Husqvarna 968999239 User manual

Operator’s Manual
MANUAL NO. 539109280 REV. 01 (03/08/04)
Model:
968999239
SG13A / CE

2
©2004 Husqvarna.
All Rights Reserved.
Printed Beatrice, Nebraska

3
TABLE OF CONTENTS
Stump Grinder SG13A
Introduction ................................................ 4
Congratulations ..................................... 4
Use ........................................................ 4
Insure your machine .............................. 4
Good service ......................................... 4
Serial number ........................................ 4
Symbols and decals ................................... 5
Location of decals.................................. 6
Translation of instructions...................... 6
Safety instructions..................................... 7
General use ........................................... 7
Controls ................................................. 9
Operation............................................... 10
Movement/Transport.............................. 11
Storage .................................................. 11
Children ................................................. 11
Fuel System .......................................... 12
Maintenance .......................................... 13
Protective Equipment ............................... 14
Personal Equipment .............................. 14
Set-Up ......................................................... 15
Equipment set-up .................................. 15
Controls ...................................................... 18
Presentation .......................................... 18
Main Components and
Operating Instructions ........................... 18
Engine ................................................... 19
CuttingUnit ............................................ 22
Operation.................................................... 24
Starting the Engine................................. 24
Normal Shutdown .................................. 26
Shutdown in Emergency Situations....... 26
Before You Start..................................... 27
Using Your Stump Grinder ..................... 28
Operating on Hills .................................. 30
Transport ............................................... 30
Maintenance............................................... 31
MaintenanceSchedule ........................... 31
Cleaning the Cyclone Filter .................... 32
Replacing theAir Filter............................ 33
Cleaning the Sludge Reservoir............... 34
IdleAdjustment ....................................... 34
Ignition System....................................... 35
Adjusting the Drive Belt .......................... 36
Disassembling & Reassembling
the Blade, Pockets & Teeth .................... 37
Removing & Refitting the Wheels .......... 38
Adjusting theBrake................................. 38
Two MinuteRule ..................................... 39
Cleaning & Washing............................... 39
Lubrication ................................................. 40
Lubrication Schedule.............................. 40
Lubricating the Cables............................ 42
Troubleshooting ........................................ 43
Storage ....................................................... 45
Winter Storage ....................................... 45
Service ................................................... 45
Technical Data............................................ 46
Wiring Diagram ........................................... 47
Service Journal....................................... 48
Delivery Service ..................................... 48
After the First 20 Hours .......................... 48

4
INTRODUCTION
Congratulations
Thank you for purchasing a Husqvarna stump grinder. Through your confidence in us, you have
chosen an exceptionally high quality product.
This manual is a valuable document. It describes your new Husqvarna machine. Read the manual
carefully before attempting to use the machine. Following the instructions (use, service, mainte-
nance, etc.) can considerably increase the life-span of your machine and even increase its resale
value. Please contact your dealer for more information.
If you sell your Husqvarna machine, make sure to give the operator’s manual to the new owner.
Use
The stump grinder is used to remove tree stumps. By moving the blade in sweeping movements
laterally over the top and front of the stump, you can gradually grind it away. Read the chapter
“Safety instructions” before you use the machine for the first time.
Insure your machine
Contact your insurance company to check on insurance coverage for your new machine. You
should have all-inclusive insurance for liability, fire, damage and theft.
Good service
Husqvarna products are sold all over the world and only in specialized retail trade with complete
service. This ensures that you as a customer receive only the best support and service. Before the
machine was delivered it underwent inspection and was adjusted by your dealer. When you need
spare parts or support in service questions, guarantee issues, etc., please consult the following
professional:
This Operator’s Manual belongs to machine with
serial number: Engine number:
Serial number
The serial number can be found on the printed plate attached to the frame in front of engine. The
plate includes the following information:
•The machine’s type designation (MODEL).
•The machine’s serial number (S/N).
Please state the type designation and serial number when ordering spare parts.
The engine’s serial number is punched in the crankcase under the oil level guard.
The engine type is specified on the crankcase to the right of the oil level guard but also appears on
the decal on the starter.
Please state these when ordering spare engine parts.

5
SYMBOLS AND DECALS
WARNING!
Xxxx xxx xxxx xx xxxx x xxxx.
Usedinthis publicationtonotify the reader ofa risk
of personal injury, particularly if the reader DOES
NOT follow the instructions given in the manual.
IMPORTANTINFORMATION
Xxxx xxx xxxx xx xxxx x xxxx.
Usedin this publication tonotify the reader ofa risk
ofmaterial damage,particularly ifthereader DOES
NOT follow the instructions given in the manual.
Used also when there is a potential for misuse or
misassembly.
Decals and machine-bound instructions
1. Husqvarnalogo
2. Husqvarnalogo
3. General precautions
4. Exhaust warnings
5. Use ear and eye protection
6. DANGER risk for injury from cutter blade
1
2
34
5
6
7
8
9
10
Decals that are missing or illegible should be re-
placed before using the machine.
7. Modeldesignation SG13A
8. Engine switch on the handle
9. Throttle
10. Handle adjustment
11. No step
12. Sound power
11
12

6
SYMBOLS AND DECALS
Location of decals
Translation of instructions
Decal 3
Important information
Read and make sure you understand the
Operator’s Manual before use or maintenance.
To obtain a replacement manual, please contact
yourdealer.
Observeallsafety instructions; otherwise youmay
injure yourself or others around you.
Make sure that the machine is in serviceable con-
dition prior to use.
Stop the engine and wait until all machine move-
ment comes to a standstill before service, adjust-
ment or cleaning.
Do not run the engine in poorly ventilated spaces.
Make sure nobody is in the vicinity of the machine
before starting and during use.
Avoid slopes that are too steep to use the ma-
chine safely.
Clear any debris prior to use.
Decal 4
Warning
Engine exhaust, some of its constituents and cer-
tainvehiclecomponents contain or emit chemicals
considered by the Sate of California to cause can-
cer, birth defects or other reproductive harm. The
engine emits carbon monoxide, which is a color-
less, poisonous gas. DO NOT use the machine in
enclosed spaces.
Decal 8
O = off, I = on
Decal 9
Rabbit = Fast engage clutch.
Turtle = Slow disengage clutch.
Decal 10
Handleadjustment.
1
2
3
4
5
6
7
8
9
10
11
Decal 5
Wear goggles or safety glasses and ear protec-
tions when using the unit.
Decal 6
There is DANGER to your feet from the cutting
blades.
Decal 11
No step.
12
Decal 12
Sound power rating.

7
SAFETY INSTRUCTIONS
WARNING!
Underno circumstances may the original
design of the machine be modified
without written approval from the
manufacturer. Such modifications not
only affect the performance and
durability of the machine but may even
pose a safety risk for users and those in
the vicinity. Unauthorized modifications
to the design of the machine may
absolve the manufacturer from liability
for any resulting personal injury or
propertydamage. Modifying the machine
without written approval from the
manufacturer may void the guarantee.
General use
The object of this manual is to help you use your
Husqvarna machine safely and to give you
information about how to maintain your machine.
Pleaseread the manualcarefullybeforeattempting
to use the machine.
If after reading the operator’s manual you are still
unsure about the safety risks associated with use
of the machine, you should not use the machine.
Please contact your dealer for more information.
These safety instructions only address the basics
for safe use. It would be impossible in the safety
instructions to describe all possible risk situations
that could arise when using the machine. You can,
however, prevent accidents by always using
common sense.
To obtain extra copies of the operator’s manual,
please contact your dealer.
• Readthismanual carefully and make sureyou
understand it before using the machine or
performingany maintenance.Iftheuser cannot
read this manual, it is the responsibility of the
machine owner to explain the contents to the
user.
IMPORTANT INFORMATION
Do not use the machine until you have
read the operator’s manual carefully and
understand the instructions given. All
maintenance work or adjustments not
described in this manual must be
performed by an authorized Husqvarna
service workshop.
WARNING!
The stump grinder can be dangerous if
used improperly or with out due care and
can lead to serious accidents, in the
worst cases even fatal accidents. It is
very important that you read this
operator’s manual and understand the
instructions before you attempt to use
the machine.
8011-208chg
Read this manual carefully before starting the machine.

8
• Husqvarna original spare parts are designed
and specified to maintain high quality and
correct fit for optimal durability and life-span.
From a safety point of view, you should only
use Husqvarna original spare parts.
•Learn how to use the machine and its controls
safelyandlearntorecognizethe safety decals.
•Onlyusethemachine forremovingtree stumps.
It is not intended for any other use.
• Check that the machine is in serviceable
condition prior to use; see the chapter
”Maintenance/Maintenanceschedule”.
• Onlyusethemachineindaylight orinotherwell-
litconditions. Keep themachineasafe distance
from holes or other irregularities in the ground.
Pay attention to other possible risks.
• Only allow the machine to be used by adults
who are familiar with its use.
• Follow all safety instructions. Failure to do so
may result in injury to yourself or others.
• Accidentprevention regulations,othergeneral
safety regulations, occupational safety rules
andtrafficregulationsmustbefollowed without
fail.
• Allusersshallbe trainedinuse ofthemachine.
The owner is responsible for training users.
• Engage an authorized Husqvarna workshop
forallserviceand repairs not described in this
manual.
• Never allow children or persons not trained in
the use of the machine to use or service it.
Local laws may regulate the age of the user.
• People and animals can distract you causing
you to lose control of the machine. For this
reason, you should always concentrate and
focus on the task at hand.
• Neverleave the machineunsupervisedwiththe
enginerunning.
• Make sure that other people are nearby when
you are using the machine so that you can call
for help should an emergency arise.
• The machine is tested and approved only with
the equipment originally provided or
recommended by the manufacturer.
Overexposure to vibration may lead to
circulatory or nerve damage, particularly
in people who have impaired circulation.
Contact your doctor if you experience
symptoms that could have been caused
by overexposure to vibration. Examples
ofcommonsymptomsincludenumbness,
pain, muscle weakness, change of skin
color or an uncomfortable feeling of
tingling. These symptoms appear most
frequently in the fingers, hands or wrists.
WARNING!
The engine can become very hot. To
avoid being burned, you must turn off the
engine and wait until all parts have
cooled before touching the engine.
WARNING!
IMPORTANT INFORMATION
Never use a stump grinder that is
damaged or incorrectly adjusted. Never
use the stump grinder if any component
is missing or if it is not properly
assembled. Check that the cutting tools
stop rotating when you reduce the throttle.
If you find yourself in a situation where you
are not sure what to do, always seek
expert assistance. DO NOT try to attack
any problem you are not qualified to
resolve.
SAFETY INSTRUCTIONS

9
SAFETY INSTRUCTIONS
• Make sure nobody else is in the vicinity of the
machinewhen you starttheengine,engagethe
drive or run the machine.
• Makesure animals and people maintaina safe
distance from the machine.
• Clear the area of objects such as stones, toys,
steel wire, etc. that could become caught in
moving machine parts and thrown out.
• Find and locate all fixed objects in the ground,
suchassprinklersystems,poles,water valves,
bases for washing lines, etc. Be certain to
check for hidden electrical cables or similar in
thesurface of thelawn.Alwaysrun themachine
around these objects. Never intentionally run
the machine over foreign objects.
• Check that the dead man’s grip and all guards
are fitted and functioning. DO NOT use the
machine if it is not working properly.
• Makessure no clothing, long hairorjewelrycan
catch in moving machine parts.
•Check that all safety decals are in place. See
the chapter “Location of decals”.
•Use mouth protection, protective gloves with
goodgrip and protectiveclothingwhichyoucan
move unrestricted. Also use leg protection to
protect your legs from sparks and the cutting
tools.
• Neveruse the machine when barefoot.Always
wear protective shoes or protective boots with
anti-slip and preferably with steel toes.
• Use a helmet with a full face visor or a mesh
visor and protective glasses. Wear approved
ear-protection when running the machine.Ask
yourdealeraboutapprovedprotectiveglasses,
ear protection and recommended helmets.
Preparations
• Make sure that you always have first aid
equipment at hand when using the machine.
Always use approved protective clothing
and approved protective equipment when
using the machine. Protective clothing and
protective equipment cannot eliminate
the risk of accidents, but wearing proper
clothing and the correct equipment will
reduce the degree of injury should an
accident occur. Ask your dealer about
approved protective clothing and
approved protective equipment
recommended by Husqvarna.
WARNING!
8011-198
Clear the work area before beginning work.
8011-189
Use appropriate equipment.

10
SAFETY INSTRUCTIONS
Operating
•DO NOT use the machine on grades of more
than 10°.
•DO NOT use the machine if you are tired, if
youhave consumed alcohol,orifyou are taking
other drugs or medication that can affect your
vision, judgment or coordination.
• Never use the machine indoors or in spaces
lackingproperventilation.
• Make sure you have a proper foothold when
using the machine, particularly when backing.
Walk, don’t run. Never work on wetgrass.Poor
traction may cause you to slip.
• Keep your hands and feet away from moving
parts.
• Keep your hands and feet away from the work
tools.
•DO NOT use your feet or other parts of your
body to gain greater bearing pressure against
the stump.
• Smoking, open flames or sparks in the vicinity
ofthe machine are strictly forbidden. Gasoline
is extremely flammable and carelessness in
handling can result in personal injury or fire.
•Never use a machine with a defective muffler.
•In very warm and dry climates, stump grinder
operation poses a risk of forest fires.
• Stop and inspect the equipment if you run over
or into anything. If necessary, make repairs
beforebeginningagain.
• Whateverhappens, you shouldalwaysparkthe
machineon even ground, disengage the drive,
activatethe parking,turnoffthe engineandwait
until all moving parts have stopped before
leaving the operating position behind the
machine.
8011-209chg
The engine exhaust is poisonous. Never run the engine indoors.
8011-091
Make sure you keep your hands and feet away from moving
parts.
8011-291chg
Smoking near the machine is strictly prohibited.
Engine exhaust, some of its constituents and certain vehicle components contain or emit
chemicals considered to cause cancer, birth defects or other reproductive harm. The
engine emits carbon monoxide, which is a colorless, poisonous gas. Do not use the
machine in enclosed spaces.
WARNING!

11
SAFETY INSTRUCTIONS
Movement/Transport
• To turn and steer the machine, press down on
the handle and turn on the back wheels.
• Turnoffthe engine and allow it to cool at least 2
minutes before transport.
• Collapsethehandle if the machine isequipped
with a collapsible handle.
• Be careful and use safe lifting and moving
techniques when loading/unloading the
machine.
• We recommend having two people to lift the
machine.
•Activate the parking brake during transport.
• Fasten the machine properly in place with
approved fasteners, such as tension belts,
chains or rope. Always check that you are in
compliance with applicable traffic regulations
before transporting the machine.
Storage
• Allow the engine to cool before storing the
machine.Neverstorethemachinenearaopen
flame.
• Store the machine with the fuel valve closed.
• Store the machine and fuel in such a way that
there is no risk that leaking fuel or fumes can
come in contact with flames or sparks from
electrical machines, electric engines, relays,
switches, boilers or similar.
• Storethe machine in a locked space away from
children and adults untrained in use of the
machine.
Children
Serious accidents can occur if you fail to be on
guard for children in the vicinity of the machine.
Neverassume that children will stay put where you
last saw them.
• Keep children away from the machine.
• Keep children away from the work area and
under close supervision by another adult.
• Keep an eye out and shut off the machine if
children enter the work area.
• Never allow children to operate the machine.
• Be particularly careful near corners, bushes,
trees or other objects that block your view.
We recommend having two people lift the machine.
8011-207chg
Keep children away from the machine.
Never allow children to operate the machine.
8011-278chg
8011-206chg

12
Fuel system
• Only store fuel in containers approved for that
purpose.
• Never remove the fuel cap and fill the fuel tank
when the engine is running.
• Always stop the engine when refueling.
• Donotsmokewhenfilling thegasolinetank and
do not pour gasoline in the vicinity of sparks or
open flame.
• Never fill the fuel tank indoors.
• Before starting the machine after refueling, it
should be moved at least 10 feet (3 M) from
the location where it was filled.
• Turnoffthe fuel supply for storage or transport.
• Ifleaksarisein thefuelsystem, theenginemust
not be started until the problem has been
resolved.
• Checkthefuellevelbeforeeachuseand leave
spacefor the fuel to expand, because the heat
from the engine and the sun can otherwise
cause the fuel to expand and overflow.
• Avoid overfilling. If you spill gasoline on the
machine, wipe up the spill and wait until it has
evaporated before starting the engine. If you
spill gasoline on your clothing, change your
clothing.
WARNING!
Gasoline and gasoline fumes are
poisonous and extremely flammable.
Be especially careful when handling
gasoline, as carelessness can result
in personal injury or fire.
SAFETY INSTRUCTIONS
8011-205chg
Never fill the fuel tank indoors.
8011-186
Close the fuel valve.
FUEL VALVE
8011-222chg
Fueling always poses an element of risk.

13
SAFETY INSTRUCTIONS
Maintenance
• Never make adjustments with the engine
running.
• Disengage the drive units, shut off the engine
and wait until all moving parts come to a
complete stop before making adjustments,
performing maintenance or cleaning the
machine.
• Disconnect the spark plug cable before
beginningrepair work.
• Keep all components in serviceable condition
and make sure all nuts, bolts, etc. are tight.
Replace worn or damaged decals.
• Be careful when checking work tools. Use
gloves when performing maintenance work.
• Never allow persons not trained in the use of
the machine to perform service on it.
• Alwaysparkthemachineonevengroundbefore
performing maintenance or making
adjustments.
• Do not disassemble the engine. This can
invalidate your engine warranty. Contact your
dealer if you have any questions regarding
service or guarantee matters. Follow all
maintenance instructions.
• Do not change the setting of governors and
avoidrunning the engine with overlyhighRPM.
Ifyourunthe enginetoofast, youriskdamaging
the machine components.
• Do not modify safety equipment. Check
regularly to be sure it works properly. The
machine must not be run with defective or
disassembled safety equipment.
• Themufflerisdesignedtomaintainsoundlevels
at an approved level and keep direct exhaust
away from the user. Exhaust gases from the
engine are extremely hot and may contain
sparks that can cause fires or burn the user.
• Never use a machine with a defective muffler.
• Reduce the risk of fire by removing grass,
leaves and other debris that may have caught
in the machine.
WARNING!
Wait until all moving parts are completely
still before performing maintenance on
the machine.
Turn off the engine and remove the
spark plug cable.
8011-027
Remove the spark plug cable.
8011-210chg
Keep the machine clean.

14
PROTECTIVE EQUIPMENT
Personal equipment
Consult your Husqvarna dealer when selecting
protective equipment. Our dealers have a broad
assortment of equipment for professionals such
as forestry workers and knowledge about
occupational environment requirements and
protectivelevels.
Before using the stump grinder, you may in many
cases need to cut back the object with a power
saw. Hence, it is appropriate to use personal
protective equipment that fulfils requirements for
working with both stump grinders and power
saws.
The main difference is that you should wear
protective glasses when operating the stump
grinder while the wire mesh visor gives sufficient
protection when using a power saw. Thus when
using the stump grinder, we recommend using
both a wire mesh visor to protect your face and
protective glasses. Alternatively, you can use a
Plexiglas face guard, but it scratches more easily
and is more susceptible to soiling and fogging.
You require the following personal protective
equipment:
1. Protective helmet (hard hat)
2. Ear protection
3. Face guard
4. Protective trousers
5. Protective glasses
6. Breathing protection (risk of dusty work
environment)
7. Protective gloves
8. First aid kit
9. Protective boots or steel-toed shoes
8011-027

15
WASHER
(1)
COTTER PIN
(1)
BRAKE
HANDLE
BRAKEROD
ASSEMBLY
SET-UP
Equipment set-up
1. Remove crate top and sides.
2. Remove upper handle bar assembly and lay
aside.
3. Open bag containing loose hardware.
4. Using four (4) screws, flat washers and nuts
attachtheupperhandle bar assembly to lower
handle bar assembly. See Figure 1.
NOTE: Handlefitistight. When aligning holes use
a tapered type pilot to help align holes (i.e.
punch or phillips style screw driver).
5. Attach the position adjusting rod to bracket on
the lower and upper handle bar assemblies.
See Figure 1.
6. Assemble the compression spring, two (2) flat
washersandyoke to brake rodassembly. See
Figure 2. Screw yoke onto the rod assembly
till rod is even or thru threaded portion of yoke
about 1/4” (6.35 mm).
7. Attachbrake rod assembly to brake handleon
the upper handle bar assembly. See Figure 3.
FIGURE 1
FIGURE 2
FIGURE 3
WASHERS
SPRING
YOKE
BRAKEROD
ASSEMBLY
HARDWARE
LOWERHANDLEBAR
ADJUSTING
ROD
WASHERS
(2)
UPPERHANDLEBAR
COTTER PINS
(2)
COTTER PIN
(1)

16
8. Attach the yoke to the brake’s top mounting hole
using the clevis pin and cotter pin. Make sure
the rod is positioned in the bracket as shown in
Figure 4.
SET-UP
FIGURE 4
NOTE: Adjust the brake before inserting hair pin.
To engage brake, pull back on handle until brake
rod assembly goes “over center” and locks the
brakeON.Turning the yoke clockwise shortensthe
rodtighteningthegriponthebrakediscbythebrake
pads. counterclockwise loosens the clamping
force. Proper brake adjustment is such that the
wheel will not turn, but slide, when handle is over
center.
9. Removeair cleaneranddouble wireclampfrom
engine. Figure 5.
10. Route the wire harness from engine through
guide and handle crossmember. Figure 6.
11. Routethe throttlecablethrough guide on lower
handle assembly. Figure 6.
12. Connectupperandlower wireharnesstogether.
Yellow to yellow and black to black.
13. Push throttle control lever on console forward
tofull extent.Pullthrottlecontrol lever onengine
back as far as possible. See Figure 7.
FIGURE 5
FIGURE 6
CLAMP
THREADWIREHARNESS
AND THROTTLE CABLE
GUIDE
CLEVIS PIN (1)
HAIR PIN (1)

17
FIGURE 7
SET-UP
FIGURE 8
14. Insert“L”endofthrottlecableintotheoutsidehole
of the engine throttle control lever. Figure 7.
15. Attach the throttle cable to the engine using the
doublewireclampremovedinstepnine.Figure8.
16. Test throttle control by pulling back throttle
handle on console. Throttle arm on engine
should be pushed completely forward. Cable
should not slip in clamp when doing this test.
17. Testproperwirelengthbypullingonthehandle
adjustment lever and raising and lowering the
handle to maximum position without any pull
on harness.
18. Reattach air cleaner to engine.
19. Unit is now ready to be removed from pallet.
THROTTLE
CABLE
THROTTLE
CABLE
ENGINE
THROTTLE
CONTROL
LEVER
FORWARD

18
CONTROLS
Presentation
Congratulationson your choice of an exceptionally
high quality product. This operator’s manual
describes the Husqvarna stump grinder.
Themachineisequippedwitha13hpHondafour-
cycle engine.
Main components and operating controls
1. Handle
2. Dead man’s grip bar
3. Brakelever
4. Belt guard for the cutter drive
5. Frontlifting handle
6. Cutting wheel
7. Engine
8. Rearlifting handle
9. Adjustment bar for the handle
10. Throttle
11. Engine switch
1
2
3
4
5
6
7
89
10
11
5
8

19
Engine
Exterior engine components and controls.
1. Throttle
2. Starter
3. Starter handle
4. Fuelvalve
5. Choke control
6. Airfilter
7. Sparkplug
8. Muffler
9. Oil dipstick
10. Oil drainage
11. Oil level guard
12. Engine switch - disconnected use switch on
handle bar
13. Fueltank
14. Fuel filler cap
CONTROLS
Throttle
The lever on the engine is normally not used. It is
connectedto the throttle on the handle. If the cable
should bind or break, you can reduce the throttle
with the lever on the engine as an emergency
measure to slow the engine speed to an idle and
stop the cutting wheel.
8011-126
8011-273chg
8011-034
THROTTLE
LEVER
911
12
10
14
13

20
CONTROLS
Starter
The starter is of the magnapull type with spring
return. To replace the return spring or starter cord,
contact an authorized service workshop.
Starter handle
Misuseofthestarterhandlecan damagethestarter.
Do not twist the starter cord around your hand.
Pullout the handle slowly untilthe gears mesh. Do
not pull out the starter cord completely and do not
let go of the starter handle when extended.
Fuel valve
The fuel valve opens and closes the connection
between the tank and the carburetor.
The illustration shows the tank valve closed; to
open, turn the lever completely to the right. There
is no middle position.
Turn off the valve when the machine is not in use
to avoid flooding the carburetor.
Thefuel valve is combined witha sludge reservoir.
Choke control
The choke control opens and closes the choke
valve in the carburetor. This is only used to start a
cold engine.
The image shows the choke valve open; to close,
move the lever to the left. The midway positions
canbeused.Whenthe engine starts, the lever can
be moved gradually to the right as long as it
continues to run smoothly. Forgetting the choke is
evident as the engine runs roughly and produces
black smoke.
This also results in increased fuel consumption.
Airfilter
The engine air filter consists of a cyclone filter and
a fine filter.
Airisdrawninthrough thescreen(3) onthecyclone
filterand coarser pollutants collectin the container
(4).
Thefine filter,which consistsof a foam rubberpre-
filter and a paper filter cartridge, is located under
the cowling (2). The cowling and the cyclone filter
can be removed by removing the wing nut (1).
See the chapter “Maintenance/Cleaning the
cyclonefilterandReplacingtheairfilter”forcleaning
instructions.
Runningthemachinewithadirtyairfilterwillcause
the engine to run on partial choke and show the
same symptoms as a forgotten choke described
above. It can also be difficult to start.
8011-127
8011-186
8011-183
8011-188
CHOKE
CONTROL
FUEL
VALVE