cables too hard. Other­wise the steering will be heavy and wear and tear
on the cables will increase.

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ENGLISH

STEERING CHAINS (Pro16 - Pro18 ­Pro20)

Adjust the steering chains after every 50 hours of
operation.

Put the machine in the straight-ahead position.
Tension the steering chains by tightening up the

nuts that are located on the underside of the articu­lated steering joint (fig. 27). Tension until all play
is removed.

Adjust both the nuts the same amount to ensure
that the alignment of the steering wheel is not
changed.

Do not over-tighten the steering chain. This will
cause the steering to become heavy and will in­crease wear on the steering chain.

GB

PATENT –

PROTECTION OF DES IGNS

This machine, or parts thereof, is protected by the
following patent and protection of design:

9900627-2 (SE), SE00/00250 (PCT), 9901091-0
(SE), SE00/00577 (PCT), 9901730-3 (SE), SE00/
00895 (PCT), 9401745-6 (SE), SE95/00525
(PCT), 595 7497 (US), 95920332.4 (EPC).

99 1095 (SE), 499 11 740.9 (DE), M1990 000734
(IT), 577 251-253 (FR ), 115325 (US).

STIGA reserves the right to modify the product without giv­ing any prior notice.

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