air filter YAMAHA WR 250F 2002 Owner's Guide

5 - 66
CHAS
2. Montieren:
Buchse 1
Hülse 2
Staubschutzring 3
HINWEIS:
Molybdändisulfidfett auf das Lager
auftragen.
Lithiumfett auf die Buchse, Muffe
und die Staubdichtungen auftra-
gen.
Die Staubdichtungen so einbau-
en, daß die Dichtlippen nach au-
ßen weisen.
3. Montieren:
Federbein
4. Montieren:
Schraube (Federbein, Rah-
men) 1
Mutter (Federbein, Rahmen)
2
HINWEIS:
Molybdändisulfidfett auf die Schrau-
be auftragen.
5. Montieren:
Schraube (Umlenkhebel,
Federbein) 1
Schraube (Umlenkhebel,
Federbein) 2
HINWEIS:
Molybdändisulfidfett auf die Schrau-
be auftragen.
T R..56 Nm (5,6 m · kg)
T R..53 Nm (5,3 m · kg)
6. Montieren:
Rahmen-Hinterteil 1
Schraube (Rahmen-Hinter-
teil) 2
Schraube (Bremsflüssig-
keitsbehälter) 3
T R..29 Nm (2,9 m · kg)
T R..10 Nm (1,0 m · kg)
7. Festziehen:
Schraube (Luftfilteran-
schluß) 1
T R..3 Nm (0,3 m · kg)
2. Monter:
Douille 1
Collerette 2
Joint antipoussière 3
N.B.:
Enduire le roulement de graisse au
bisulfure de molybdène.
Enduire les douilles, les collerettes et
les joints antipoussière de graisse à
base de savon au lithium.
Monter les joints antipoussière en diri-
geant leurs lèvres vers l’extérieur.
3. Monter:
Amortisseur arrière
4. Monter:
Boulon (amortisseur arrière-
cadre) 1
Ecrou (amortisseur arrière-
cadre) 2
N.B.:
Appliquer de la graisse de molybdène
sur le boulon.
5. Monter:
Boulon (amortisseur arrière-
bras de relais) 1
Ecrou (amortisseur arrière-bras
de relais) 2
N.B.:
Appliquer de la graisse de molybdène
sur le boulon.
T R..56 Nm (5,6 m · kg, 40 ft · lb)
T R..53 Nm (5,3 m · kg, 38 ft · lb)
6. Monter:
Cadre arrière 1
Boulon (cadre arrière) 2
Boulon (réservoir) 3
T R..29 Nm (2,9 m · kg, 21 ft · lb)
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
7. Serrer:
Vis (raccord de filtre à air) 1
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
2. Installare:
Boccola 1
Collarino 2
Guarnizione parapolvere 3
NOTA:
Applicare grasso al disolfuro di molib-
deno sul cuscinetto.
Applicare grasso a base di sapone di
litio sulle boccole, sui collarini e sui
parapolvere.
Installare i parapolvere con il labbro
rivolto in avanti.
3. Installare:
Ammortizzatore posteriore
4. Installare:
Bullone (ammortizzatore
posteriore - telaio) 1
Dado (ammortizzatore poste-
riore - telaio) 2
NOTA:
Applicare grasso al disolfuro di molib-
deno sul bullone.
5. Installare:
Bullone (ammortizzatore
posteriore - leva di rinvio) 1
Dado (ammortizzatore poste-
riore - leva di rinvio) 2
NOTA:
Applicare grasso al disolfuro di molib-
deno sul bullone.
T R..56 Nm (5,6 m · kg, 40 ft · lb)
T R..53 Nm (5,3 m · kg, 38 ft · lb)
6. Installare:
Telaio posteriore 1
Bullone (telaio posteriore) 2
Bullone (serbatoio) 3
T R..29 Nm (2,9 m · kg, 21 ft · lb)
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
7. Serrare:
Vite (giunto filtro dell’aria) 1
T R..3 Nm (0,3 m · kg, 2,2 ft · lb)
AMORTISSEUR ARRIERE
FEDERBEIN
AMMORTIZZATORE POSTERIORE

7 - 11
TUN
Examples of carburetor setting depending on symptom
This should be taken simply for an example. It is necessary to set the carburetor while checking
the operating conditions of the engine.
Symptom Setting Checking
At full throttle
Hard breathing
Shearing noise
Whitish spark plug
Lean mixtureIncrease main jet calibration no.
(Gradually)Discoloration of spark plug →
If tan color, it is in good condition.
If cannot be corrected:
Clogged float valve seat
Clogged fuel hose
Clogged fuel cock
Check that the accelerator pump oper-
ates smoothly.
At full throttle
Speed pick-up stops
Slow speed pick-up
Slow response
Sooty spark plug
Rich mixtureDecrease main jet calibration no.
(Gradually)Discoloration of spark plug →
If tan color, it is in good condition.
If cannot be corrected:
Clogged air filter
Fuel overflow from carburetor
Lean mixture Lower jet needle clip position.
(1 groove down)
The clip position is the jet needle
groove on which the clip is installed.
The positions are numbered from the
top.
Check that the accelerator pump oper-
ates smoothly. (except for rich mixture
symptom). Rich mixture Raise jet needle clip position.
(1 groove up)
1/4 ~ 3/4 throttle
Hard breathing
Lack of speedLower jet needle clip position.
(1 groove down)
1/4 ~ 1/2 throttle
Slow speed pick-up
Poor accelerationRaise jet needle clip position.
(1 groove up)
Closed to 1/4 throttle
Hard breathing
Speed downUse jet needle with a smaller diameter. Slow-speed-circuit passage
Clogged → Clean.
Overflow from carburetor
Closed to 1/4 throttle
Poor accelerationUse jet needle with a larger diameter.
Raise jet needle clip position. (1 groove
up)
Poor response in the low to
intermediate speedsRaise jet needle clip position.
If this has no effect, lower the jet needle
clip position.
Poor response when throttle
is opened quicklyCheck overall settings.
Use main jet with a lower calibration no.
Raise jet needle clip position.
(1 groove up)
If these have no effect, use a main jet
with a higher calibration no. and lower
the jet needle clip position.Check air filter for fouling.
Check that the accelerator pump oper-
ates smoothly.
Jet needleClip
Groobe 7 Groobe 6
Groobe 5
Groobe 4
Groobe 3
Groobe 2
Groobe 1
Leaner
↑
(Standard)
↓
Richer
*
SETTING