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Yamaha EF1000 Service Manual

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    							MAINTENANCE SPECIFICATIONS 
    Engine 
    PISTON 
    Piston Clearance 
    Piston Size D 
     
    Mesuring  Point 
    H 
    PISTON PIN 
    Piston Pin Dia 
     
    PISTON  RING 
    Top Ring 
    Dimensions 
    End  Gap 
     
    Side  Clearance 
     
    2nd  Ring 
    Dimensions 
    End  Gap 
     
    Side  Clearance 
     
    Oil Ring 
    Dimensions 
    End  Gap 
     
    CYLINDER HEAD 
    Warp Limit 
    CYLINDER 
    Bore Size 
    CRANKSHAFT 
    Unit 
    mm(in) 
    ~H D 
    mm (in) 
    mm (in) 
    ~B 
    mm(in) 
    mm (in) 
    [ 1 mm (in) 
    Bill 
    ~r 
    A 
    Big  End Side  Clearance A 
    Runout   B 
    Crank Pin Dia C 
     
    5-2 
    SPECIFICATIONS I SPEC I u • 
    EF1000 
    0.020-0.035 (0.0008-0.0014) 
    50.0 
    (  1.969) 
    49.93  (1.966) 
    10 (0.4) 
    12.0  (0.47) 
    11.9 (0.468) 
    1.5 X 2.0 (0.059 X 0.079) 
    0.1-0.25 (0.004-0.01) 
    0.9  (0.035) 
    0.06  (0.0024) 
    0.15  (0.006) 
    1.5 X 2.0 (0.059 X 0.079) 
    0.1-0.25 (0.004-0.01) 
    0.9  (0.035) 
    0.04  (0.0016) 
    0.15  (0.006) 
    2.5 X 2.1 (0.098 X 0.083) 
    0.1-0.25 (0.004-0.01) 
    0.9  (0.0354) 
    0.5  (0.02) 
    50.0 
    (1.969) 
    0.2-0.6 (0.008-0.024) 
    0.02  (0.0008) 
    22.0  (0.87) 
    21.9 (0.86)  
    						
    							CONNECTING ROD 
    Small End Dia A 
    Big End  Dia B 
    Oil Clearance 
     
    CAMSHAFT 
    Camshaft 
    Outside Dia 
    Cam 
    Dimension 
    II A 
    JIB 
    Camshaft Journal 
     
    VALVE 
    Valve Dimension 
    Head  Dia A 
    Stem  Dia B 
    Length C 
    Seat Width D 
     11811 
    Valve  Clearance  (Cold) 
    PUSH ROD 
    Runout Limit 
    Unit 
    mm (in) 
    mm (in) 
    gJA 
    8 
    mm (in) 
    L J 
    c 
    IN 
    EX 
    IN 
    EX 
    IN 
    EX 
    IN 
    EX 
    IN 
    EX 
    mm (in) 
    SPECIFICATIONS I SPEC I rr-1 
    EF1000 
    12.0 
    22.0 
    0.016-0.034  (0.0006-0.0013) 
    0.1 (0.004) 
    IN 
    EX 
    20.5  (0.81)  20.5 (0.81) 
    16.0  (0.63) 
    16.0 (0.63) 
    12.0  (0.472) 
    11.9 (0.468) 
    ~D 
    19.0  (0.75) 
    17.0  (0.67) 
    5.0  (0.2) 
    5.0  (0.2) 
    53.4 (2.10) 
    53.6  (2.11) 
    0.7 (0.03) 
    0.7  (0.03) 
    1.2 (0.047) goo 
    0.1 (0.004) 
    0.1 (0.004) 
    0.5  (0.02) 
    5-3  
    						
    							Unit 
    VALVE SPRING mm (in) 
    Free  Length 
     
    Tilt Limit 
    1t 
    CARBURETOR mm(in) 
    Type/Manufacturer 
    Bore  Size 
    Float Height 
    r-M 
    Generator,  Electrical 
    GENERATOR 
    Type 
    Phase 
    Number of Poles 
    Excitation 
    Initial Excitation 
    Driving Method 
    Rated Power Factor 
    Frequency 
    Fluctuation 
    ELECTRIC 
    Ignition System 
    Pulser  coil resistance  (±10%) 
    Charge 
    coil resistance  (±10%) 
    Ignition timing 
    Primary coil resistance (±10%) 
    Secondary coil resistance  (±20%) 
    AC  excess 
    current check 
    DC excess current check 
    Coil resistance (0±10%) 
    Main coil at  20°C 
    Sub coil at  20°C 
    DC coil at 20°C 
    Rotor coil at 20°C 
    Number of rectifier 
    Rotor rectifier resistance 
    Normal direction 
    Reverse direction 
    Unit 
    5-4 
    SPECIFICATIONS I SPEC I u • I 
    EF1000 
    27.4 (1.08) 
    24.4  (0.96) 
    0.8 (0.031) 
    BV15/MIKUNI 
    15  (0.6) 
    17 (0.67) 
    EF1000 
    Bruse-less, 
    Condenser-exciting, AC generator 
    Single 
    2 
    Self magnetization 
    Residual magnetization 
    Direct connection 
    1.0 
    Less than 5% 
    C.D.I. 
    380 
    3500 
    BTDC 23°/3,000-3,600 r/min 
    0.230 
    5.61 ko 
    Protector 
    Ptorector 
    1.764  2.99 
    0.433  4.11  1 
    Continuity 
    No continuity (infinite)  
    						
    							TIGHTENING TORQUE I SPEC I rr-1 
    TIGHTENING TORQUE 
    ~I 
    EF1000 
    Thread  size 
    Torque 
    I Nm (m•kg, ft•lb) 
    Cylinder head  M  6 X 1.0 11 (1.1, 8.0) 
    Cylinder head cover M  6 x 
    1.0  10 (1.0, 7.2) 
    Crankcase 
    cover M  6 X 1.0  10 (1.0, 7.2) 
    Spark plug M14 X 1.25 20 (2.0, 14.5) 
    Fan  case  M 
    6 
    X 1.0  7 (0.7, 5.1) 
    Connecting 
    rod M 6 X 1.0  9 (0.9, 6.5) 
    Flywheel magneto M12 x 1.25  40 (4.0, 29) 
    Governor arm M  6 X 1.0 
    6 (0.6, 4.3) 
    Fuel cock  M  6 X 1.0 
    4 (0.4, 2.9) 
    Rotor 
    assy M  8 X 1.25 21 (2.1, 15.2) 
    Stator assy M  6 X 1.0  10 (1.0, 7.2) 
    Rocker 
    arm lock nut M  6 X 0.5  10 (1.0, 7.2) 
    Muffler nut M 6 X 1.0 7(0.7,5.1) 
    5-5  
    						
    							GENERAL TORQUE SPECIFICATIONS/ I SPEC I u • I 
    DEFINITION  OF UNITS _  .  _ 
    GENERAL 
    TORQUE 
    SPECIFICATIONS 
    This  chart  specifies torque for standard  fasteners 
    with standard I.S.O. pitch threads.  Torque specifi­
    cations 
    for special components or assemblies  are 
    included in the applicable sections of this book. 
    To avoid  warpage, tighten multifastener  assem­
    blies in a crisscross  fashion, in progressive  stages, 
    until full torque is reached. Unless otherwise 
    specified,  torque specifications 
    call for clean, dry 
    threads. 
    Components should be  at room  tem­
    perature. 
    Thread size 
    M4 
    M5 
    M  6 
    M7 
    M8 
    M10 
    M12 
    DEFINITION OF UNITS 
    Unit Read Definition 
    mm Millimeter 10-3 meter 
    em Centimeter 10-2 meter 
    kg Kilogram 103 gram 
    N Newton 1 kg x m/sec2 
    Nm Newton meter Nxm 
    m•kg Meter kilogram mxkg 
    Pa Paskal N/m2 
    N/mm Newton per millimeter N/mm 
    L Liter 
    cm3 Cubic centimeter -
    r/min Rotation per minute -
    5-6 
    Tightening torque 
    Nm m • kg ft•lb 
    2 0.2 1.4 
    3 0.3 2.2 
    7 0.7 5.1 
    10  1.0 7.2 
    15  1.5 
    10.8 
    30  3.0 
    21.7 
    60 6.0 43.4 
    Measure 
    Length 
    Length 
    Weight 
    Force 
    Torque 
    Torque 
    Pressure 
    Spring rate 
    Volume or Capacity 
    Engine speed  
    						
    							HOSE ROUTING 
    CD Carburetor air venthose 
    @ Fuel tank breather hose 
    HOSE  ROUTING I SPEC I g • I 
    5-7  
    						
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