Maintenance Specifications - Yamaha YZ250 Handbuch

Item
Clutch housing thrust clearance
Clutch housing radial clearance
Clutch release method
Transmission:
Main axle deflection limit
Drive axle deflection limit
Shifter:
Shifting type
Guide bar bending limit
Kick starter type:
Air filter oil grade (oiled filter):
Carburetor:
Type/Manufacturer
I.D. mark
Main jet
Main air jet
Jet needle-clip position
Main nozzle
Cutaway
Pilot jet
Pilot air screw
(for reference only)
Valve seat size
Starter jet
Power jet
Float arm height
Reed valve:
Thickness*
Valve stopper height
Valve bending limit
Cooling:
Radiator core size:
Width
Height
Thickness
Radiator cap opening pressure
Radiator capacity (total)
Water pump:
Type

MAINTENANCE SPECIFICATIONS

0.17~0.23 mm (0.007~0.009 in)
0.030~0.055 mm (0.001~0.002 in)
Inner push, cam push
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...
Cam drum and guide bar
...
Kick and ratchet type
Foam-air-filter oil or equivalent oil
USA, CDN
PWK38S/
KEIHIN
1P89 60
(M.J.) #178
(M.A.J) #200
(J.N.) N3EW-2
(N.J.) ø2.9
(C.A.) #7
(P.J.) #50
(P.A.S.) 1
(V.S.) ø3.8 mm
(0.15 in)
(G.S.) #85
(P.W.J.) #50
(F.H.) 5.5~7.5 mm
(0.22~030 in)
0.42 mm (0.017 in)
10.3~10.7 mm (0.406~0.421 in)
...
107.8 mm (4.24 in)
240 mm (9.45 in)
32 mm (1.26 in)
95~125 kPa
(0.95~1.25 kg/cm
0.63 L (0.55 Imp qt, 0.67 US qt)
Single-suction centrifugal pump
2-4
Standard
EUROPE AUS, NZ, ZA
← ←
1P86 40 1P87 50
#180 #178
← ←
N3EW-3 N3EW-2
← ←
← ←
#52 #50
2-1/4 1-1/4
← ←
← ←
← ←
← ←
2 , 13.5~17.8 psi)
SPEC
Limit
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0.01 mm (0.0004 in)
0.01 mm (0.0004 in)
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0.05 mm (0.0020 in)
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0.2 mm (0.008 in)
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