Yamaha YZ125N1 Motorcycle User Manual


 
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SPEC
MAINTENANCE SPECIFICATIONS
Item Standard Limit
Transmission:
Main axle deflection limit
0.01 mm (0.0004 in)
Drive axle deflection limit
0.01 mm (0.0004 in)
Shifter:
Shifting type Cam drum and guide bar
Guide bar bending limit
0.05 mm (0.0020 in)
Kick starter type: Kick and mesh type
Kick clip friction force P=0.8~1.2 kg (1.8~2.6 lb)
Air filter oil grade (oiled filter):
Foam-air-filter oil or engine mixing oil
Carburetor: USA, CDN, ZA
EUROPE
AUS, NZ
Type/Manufacturer TMX
χ
38SS
/MIKUNI
I.D. mark 5MV1 00 5MV2 10
Main jet (M.J.) #460 #450
Jet needle-clip position (J.N.) 6BGK9-75-3 6BHY1-75-3
Cutaway (C.A.) 5.75
Pilot jet (P.J.) #25 #30
Pilot air screw (P.A.S.) 1-1/4 1-1/2
Valve seat size (V.S.)
ø3.8 mm (0.15 in)
Starter jet (G.S.) #80
Fuel level (F.L.) 13.5~14.5 mm
(0.53~0.57 in)
Reed valve:
Thickness* 0.42 mm (0.017 in)
Valve stopper height 8.2~8.6 mm (0.323~0.339 in)
Valve bending limit
0.2 mm (0.008 in)
Cooling:
Radiator core size:
Width 110 mm (4.33 in)
Height (left) 240 mm (9.45 in)
(right) 220 mm (8.66 in)
Thickness 32 mm (1.26 in)
Radiator cap opening pressure 95~125 kPa
(0.95~1.25 kg/cm
2
, 13.5~17.8 psi)
Radiator capacity (total) 0.63 L (0.55 Imp qt, 0.67 US qt)
Water pump:
Type Single-suction centrifugal pump
5MV-9-10-2 6/12/00 7:23 PM Page 2-4