Yamaha YFM450FAT, Supplementary Service Manual

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SPEC
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINE
Tightening torques
Item Standard Limit
Carburetor:
I. D. mark 5NDC 00 ----
Main jet (M.J) #131.3 ----
Main air jet (M.A.J) #50 ----
Jet needle (J.N) 5EP13-55-3 ----
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 ----
Bypass 1 (B.P.1) 0.8 ----
Bypass 2 (B.P.2) 0.8 ----
Bypass 3 (B.P.3) 0.8 ----
Pilot screw (P.S.) 2-1/2 turns out ----
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) 4.0 ~ 5.0 mm (0.16 ~ 0.20 in) ----
Engine idle speed 1,450 ~ 1,550 r/min ----
Intake vacuum 33.3 kPa (250 mmHg, 9.84 inHg) ----
Part to be tightened
Part
name
Thread
size
Q’ty
Tightening torque
Remarks
Nm m · kg ft · lb
Shift cam stopper — M14 1 18 1.8 13
Stopper lever shaft Bolt M6 1 10 1.0 7.2