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SPEC
MAINTENANCE SPECIFICATIONS
Automatic centrifugal clutch:
Clutch shoe thickness
1.5 mm (0.06 in)
1.0 mm
(0.04 in)
Clutch-in revolution
1,960 ~ 2,240 r/min
----
Clutch-stall revolution
3,300 ~ 3,900 r/min
----
Carburetor:
I.D.mark
5GH9 11
----
Main jet
(M.J)
#130
----
Main air jet
(M.A.J)
#50
----
Jet needle
(J.N)
5EP3-55-3
----
Needle jet
(N.J)
P-0M
----
Pilot air jet
(P.A.J.1)
#80
----
Pilot air jet
(P.A.J.2)
1.3
----
Pilot outlet
(P.O)
0.95
----
Pilot jet
(P.J)
#17.5
----
Bypass1
(B.P.1)
0.8
----
Bypass2
(B.P.2)
0.8
----
Bypass3
(B.P.3)
0.8
----
Valve seat size
(V.S)
2.0
----
Starter jet
(G.S.1)
#70
----
Starter jet
(G.S.2)
0.9
----
Throttle valve size
(Th.V)
#90
----
Float height
(F.H)
13 mm (0.51 in)
----
Fuel level
(F.L)
3 ~ 4 mm (0.12 ~ 0.16 in)
----
Engine idle speed
1,450 ~ 1,550 r/min
----
Intake vacuum
32 kPa (240 mmHg, 9.45 inHg)
----
Oil filter type:
Foam
----
Oil pump:
Oil pump type
Trochoid
----
Tip clearance “A” or “B”
0.15 mm (0.006 in)
0.2 mm
(0.008 in)
Side clearance
0.04 ~ 0.09 mm
(0.0016 ~ 0.0035 in)
----
Bypass valve setting pressure
78 ~ 118 kPa
(0.78 ~ 1.18 kg/cm², 11.3 ~
17.11 psi)
----
Oil pressure (hot)
7 kPa (0.07 kg/cm², 1.02 psi) at
1,500 r/min
----
Pressure check location
Cylinder head
----
Shaft drive:
Middle gear backlash
0.1 ~ 0.3 mm
(0.0039 ~ 0.0118 in)
----
Final gear backlash
0.1 ~ 0.2 mm
(0.0039 ~ 0.0079 in)
----
Differential gear backlash
0.05 ~ 0.25 mm
(0.002 ~ 0.0098 in)
----
Item
Standard
Limit
Содержание YFM 400 FWA P
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