Global garden products WBE 0701 Instruction manual

Th e m a n u f a c T u r e r r e s e r v e s T h e r i g h T T o m a k e a l l T h e n e c e s s a r y T e c h n i c a l o r c o m m e r c i a l im p r o v e m e n T s T o
i T s p r o d u c T s , s o T h e r e m a y b e s o m e d i f f e r e n c e s b e T w e e n T h e s e r i e s o f e n g i n e s a n d T h e c o n T e n T s o f T h i s m a n u a l .
ho w e v e r T h e b a s i c specificaTions a n d d i f f e r e n T o p e r a T i n g p r o c e d u r e s w i l l r e m a i nT h e s a m e .
© b y global garden producTs nou s e o f T h e i l l u s T r a T i o n s o r duplicaTion, r e p r o d u c T i o n o r
T r a n s l a T i o n , e v e n p a r T i a l , o f T h e T e x T s in T h i s d o c u m e n T m a y b e m a d e w i T h o u T e x p l i c i T a u T h o r i z a T i o n .
al l b r a n d s , n a m e s , l o g o s a n d T r a d e m a r k s m e n T i o n e d b e l o n g T o T h e i r r e s p e c T i v e o w n e r s .
Rel. 0.1
WORKSHOP
MANUAL
WBE 0701 - WBE 0702
WBE 0704
WBE 0701 - WBE 0702
WBE 0704
PRODUCTION YEAR 2009

Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 3Service manual
INTRODUCTION..................................................................................................... 6
1. RULES AND PROCEDURES FOR SERVICE CENTRES .......................................... 7
1.1. Guarantee validity ...................................................................................................................................7
1.2. Service repairs after guarantee period..................................................................................................7
1.3. Faultnotication.......................................................................................................................................7
1.4. Spare parts request..................................................................................................................................7
2. GENERAL AND SAFETY REGULATIONS............................................................. 8
2.1. Qualicationofoperators .......................................................................................................................8
2.2. Safety measures.......................................................................................................................................8
2.3. Precautions during servicing...................................................................................................................8
2.4. Etichette di sicurezza ...............................................................................................................................9
2.5. Necessary equipment .............................................................................................................................9
2.6. Symbols and terms used for safety purposes........................................................................................9
3. TECHNICAL DATA AND SPECIFICATIONS...................................................... 10
3.1. Identication...........................................................................................................................................10
3.2. Technical data .......................................................................................................................................10
3.3. Adjustments ............................................................................................................................................10
3.4. Expendable materials............................................................................................................................10
3.5. Use limits..................................................................................................................................................10
3.6. Tightening torques..................................................................................................................................11
3.7. Table of Tightening torques ...................................................................................................................12
3.8. Identicationofengineunits.................................................................................................................13
4. ENGINE TUNING AND TESTING ...................................................................... 14
4.1. Operating guidelines .............................................................................................................................14
4.2. Engine tuning program..........................................................................................................................14
4.3. Functional test ........................................................................................................................................15
5. TANK AND SUPPLY.......................................................................................... 16
5.1. Emptying and removing the tank.........................................................................................................17
5.2. Cleaning the tank ..................................................................................................................................17
5.3. Checking and cleaning the breather pipe .........................................................................................18
6. STARTING SYSTEM ( manual starter) ........................................................ 19
6.1. Removing the starter assembly ............................................................................................................19
6.2. Replacing the rope ................................................................................................................................19
6.3. Replacing the hooks..............................................................................................................................20
7. STARTING SYSTEM ( electric starter)......................................................... 21
7.1. Removing the starter motor.....................................................................................................................21
7.2. Disassembly and cleaning the starter motor pinion.............................................................................22
CONTENTS
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pag. 4Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
8. INTAKE SYSTEM ............................................................................................... 23
8.1. Maintenanceoflteringelement( paper) ....................................................................................23
8.1a.Maintenanceoflteringelement( sponge)..................................................................................25
9. CARBURATION................................................................................................ 26
9.1. Removing and cleaning the carburettor .............................................................................................26
9.2. Sostituzione del carburatore .................................................................................................................29
9.3. Adjusting minimum speed ....................................................................................................................29
9.4. Adjusting maximum speed...................................................................................................................29
9.5. Adjusting the carburation......................................................................................................................29
10. GOVERNOR SYSTEM OF THE CARBURETTOR ............................................... 30
10.1. Adjusting of accelerator cable ............................................................................................................30
10.2. Adjusting maximum speed...................................................................................................................31
10.3. Replacing the lever support..................................................................................................................32
11. IGNITION....................................................................................................... 33
11.1.Checkingtheefciencyoftheignitionsystem ..................................................................................33
11.2. Checking the starter micro switch ( Version with the electric starter mounted on the grass cutter) .....34
11.2a. Replacing the micro switch ( version with the electric starter mounted on the grass cutter)3 4
11.3. Adjusting the air gap and checking the coil ......................................................................................35
11.4. Replacing the coil..................................................................................................................................36
12. TURNING OFF AND STOPPING THE ENGINE ................................................ 37
12.1. Checking the control cable..................................................................................................................37
12.2. Checking the ignition off microswitch .................................................................................................37
12.3. Checking the brake...............................................................................................................................38
12.4. Replacing the system for turning off and stopping the engine .........................................................39
13. EXHAUST SYSTEM .......................................................................................... 40
13.1.Removingandreplacingthemufer ...................................................................................................40
14. ENGINE BLOCK - External operations ........................................................ 41
14.1. Checking the compression...................................................................................................................41
14.2. Adjusting the valve clearance .............................................................................................................42
14.3. Dismantling and cleaning the cylinder head .....................................................................................43
14.4 Overhauling the cylinder head and valves ........................................................................................44
14.5.Dismantlingandreplacingthemagnetoywheel .............................................................................46
14.6. Alternator removal and replacement ( electric starter version)...............................................47
14.7. Checking the oil breather .....................................................................................................................48
14.8.Replacingtheuppercompressionringoftheengineshaft(ywheelside) ....................................48
14.9. Replacing the lower compression ring of the engine shaft (sump side)..........................................49
INDICE
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Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 5Service manual
15. ENGINE BLOCK - Overhauling internal parts............................................. 50
15.1. Removing the engine ( from the lawnmower)...............................................................................50
15.1a.Removing the engine ( from the tractor) ......................................................................................50
15.2. Carter opening .......................................................................................................................................51
15.3. Dismantling and checking the camshaft and counterweight governor..........................................52
15.4. Dismantling and checking the piston, piston rings, connecting rod and engine shaft ..................54
16. TROUBLESHOOTING...................................................................................... 60
INDICE
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pag. 6Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
The purpose of this manual is to provide to Service
Centres the information necessary for a correct
maintenance, dismantling and repair procedure
for engines WBE 0701, WBE 0702 and WBE 0704.
Interventions on the engine must be performed in
accordance with instructions in the following pages
and with safety regulations in force in the country in
which the engine is operated, and only by authori-
sed and appropriately trained personnel.
In every manual page the following informations
are described:
pag. 16 Release 00 - 02/2008
Motore WBE 0701-WBE 0704
Manuale d’officina
5.1. Svuotamento e rimozione del serbatoio
1 - Rimuovere la fascetta (1) del tubo benzina (2)
dal lato del serbatoio e raccogliere in un conte-
nitore adeguato tutto il carburante presente nel
serbatoio e nel tubo.
2 - Svitare le due viti laterali (3), il dado posteriore
(4) e togliere il serbatoio (5).
3 - Al montaggio seguire a ritroso le procedure
sopra indicate
ATTENZIONE: Prima di riempire il serbatoio
con nuovo carburante accertarsi che il tubo
benzina sia integro.
5.2. Pulizia del serbatoio
1 - Rimuovere il serbatoio [5.1].
2 - Rimuovere la fascetta (1) dal lato del serbatoio
e scollegare il tubo benzina (2).
3 - Sfilare il gambo del filtrino (6) e soffiare aria
compressa in modo da rimuovere idepositi presenti
all’interno.
4 - Tenendo chiuso il foro (7) del tubetto, immettere
circa 100 cl. di benzina pulita e agitare con forza
per pulire l’interno del serbatoio.
5. SERBATOIO E ALIMENTAZIONE
5
3
43
6
7
6
2
A: Motor typ for which the page is valid.
B: Reference to the chapter and the argument
with the relative numbering.
C: Presence of previous or following chapters from
the present chapter.
D: Issue date or possible audit.
E: Audit number.
F: Page progressive numbering.
Certain symbols are used in the manual, highlighting
particularly important information, risks, warnings
and prescriptions:
Warns of operations that should be carried
out with utmost care to avoid impairing the
functionality and safety of the lawnmower.
Warns of operations that should be carried
out with utmost care to avoid injury to the
operator
 NOTE:Referstospecicadvicebythema-
nufacturer.
Reference to another procedure or part of
the manual.
Recommends that washers and O-rings are
checked and replaced if necessary.
Refers to use of special tools.
Shows all the operations requiring different
intervention methods depending on the en-
gine version.
NOTE: During the description of procedures,
the indications “right”, “left”, “front”, “rear”,
“upper” and “lower” refer to the engine
mounted on the lawn tractor seen from the
user’s perspective.
Please read all the contents of this manual to be-
come familiar with the basics of the engine, which
is fundamental for operating in a logical manner
without making errors or wasting time.
INTRODUCTION
A
B
C C
DEF
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INDEX

Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 7Service manual
1.1. Guarantee validity
The warranty is supplied under the terms, procedu-
res and limits stated in the contract.
1.2. Service repairs after guarantee period
The Service Centre must write a report for each
intervention containing the serial number of the
engine [ 3.1], and summary information about
the problems complained of, the intervention made
and possible spare parts used..
A copy of these reports must be kept and made
available to the manufacturer together with the
replaced parts, in case clients should make further
complaints.
1.3. Faultnotication
The manufacturer should be informed of all faults
that recur frequently; this allows it to carefully exa-
mine the problem and make corrections on the
production line.
Similarly, the manufacturer shall report any faults
traced on its engines, indicating the best trouble-
shooting procedure.
1.4. Spare parts request
When asking for spare parts, you must quote
their code by referring to the exploded views
corresponding to the year of manufacture reported
on the nameplate [ 3.1].
1. RULES AND PROCEDURES FOR SERVICE CENTRES
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INDEX

pag. 8Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
2. GENERAL AND SAFETY REGULATIONS
IMPORTANT: Before commencing with any
intervention, carefully read the information
provided in the present manual, in particular
the following safety regulations.
2.1. Qualicationofoperators
All maintenance, disassembly and repairs must be
carried out by expert mechanics who are familiar
with all the accident prevention and safety regu-
lations after reading through the procedures in this
manual.
2.2. Safety measures
All the engines are built in conformity with the Eu-
ropean safety regulations in force.
To maintain initial safety levels in the long term, the
Service Centre should take proactive measures by
making checks whenever possible.
Every time you are asked to service the engine
(or the lawnmower on which it is installed), you
should:
• check:
- that the safety devices function correctly;
- that the casings and protection covers have not
been removed;
- thatthenameplatesorspecicationlabelshave
not been removed or made illegible, (as they
form an integral part of the safety devices).
• also:
- restore to proper working order any safety de-
vices which have been manipulated or remo-
ved;
- replace ineffective, damaged or missing guards
and covers;
- replace illegible labels;
- donotcarryoutoperationsormodicationson
the lawnmower or on the engine that could af-
fect their performance or lead to an improper or
different use from the one for which it has been
designed and approved;
- warn the customer that the failure to comply
with the above points automatically voids the
warranty and the responsibility of the manufac-
turer.
2.3. Precautions during servicing
As well as following the usual accident prevention
regulations that apply to most repair shops, we
recommend you:
- disconnect the spark plug cap before servi-
cing;
- protect hands with suitable working gloves,
especially when working near the cutting unit;
- check that you do not cause accidental petrol
leaks or other losses;
- do not smoke when working on the tank or when
handling petrol;
- do not inhale oil or petrol fumes;
- clean up all traces of spilt petrol immediately;
- test the engine in a well-ventilated environment
or where there are adequate exhaust fume ex-
traction systems;
- do not pollute the environment with oil, petrol or
other waste and dispose of all waste in accor-
dance with the laws in force;
Exhaust gas contains carbon monoxide,
which is highly toxic, odourless and co-
lourless. Avoid inhaling.
- Perform tests on the engine in a well-ven-
tilated environment or in the presence of
adequate exhaust gas extraction systems.
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INDEX

Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 9Service manual
2. GENERAL AND SAFETY REGULATIONS
2.4. Etichette di sicurezza
On the canopy motor, in a immediately identica-
tion position, are some indication or prescription
plates for the safety operator.
The plates are as follows:
• ••• ••••
WBE07XX XXX
1 - Fire hazard due to:
- Petrol or oil
Prevent by following the precautions below:
- Do not smoke or ignite a ame in the vicinity of
the petrol or oil;
- Turn engine off before adding petrol;
- Do not spill petrol on overheated or electric parts
of the engine;
- Handle or store petrol or oil in well-ventilated
areas;
- Use non-flammable oil for cleaning engine
parts.
-Accumulationofammablematerial
Prevent by following the precautions below:
- Remove dry leaves, chips, pieces of paper, dust or
other ammable material which has accumulated
in or is attached to the engine..
- Electrical cabling
Short circuits can cause res. Prevent by following
the precautions below:
- Always keep the electrical connections of the
machine clean and tightly sealed;
- Tighten any loose connectors or cabling clamps.
Replace those that are damaged.
2 - Observe the instructions and warnings contained
in the present manual and on the safety plates on
the engine.
Inappropriate functioning and maintenance can
result in serious injury or even death.
3 - Ventilation of closed areas:
In the event that it is necessary to start the engine
in a closed environment or if petrol or cleaning oil
is being used, open doors and windows to ensu-
readequate ventilation and, therefore, avoid gas
poisoning.
4 - Motor label (see [ 3.1])
2.5. Necessary equipment
All the operations can be carried out with the tools
normally used in a good garage.
The ,symbol used for certain interventions
indicates that special tools or equipment are re-
commended.
2.6. Symbols and terms used for safety purposes
Some paragraphs in this manual are preceded by
symbols which indicate the following:
Operations that should be carried out with ut-
most care to avoid impairing the functionality
and safety of the engine and/or lawnmower
on which it is installed.
Operations that should be carried out with
utmost care to avoid injury to operators.
“WARNING” stresses the risk of injury to oneself
and others if instructions and regulations are not
observed.
1 2 3
4
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INDEX

pag. 10 Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
3.1. Identication
Every motor is marked with a serial number on the
base and applied on the canopy; this serial number
characters and can identify:
• ••• ••••
WBE07XX XXX
The serial number must be reported on every opera-
ting sheet in the warranty application and is funda-
mental for identifying and ordering spare parts.
Daily progressive
number
3. TECHNICAL DATA AND SPECIFICATIONS
3.4. Expendable materials
WBE
0701
WBE
0702
WBE
0704
Petrol Unleaded (green)
minimum 90N.O.
Engine oil - da 5 a 35 °C
- da -15 a + 35°C
SAE 30
10W30
Spark plug
RC12YC (Champion)
or equivalent
Starter rope ø 3,5x2500 mm
3.5. Use limits
The following table gives the use limits of certain
components subject to wear, after which the com-
ponent must be replaced.
WBE
0701
WBE
0702
WBE
0704
Compression with de-com-
pressor shut 0,8 Mpa (1300 r.p.m.
Minimum inlet valve stem
diameter 5,32 mm
Minimum exhaust valve
stem diameter 5,27 mm
Minimum inlet valve head
rim thicknesse 0,5 mm
Minimum exhaust valve
head rim thickness 0,5 mm
Valve seat depth 1,8 mm
Minimum valve spring leng-
th 28,5 mm
Maximum gap between
ends of cylinder rings 1 mm
Max. axial gap for compres-
sion rings 0,15 mm
Minimum gudgeon pin dia-
meter 12,95 mm 17,95 mm
Max. gudgeon pin-piston
seat diameter 13,05 mm 18,05 mm
Max. connec-
ting rod diame-
ter
gudgeon
pin side 13,07 mm 18,07
mm
c r a n k
side 26,07 mm 30,07
mm
3.2. Technical data
WBE
0701
WBE
0702
WBE
0704
Displacement 160 cc 140 cc 196 cc
Bore 65 mm 61 mm 70 mm
Stroke 48 mm 51 mm
Compression ratio when
new 8,0:1 Minimum 4 bar
Minimum speed (SLOW) 1800 (±150) r.p.m.
Maximum speed (FAST) 2900 (±100) r.p.m.
Fuel tank capacity 1,0 litres
Oil sump capacity 0,55 litres
Dry weight 11,80 kg 12,80
kg
3.3. Adjustments
Distance between spark plug
electrodes 0,6 - 0,8 mm
Coil air gap 0,35 - 0,45 mm
Inlet valve clearance 0,10 - 0,15 mm
Exhaust valve clearance 0,15 - 0,20 mm
Year of
manufacture
Date
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INDEX

Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 11 Service manual
3. TECHNICAL DATA AND SPECIFICATIONS
3.6. Tightening torques
8-10 Nm
8-10 Nm
8-10 Nm
8-10 Nm
8-12 Nm
16-18 Nm
50-55 Nm
15 Nm
8-12 Nm 8-10 Nm
8-10 Nm
80-90 Nm 4-6 Nm 8-12 Nm
8-10 Nm
8-10 Nm
22-30 Nm
8-10 Nm
8-10 Nm
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INDEX

pag. 12 Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
3. TECHNICAL DATA AND SPECIFICATIONS
3.7. Table of Tightening torques
Chapter Ref. Description of screw Tightening torques
5Tank xing screws 8 - 10 Nm
5Tank xing nut 8 - 10 Nm
6 Fixing nuts, starter assembly 8 - 10 Nm
6 Starter screw 4 - 6 Nm
7 Starter motor mounting screws 22 - 30 Nm
9Fixing nuts carburettor and lter 8 - 10 Nm
10 Support screw, governor assembly 8 - 10 Nm
11 - 14 Spark plug tightening torque 16 - 18 Nm
11 VFixing screw reel 8 - 10 Nm
11 Coil xing stud 8 - 10 Nm
12 Brake support screws 8 - 10 Nm
12 Brake support stud 8 - 10 Nm
13 Mufer xing nuts 8 - 10 Nm
14 Screws valve cover 8 - 12 Nm
14 Fixing head screws 50 - 55 Nm
14 Attachment bolt ywheel 80 - 90 Nm
14 Screws small plate drop wire 8 - 12 Nm
15 Union screws under carter and sump 8 - 12 Nm
15 Counterweight governor xing screw 8 - 10 Nm
15 Fixing screws lower connecting rod cap 15 Nm
P.S. For the coupling tourque of all standard screws refer to the single table.
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INDEX

Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 13 Service manual
3.8. Identicationofengineunits
For ease of reference, this manual has subdivided maintenance operations into different sections, each of
which refers to an engine component unit as indicated in the diagrams below.
3. TECHNICAL DATA AND SPECIFICATIONS
Carburettor
Ignition
Carburation control
Engine block
Air intake
Air intake
Turning off and Stopping
Exhaust system
Starting system
Starting system
Tank and Supply
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INDEX

pag. 14 Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
4. ENGINE TUNING AND TESTING
4.1. Operating guidelines
The engine requires a series of interventions (shown in the table below) in order to ensure minimum basic
maintenance.
Operation First 5 hours Every 5 hours
or daily
Every 25
hours or
every season
Every 50
hours or
every season
Every 100
hours
Check oil level -■---
Change oil *(1) ■- - ■-
Clean mufer and engine -■---
Check air cleaner *(2) -■---
Replace air cleaner *(2) - - ■- -
Check spark plug -■---
Replace spark plug ---■-
*(1) Replace the oil every 25 hours if the engine is working at full load or at high temperatures.
*(2) Clean the air lter more often if the machine is working in dusty areas.
For the operations that are not difcult for the nal
user the assistance centre must maintain the mo-
tor in perfect efciency, in accordance with two
intervention lines:
- Tuning the engine whenever possible.
- Recommending the client a routine maintenan-
ce program at set intervals (e.g. at the end of the
season or before a long period of inactivity).
4.2. Engine tuning program
As part of general engine tuning or any intervention
on the lawn tractor, it is recommended that the Ser-
vice Centre performs a series of operations aimed
at maintaining the engine’s efciency.
Tuning should involve:
- external blowing and cleaning the cylinder
head, cylinder and mufer by removing any
remains of grass and mud;
- checking the oil level, topping up or replacing
parts if necessary;
- inspecting the condition of the starter rope and
checking that it functions correctly [ 6.2];
- cleaning and oiling the air lter [ 5.1];
- emptying and cleaning the fuel tank and che-
cking the breather pipe [ 5.2];
- adjusting minimum and maximum speeds
[ 9.1 and 9.3];
- inspecting the condition of the spark plug; che-
cking the distance between the electrodes [
11.1];
- tightening the screws [ 12.2];
- functional test [ 4.3].
Should the checks and adjustments fail to achieve
a satisfactory result, refer to chapter [ 16] for
troubleshooting.
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INDEX

Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 15 Service manual
4.3. Functional test
A functional test needs to be carried out at the
end of each servicing operation, to check that the
operations made are effective. The test must be
performed in compliance with the safety regula-
tions regarding the use of the lawnmower on which
the engine is installed.
The functional test is carried out as follows:
a. Refuelling and checking the supply system
When you have refuelled the tank with new petrol,
check the seal of the tank, the cap and the car-
burettor pipe.
b. Cold starting test
With the throttle control in “CHOKE”, start the engine
a few times to check it runs normally.
c. Check the engine rpm
When the engine is hot enough, check the engine
speed with the throttle control set to “SLO” and
“FAST”; the readings should be equal to the speci-
cations [ 3.2].
d. Hot start test
With the engine hot and the throttle control set to
“SLOW”, start the engine a few times to check it
runs normally.
If all of these operations have a positive result, the
engine can be considered fully serviceable and be
returned to the client.
4. ENGINE TUNING AND TESTING
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INDEX

pag. 16 Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
5. TANK AND SUPPLY
IMPORTANT: Carefully read the information below before commencing any intervention.
General Information
The fuel supply system comprises the petrol tank connected to the carburettor by a pipe; a mesh lter at
the bottom of the tank prevents deposits and impurities from reaching the carburettor.
The versions with a lawn mower mounted fuel tank are supplied with a lter mounted at the bottom of the
fuel tank, which prevents impurities and dirt from reaching the carburettor.
The versions with a tractor mounted fuel tank, the fuel tank itself forms an integral part of the machine
and is connected to the carburettor via a fuel line. An in-line lter prevents impurities and dirt from reaching
the carburettor.
The supply to the carburettor oat chamber is caused by gravity and the volume of petrol taken from the
tank as the engine runs is compensated by a breather pipe in the cap.
See the relevant section [ 16] for advice on resolving problems due to the malfunctioning of the petrol
supply system.
WARNING: All interventions on the supply system must be performed in safe conditions, therefore:
- do not smoke;
- workinaventilatedenvironmentawayfromnakedamesorunprotectedsourcesofheat;
- collect any remaining petrol by positioning a suitable container under the engine, avoiding soiling
the work bench;
- remove all traces of spilt petrol immediately;
- check you have connected the pipes before pouring petrol back into the tank.
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Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 17 Service manual
5.1. Emptying and removing the tank
1 - Remove the ring (1) of the petrol pipe (2) from
the tank side and drain all the fuel from the tank
and the pipe into a suitable container.
2 - Unscrew the two screws (3) at the side and the
nut at the rear (4) and remove the tank (5).
3 - When tting, perform the above operations in
reverse.
WARNING:Beforerellingthetankwithnew
fuel, check that the petrol pipe is intact.
5.2. Cleaning the tank
1 - Remove the tank [ 5.1].
2 - Remove the clamp (1) from the side of the tank
and disconnect the petrol pipe (2).
3 - Slide out the lter tube (6) and blow compressed
air through it so as to remove any deposits inside.
4 - Keeping the hole (7) in the spigot closed, pour
about 100 cc of clean petrol into the tank and
shake it vigorously to clean the inside.
5. TANK AND SUPPLY
5
3
43
6
7
1
2
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pag. 18 Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
5. TANK AND SUPPLY
5 - Empty the tank and dispose of the petrol used
for cleaning in accordance with the laws in force.
6 - Ret the tank [ 5.1]tightening the screws (3)
and the nut (4) to the torques indicated.
WARNING:Beforerellingthetankwithnew
fuel, check that the petrol pipe is intact.
5.3. Checking and cleaning the breather pipe
1 - Remove the cap (8) and pull out the gasket (9)
and the sponge (10).
2 - Check that:
- the gasket (9) is intact and without cracks or
ssures;
- the air passages (11) inside the cap are not clog-
ged;
- the sponge (10) is not crushed or broken.
NOTE: Always replace the entire cap if the
gasket or sponge is damaged.
Tightening torques
3Tank xing screws 8-10 Nm
4Tank xing nut 8-10 Nm
8
8
9
10
11
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Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 19 Service manual
General information
The starter assembly inside the cover consists of a rope wound around a pulley. The movement from the
pulley to the ywheel (and the engine shaft) is transmitted by a pair of hooks. The rope is returned and
rewound by a spiral spring.
See the relevant section [ 16] for advice on resolving problems due to the malfunctioning of the star-
ting system.
6. STARTING SYSTEM ( manual starter)
2
6.1. Removing the starter assembly
1 - To get access to the starter assembly (1), the
cover (2) must be removed by unscrewing the
three nuts (3).
2 - Ret the starter assembly (1) by tightening the
cover nuts (3) to the torque indicated.
6.2. Replacing the rope
1 - Remove the starter assembly [ 6.1].
2 - Keep hold of the pulley (4) and slowly unwind
(clockwise) the entire rope (5) to gradually release
the return spring.
If the rope breaks, the spring will be already relea-
sed and you will only have to unwind the rope.
3 - Undo or cut the knot at the end of the rope
(5) and remove the section still attached to the
pulley.
1
3
3
4
54
5
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pag. 20 Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
Service manual
6. STARTING SYSTEM ( manual starter)
4 - Insert one end of the rope (5) (ø 3.5mm - length
2500mm), through the guide in the ventilation grille,
into the hole in the pulley (4), and fasten it by tying
a knot.
5 - Insert the other end of the rope into the grip (6)
and fasten it with a knot.
6 - Rotate the pulley (4), without winding the rope
onto it, through about 6 complete turns anticlockwi-
se in order to load the spring. Carefully release the
pulley to allow the rope to rewind itself completely
onto the pulley.
7 - Check that the pulley rotates freely.
8 - After pulling the entire length of the rope, check
that the pulley (4) is able to complete another 2-3
turns before compressing the spring.
9 - Ret the starter assembly [ 6.1].
6.3. Replacing the hooks
1 - Remove the starter assembly [ 6.1].
2 - Undo the screw (7) clockwise and remove the
cover (8), setting aside the spring and washer.
Take care that the pulley (4) does not slide out of
its housing.
NOTE: The screw (7) has a left-handed thread
and therefore should be unscrewed clockwi-
se.
3 - Move the return springs (9) gently out of the
way, rotate the hooks (10) clockwise and remove
them.
NOTE: Always replace the complete set
consisting of hooks, return springs, cover and
screw, as a unit..
4 - When tting, tighten the screw (7) to the torque
indicated.
5 - Ret the starter assembly [ 6.1].
Tightening torques
3
Fixing nuts, starter assembly 8-10 Nm
7Starter screw 4-6 Nm
Technical information
Starter rope dimensions ø 3,5x2500 mm
5
6
4
7
8
9
10
4
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Release 01 - 04/2009
Engine WBE 0701-WBE 0702-WBE 0704
pag. 21 Service manual
General information
The electric starter system consists of a motor supplied by a 12 Volt battery (mounted on the machine). The
battery is charged by a coil type alternator which receives impulses from the magneto ywheel.
See the relevant section [ 16] for advice on resolving problems due to the malfunctioning of the star-
ting system.
7. STARTING SYSTEM ( electric starter)
2
1
7.1. Removing the starter motor
1 - Remove the cover by unscrewing the three
nuts.
2 - Remove the ywheel magneto [ 14.5]
3 - Disconnect the connector (1) from the wiring.
4 - Disconnect the live cable (2) and the earth
cable (3).
5 - Remove the screws (4) and remove the motor.
6 - To assemble repeat the operation in reverse.
When attaching the connector (1) the three wires
must attached in the proper places.
7 - Install the ywheel magneto [ 14.5]
8 - Assemble the cover.
3
4
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INDEX