2005 YAMAHA WR 250F Starter

1 - 42
GEN
INFO
WARMEN MOTOR ANLASSEN
Weder den Chokehebel noch den
Gasdrehgriff betätigen. Den
Warmstarthebel
1 betätigen und
den Motor entweder mit dem Elek-
trostarter oder einem festen Tritt auf
dem Kickstarter anlassen.
Nach dem Anlassen des Motors den
Warmstarthebel loslassen, um die
Luftzufuhr zu stoppen.
Starten nach einem Sturz
Den Warmstarthebel betätigen und
den Motor anlassen. Nach dem
Anlassen des Motors den Warmstart-
hebel loslassen, um die Luftzufuhr zu
stoppen.
Wenn der Motor nicht anspringt
Den Warmstarthebel bis zum
Anschlag betätigen und den Kick-
starterhebel 10–20 Mal durchtreten,
um den überschüssigen Kraftstoff
aus dem Motor abzulassen.
Den Motor erneut anlassen.
Siehe unter “Starten nach einem
Sturz”.
* Beim Kickstarten den Gasdrehgriff
zuvor betätigen.
ACHTUNG:
Während der Einfahrzeit müssen
folgende Vorschriften strikt
beachtet werden, um die Motorlei-
stung zu optimieren und Schäden
zu vermeiden.
Gas-
dreh-
griffbetä-
tigung*Choke-
hebelWarmstart-
hebel
Kalten Motor anlassen
Lufttemperatur liegt
unter 5 °C (41°F)3–4 Mal
öffnenON OFF
Lufttemperatur liegt
über 5 °C (41°F)keine ON OFF
Lufttemperatur ist
normal, zwischen
5°C (41°F) und
25°C (77°F)keineON/
OFFOFF
Lufttemperatur liegt
über 25 °C (77 °F)keine OFF OFF
Starten nach langer
Einsatzpausekeine ON OFF
Warmen Motor
startenkeine OFF ON
Starten nach einem
Sturzkeine OFF ON
AVVIAMENTO DEL MOTORE A
CALDO
Non utilizzare la manopola starter per
partenze a freddo e l’acceleratore. Tirare
la leva starter per partenze a caldo 1 e
avviare il motore premendo l’interruttore
di avviamento o azionando con forza la
leva di avviamento a pedale con un
colpo netto.
Non appena il motore si avvia, rilasciare
la leva starter per partenze a caldo per
chiudere il passaggio dell’aria.
Avviamento del motore dopo una
caduta.
Tirare la leva starter per partenze a caldo
e avviare il motore. Non appena il
motore si avvia, rilasciare la leva starter
per partenze a caldo per chiudere il pas-
saggio dell’aria.
Il motore non si avvia.
Tirare completamente la leva starter per
partenze a caldo e, tenendola premuta,
azionare 10 o 20 volte la leva di avvia-
mento a pedale per liberare il motore.
Quindi, riavviare il motore.
Fare riferimento a “Avviamento del
motore dopo una caduta”.
* Azionare la manopola dell’acceleratore
prima dell’avviamento a pedale.
ATTENZIONE:
Osservare le seguenti procedure di
rodaggio quando si utilizza il mezzo
per le prime volte per assicurare
ottime prestazioni ed evitare danni al
motore.
Aziona-
mento
mano-
pola
accelera-
tore*Mano-
pola
starter
per par-
tenze a
freddoLeva
starter
per par-
tenze a
caldo
Avviamento del motore a freddo
Temperatura dell’aria
= meno di 5 °C
(41°F)Azio-
nare 3 o
4 volte ON OFF
Temperatura dell’aria
= più di 5 °C (41°F)Nessuno ON OFF
Temperatura dell’aria
(temperatura nor-
male) = compresa tra
5°C (41°F) e 25°C
(77°F)Nessuno ON/OFF OFF
Temperatura dell’aria
= più di 25 °C (77 °F)Nessuno OFF OFF
Avviamento del motore
dopo un lungo periodo di
tempoNessuno ON OFF
Avviamento del motore
ancora caldo Nessuno OFF ON
Avviamento del motore
dopo una caduta. Nessuno OFF ON
ARRANQUE DEL MOTOR EN
CALIENTE
No utilice el mando de arranque en
frío ni el acelerador. Tire del mando
de arranque en frío
1 y arranque el
motor pulsando el interruptor de
arranque o accionando el pedal con
firmeza.
En cuanto el motor arranque, suelte
el mando de arranque en frío para
cerrar el paso de aire.
Arranque del motor después de
una caída
Tire del mando de arranque en
caliente y arranque el motor. En
cuanto el motor arranque, suelte el
mando de arranque en frío para
cerrar el paso de aire.
El motor no arranca
Tire del mando de arranque en
caliente completamente afuera y,
mientras lo mantiene en esa posi-
ción, accione el pedal de arranque
entre 10 y 20 veces para desahogar
el motor.
A continuación vuelva a arrancar el
motor.
Consulte el apartado “Arranque del
motor después de una caída”.
* Accionar el acelerador antes de
arrancar con el pedal.
ATENCION:
Observe las instrucciones de
rodaje siguientes durante el fun-
cionamiento inicial a fin de asegu-
rar unas prestaciones óptimas y
evitar daños del motor.
Acciona-
miento
del ace-
lerador*Mando
de
arran-
que en
fríoMando
de
arran-
que en
caliente
Arranque del motor en frío
Temperatura del
aire = inferior a 5 °C
(41°F)Abrir 3
o 4
vecesON OFF
Temperatura del
aire = superior a
5 °C (41°F)Nin-
gunoON OFF
Temperatura del
aire (temperatura
normal) = entre
5°C (41°F) y
25°C (77°F)Nin-
gunoON/
OFFOFF
Temperatura del
aire = superior a
25°C (77 °F)Nin-
gunoOFF OFF
Arranque del motor
después de un periodo
prolongado de
inactividadNin-
gunoON OFF
Arranque del motor en
calienteNin-
gunoOFF ON
Arranque del motor
después de una caídaNin-
gunoOFF ON
STARTEN UND EINFAHREN
AVVIAMENTO E -RODAGGIO
PUESTA EN MARCHA Y RODAJE

1 - 54
GEN
INFO
LAGERUNG
Soll das Motorrad länger als 60 Tage
gelagert werden, sind gewisse
Schutzmaßnahmen notwendig. Das
Motorrad nach der Wäsche, wie
nachfolgend beschrieben, auf die
Lagerung vorbereiten:
1. Das Benzin aus dem Kraftstoff-
tank ablassen und den Verga-
ser entleeren.
2. Die Zündkerze herausdrehen,
einen Eßlöffel SAE 10W-30-
Motoröl in die Zündkerzenboh-
rung gießen und die Zündkerze
wieder eindrehen. Bei betätig-
tem Motorstoppschalter mehr-
mals den Kickstarterhebel
durchtreten, um die Zylinder-
wandungen mit Öl zu bedecken.
3. Die Antriebskette abnehmen,
gründlich reinigen und anschlie-
ßend schmieren. Die Kette mon-
tieren oder in einem am Rahmen
angebundenen Plastikbeutel
aufbewahren.
4. Sämtliche Seilzüge ölen.
5. Das Motorrad so abstützen, daß
die Räder sich frei drehen las-
sen.
6. Einen Plastikbeutel über die
Schalldämpferöffnung binden,
damit keine Feuchtigkeit ein-
dringt.
7. Ist der Lagerort feucht oder salz-
haltig, sämtliche Metallflächen
mit Sprühöl behandeln. Öl von
Gummiteilen und der Sitzbank
fernhalten.
HINWEIS:
Anfallende Reparaturen oder Inspek-
tion vor der Stillegung ausführen.CUSTODIA DEL MEZZO
Se il mezzo rimane inutilizzato per ses-
santa o più giorni, occorre adottare
alcune misure precauzionali per evitarne
il deterioramento. Dopo averlo accurata-
mente pulito, eseguire le seguenti opera-
zioni prima di riporlo:
1. Scaricare il serbatoio, i condotti del
carburante e la vaschetta galleg-
giante del carburatore.
2. Rimuovere la candela d’accensione,
versare un cucchiaio di olio per
motori SAE 10W-30 nel foro della
candela e reinstallarla. Dopo aver
premuto l’interruttore di arresto
motore, rovesciare il motore diverse
volte per distribuire l’olio sulle
pareti del cilindro.
3. Rimuovere la catena di trasmis-
sione, pulirla accuratamente con un
solvente e lubrificarla. Installare
nuovamente la catena o riporla in
una borsa di plastica legata al telaio.
4. Lubrificare tutti i cavi dei comandi.
5. Bloccare il telaio per sollevare le
ruote da terra.
6. Fissare una borsa di plastica
all’estremità del tubo di scarico per
evitare l’infiltrazione di umidità.
7. Se si ripone il mezzo in un ambiente
umido o ricco di sale, coprire tutte
le superfici metalliche esposte con
un sottile strato di olio leggero. Non
applicare olio alle parti in gomma o
al rivestimento della sella.
NOTA:
Eseguire tutte le riparazioni necessarie
prima di riporre il mezzo. ALMACENAMIENTO
Si va a dejar la máquina guardada
durante 60 días o más, debe adoptar
algunas medidas preventivas a fin de
evitar su deterioro. Después de lim-
piar a fondo la máquina, prepárela
para su almacenamiento del modo
siguiente:
1. Vacíe el depósito de combusti-
ble, los tubos de combustible y
la cubeta del flotador del carbu-
rador.
2. Extraiga la bujía, vierta una
cucharada sopera de aceite de
motor SAE 10W-30 en el cilindro
por el orificio de la bujía y vuelva
a colocar esta. Con el interruptor
de paro del motor pulsado,
accione el pedal de arranque
varias veces para que aceite se
reparta por las paredes del cilin-
dro.
3. Desmonte la cadena de transmi-
sión, límpiela a fondo con disol-
vente y lubríquela. Vuelva a
montar la cadena o guárdela en
una bolsa de plástico sujeta al
bastidor.
4. Lubrique todos los cables de
control.
5. Eleve el bastidor y sujételo para
que las ruedas queden levanta-
das del suelo.
6. Cubra la salida del tubo de
escape con una bolsa de plás-
tico para impedir que entre
humedad.
7. Si la máquina debe permanecer
almacenada en un ambiente
húmedo o salado, aplique una
capa fina de aceite ligero a todas
las superficies de metal expues-
tas. No aplique aceite a las pie-
zas de goma o a la funda del
sillín.
NOTA:
Efectúe todas las reparaciones nece-
sarias antes de guardar la máquina.
PFLEGE UND LAGERUNG
PULIZIA E CUSTODIA
LIMPIEZA Y ALMACENAMIENTO

GENERAL SPECIFICATIONS
2 - 1
SPEC
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: WR250FT (USA, CDN, AUS, NZ)
WR250F (EUROPE, ZA)
Model code number: 5UM8 (USA)
5UM9 (EUROPE)
5UMA (CDN, AUS, NZ, ZA)
Dimensions: USA, ZA, CDN EUROPE, AUS, NZ
Overall length 2,190 mm (86.22 in) 2,180 mm (85.83 in)
Overall width 830 mm (32.68 in)←
Overall height 1,290 mm (50.79 in) 1,295 mm (50.98 in)
Seat height 985 mm (38.78 in) 990 mm (38.98 in)
Wheelbase 1,470 mm (57.87 in)←
Minimum ground clearance 370 mm (14.57 in) 375 mm (14.76 in)
Dry weight:
Without oil and fuel 105.5 kg (232.6 lb)
Engine:
Engine type Liquid cooled 4-stroke, DOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 249 cm
3 (8.76 Imp oz, 8.42 US oz)
Bore × stroke 77.0 × 53.6 mm (3.03 × 2.11 in)
Compression ratio 12.5 : 1
Kick and electric starter
Starting system
Lubrication system: Dry sump
Oil type or grade:
Engine oil (For USA and CDN)
At 5 °C (40 °F) or higher È
Yamalube 4 (20W-40) or SAE 20W-40 type
SG motor oil
(Non-Friction modified)
At 15 °C (60 °F) or lower É
Yamalube 4 (10W-30) or SAE 10W-30 type
SG motor oil
(Non-Friction modified)
and/or
Yamalube 4-R (15W-50)
(Non-Friction modified)
(Except for USA and CDN)
API “SG” or higher grade
-20
-4-10
140
3010
5020
6830
8640 50
104
122˚CTemp.
˚F
10W-30
10W-40
20W-40
20W-50
15W-40
2

MAINTENANCE SPECIFICATIONS
2 - 8
SPEC
Clutch:
Friction plate thickness 2.9 ~ 3.1 mm (0.114 ~ 0.122 in) 2.7 mm
(0.106 in)
Quantity 9 ----
Clutch plate thickness 1.1 ~ 1.3 mm (0.043 ~ 0.051 in) ----
Quantity 8 ----
Warp limit ---- 0.1 mm
(0.004 in)
Clutch spring free length 37.0 mm (1.46 in) 36.0 mm
(1.42 in)
Quantity 5 ----
Clutch housing thrust clearance 0.10 ~ 0.35 mm
(0.0039 ~ 0.0138 in)----
Clutch housing radial clearance 0.010 ~ 0.044 mm
(0.0004 ~ 0.0017 in)----
Clutch release method Inner push, cam push ----
Shifter:
Shifter type Cam drum and guide bar ----
Guide bar bending limit ---- 0.05 mm
(0.002 in)
Kickstarter:
Type Kick and ratchet type ----
Carburetor:
Type/manufacturer FCR-MX37/KEIHIN
I. D. mark 5UM8 80
Main jet (M.J) #168
Main air jet (M.A.J)ø2.0
Jet needle (J.N) OBERP-5
Cutaway (C.A) 1.5
Pilot jet (P.J) #40
Pilot air jet (P.A.J) #70
Pilot outlet (P.O)ø0.9
Pilot screw (example) (P.S) 1-3/4
Bypass (B.P)ø1.0
Valve seat size (V.S)ø3.8
Starter jet (G.S) #72
Leak jet (Acc.P) #95
Float height (F.H) 8 mm (0.31 in)
Engine idle speed 1,900 ~ 2,100 r/min
Intake vacuum 29.3 ~ 34.7 kPa
(220 ~ 260 mmHg,
8.66 ~ 10.24 inHg)
Hot starter lever free play 3 ~ 6 mm
(0.12 ~ 0.24 in) Item Standard Limit

MAINTENANCE SPECIFICATIONS
2 - 10
SPEC
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Spark plug M10S × 1.0 1 13 1.3 9.4
Camshaft cap M6 × 1.0 10 10 1.0 7.2
Cylinder head blind plug screw M12 × 1.0 1 28 2.8 20
Cylinder head (stud bolt) M6 × 1.0 2 7 0.7 5.1
(stud bolt) M8 × 1.25 1 15 1.5 11
(bolt) M9 × 1.25 4 38 3.8 27
(nut) M6 × 1.0 2 10 1.0 7.2
Cylinder head cover M6 × 1.0 2 10 1.0 7.2
Cylinder M6 × 1.0 1 10 1.0 7.2
Balancer weight M6 × 1.0 2 10 1.0 7.2
Balancer shaft driven gear M14 × 1.0 1 50 5.0 36
Timing chain guide (intake side) M6 × 1.0 2 10 1.0 7.2
Timing chain tensioner M6 × 1.0 2 10 1.0 7.2
Timing chain tensioner cap bolt M6 × 1.0 1 7 0.7 5.1
Impeller M8 × 1.25 1 14 1.4 10
Radiator hose clamp M6 × 1.0 8 2 0.2 1.4
Coolant drain bolt M6 × 1.0 1 10 1.0 7.2
Water pump housing M6 × 1.0 4 10 1.0 7.2
Radiator M6 × 1.0 6 10 1.0 7.2
Radiator guard M6 × 1.0 2 10 1.0 7.2
Radiator pipe M6 × 1.0 1 10 1.0 7.2
Oil pump cover M4 × 0.7 1 2 0.2 1.4
Oil pump M6 × 1.0 3 10 1.0 7.2
Oil filter element drain bolt M6 × 1.0 1 10 1.0 7.2
Oil filter element cover M6 × 1.0 2 10 1.0 7.2
Oil strainer M6 × 1.0 2 10 1.0 7.2
Oil delivery pipe 1 (M10) M10 × 1.25 1 20 2.0 14
(M8) M8 × 1.25 2 18 1.8 13
Oil hose M6 × 1.0 2 8 0.8 5.8
Oil hose clamp—220.21.4
Oil strainer and frame M14 × 1.5 1 70 7.0 50
Carburetor joint clamp M4 × 0.7 2 3 0.3 2.2
Air filter joint clamp M6 × 1.0 1 3 0.3 2.2
Throttle cable (pull) M6 × 1.0 1 4 0.4 2.9
Throttle cable (return) M12 × 1.0 1 11 1.1 8.0
Throttle cable cover M5 × 0.8 2 4 0.4 2.9
Hot starter plunger M12 × 1.0 1 2 0.2 1.4
Air filter case M6 × 1.0 2 8 0.8 5.8
Air filter joint and air filter case M5 × 0.8 1 4 0.4 2.9
Exhaust pipe (nut) M8 × 1.25 1 13 1.3 9.4
(bolt) M8 × 1.25 1 24 2.4 17
Exhaust pipe protector M6 × 1.0 3 10 1.0 7.2

MAINTENANCE SPECIFICATIONS
2 - 11
SPEC
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race. Silencer M8 × 1.25 2 35 3.5 25
Silencer clamp M8 × 1.25 1 16 1.6 11
Spark arrester M5 × 0.8 4 7 0.7 5.1
Silencer cap M5 × 0.8 6 5 0.5 3.6
Crankcase M6 × 1.0 11 12 1.2 8.7
Crankcase bearing stopper M6 × 1.0 11 10 1.0 7.2
Crankcase bearing stopper (crankshaft) M6 × 1.0 4 10 1.0 7.2
Left crankcase cover M6 × 1.0 8 10 1.0 7.2
Idle gear cover (starter motor) M6 × 1.0 3 10 1.0 7.2
Idle gear plate M6 × 1.0 2 10 1.0 7.2
Right crankcase cover M6 × 1.0 8 10 1.0 7.2
Clutch cover M6 × 1.0 7 10 1.0 7.2
Crankcase oil drain bolt M10 × 1.25 1 20 2.0 14
Drive chain sprocket cover M6 × 1.0 2 8 0.8 5.8
Kick shaft ratchet wheel guide M6 × 1.0 2 12 1.2 8.7
Kickstarter crank M8 × 1.25 1 33 3.3 24
Primary drive gear M18 × 1.0 1 75 7.5 54
Clutch spring M6 × 1.0 5 8 0.8 5.8
Clutch boss M16 × 1.0 1 60 6.0 43
Clutch cable locknut M8 × 1.25 2 7 0.7 5.1
Push lever shaft M6 × 1.0 1 10 1.0 7.2
Drive sprocket M18 × 1.0 1 75 7.5 54
Drive axle oil seal stopper M6 × 1.0 2 10 1.0 7.2
Segment M8 × 1.25 1 30 3.0 22
Shift guide M6 × 1.0 2 10 1.0 7.2
Stopper lever M6 × 1.0 1 10 1.0 7.2
Shift pedal M6 × 1.0 1 12 1.2 8.7 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb

MAINTENANCE SPECIFICATIONS
2 - 14
SPEC
NOTE:
1. First, tighten the steering nut approximately 38 Nm (3.8 m  kg, 27 ft  lb) by using the steering nut
wrench, then loosen the steering nut one turn.
2. Retighten the steering nut 7 Nm (0.7 m  kg, 5.1 ft  lb). Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Upper bracket and outer tube M8 × 1.25 4 23 2.3 17
Lower bracket and outer tube M8 × 1.25 4 20 2.0 14
Upper bracket and steering stem M24 × 1.0 1 145 14.5 105
Handlebar upper holder and upper bracket M8 × 1.25 4 28 2.8 20
Steering stem and steering ring nut M28 × 1.0 1 Refer to NOTE.
Front fork and front fork cap bolt M51 × 1.5 2 30 3.0 22
Front fork and base valve M27 × 1.0 2 55 5.5 40
Front fork cap bolt and damper rod M12 × 1.25 2 29 2.9 21
Front fork bleed screw and front fork cap bolt M5 × 0.8 2 1 0.1 0.7
Front fork and front fork protector M6 × 1.0 6 10 1.0 7.2
Front fork protector and brake hose holder M6 × 1.0 2 7 0.7 5.1
Throttle grip cap M5 × 0.8 2 4 0.4 2.9
Front brake master cylinder M6 × 1.0 2 9 0.9 6.5
Brake lever mounting bolt M6 × 1.0 1 6 0.6 4.3
Brake lever mounting nut M6 × 1.0 1 6 0.6 4.3
Brake lever position locknut M6 × 1.0 1 5 0.5 3.6
Front brake hose guide and front brake hose
guide bracketM5 × 0.8 1 4 0.4 2.9
Front brake hose guide and lower bracket M6 × 1.0 1 4 0.4 2.9
Clutch lever holder M5 × 0.8 2 4 0.4 2.9
Clutch lever mounting nut M6 × 1.0 1 4 0.4 2.9
Hot starter lever holder M5 × 0.8 2 4 0.4 2.9
Hot starter lever mounting nut M5 × 0.8 1 2 0.2 1.4
Front brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Front brake hose union bolt M10 × 1.25 2 30 3.0 22
Front brake caliper M8 × 1.25 2 23 2.3 17
Front brake caliper and brake hose holder M6 × 1.0 1 10 1.0 7.2
Pad pin plug M10 × 1.0 2 3 0.3 2.2
Front brake caliper and pad pin M10 × 1.0 1 18 1.8 13
Rear brake caliper and pad pin M10 × 1.0 1 18 1.8 13
Brake caliper and bleed screw M8 × 1.25 2 6 0.6 4.3
Front wheel axle and axle nut M16 × 1.5 1 105 10.5 75
Front wheel axle holder M8 × 1.25 4 23 2.3 17
Front brake disc M6 × 1.0 6 12 1.2 8.7
Rear brake disc M6 × 1.0 6 14 1.4 10
Brake pedal M8 × 1.25 1 26 2.6 19
Rear brake master cylinder M6 × 1.0 2 11 1.1 8.0
Rear brake master cylinder cap M4 × 0.7 2 2 0.2 1.4
Rear brake hose union bolt M10 × 1.25 2 30 3.0 22
Rear wheel axle and axle nut M20 × 1.5 1 125 12.5 90

MAINTENANCE SPECIFICATIONS
2 - 17
SPEC
EC212300
ELECTRICAL
Item Standard Limit
Ignition system:
Advancer type Electrical ----
CDI:
Pickup coil resistance (color) 248 ~ 372 Ω at 20°C (68 °F)
(White – Red)----
CDI unit-model/manufacturer 5UM-80/YAMAHA (For USA) ----
5UM-90/YAMAHA (Except for USA) ----
Ignition coil:
Model/manufacturer 5UL-10/DENSO ----
Minimum spark gap 6 mm (0.24 in) ----
Primary coil resistance 0.08 ~ 0.10 Ω at 20 °C (68 °F) ----
Secondary coil resistance 4.6 ~ 6.8 kΩ at 20 °C (68 °F) ----
Charging system:
System type AC magneto ----
Model (stator)/manufacturer 5UM 10/YAMAHA ----
Normal output 14 V/120 W at 5,000 r/min ----
Charging coil resistance (color) 0.288 ~ 0.432 Ω at 20 °C (68 °F)
(White – Ground)----
Lighting coil resistance (color) 0.224 ~ 0.336 Ω at 20 °C (68 °F)
(Yellow – Ground)----
Rectifier/regulator:
Regulator type Semiconductor short circuit ----
Model/manufacture SH712AA/SHINDENGEN ----
Regulated voltage (AC) 13.0 ~ 14.0 V ----
Regulated voltage (DC) 14.1 ~ 14.9 V ----
Rectifier capacity (AC) 12 A ----
Rectifier capacity (DC) 8 A ----
Electric starting system:
Type Constant mesh ----
Starter motor:
Model/manufacturer 5UM01/YAMAHA ----
Operation voltage 12 V ----
Output 0.35 kW ----
Armature coil resistance 0.0189 ~ 0.0231 Ω at 20 °C (68 °F) ----
Brush overall length 7 mm (0.28 in) 3.5 mm (0.14 in)
Brush quantity 2 pcs. ----
Spring force 3.92 ~ 5.88 N
(400 ~ 600 g, 14.1 ~ 21.2 oz)----
Commutator diameter 17.6 mm (0.69 in) 16.6 mm (0.65 in)
Mica undercut (depth) 1.5 mm (0.06 in) ----