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                                               Tune- Up Specifications

 

 

TYPE

    1966 - 1974

HD no. 3-4

    1975 - 1976

HD no. 5-6

    1977 - 1979

HD no. 5A6 ( standard ) or HD no. 5R6 ( resistor )

    1980 - on

HD no. 5R6A or HD no. 5RL

GAP

 

    1966 - 1969

0.025 - 0. 030 in. ( 0.63 - 0.76 mm )

    1970 - early 1978

0.028 - 0. 033 in. ( 0.71 - 0.84 mm )

     Late 1978 - on

0.038 - 0. 043 in. ( 0.96 - 1.09 mm )

Spark Plugs Recommended are Harley Davidson Brands

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1966-1969

 

  Breaker Point Gap

0.020 in. ( 0.51 mm )

  Dwell Reading

90 degree @ 2,000 rpm

  Ignition Timing
     Retarded
     Automatic


5 degrees BTDC
35 degrees BTDC

1970 - Early 1978

 

  Breaker Point Gap

0.020 in. ( 0.51mm )

  Ignition Timing
     Retarded
     Automatic


5 degrees BTDC
34 degrees -36 degrees BTDC

late 1978 - on

 

Ignition Timing Air Gap
    Late 1978-1979
    1980 - on


0.004 - 0.006 in. (0.102 - 0.152mm )
No Adjustment

Ignition Timing

Electronic

Compression

 

  Standard
     1966 - early 1978
      Late 1978 - 1984


90 psi or over  ( 6.33 kg/cm2 or over )
100 psi or over  ( 7.03 kg/cm2 or over )

Acceptable Variance Between Cylinders
     1966 - early 1978
      Late 1978 - 1984


29 psi or less  ( 2.04 kg/cm2 or over )
10 psi or less  ( 0.70 kg/cm2 or over )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recommended Lubricants and Fluids

 

 

Brake Fluid
  
Through 1975
   1976- on


DOT 3
DOT 5

Fork Oil
  1966 -1969
   1970 - on


HD Hydra-Glide fork oil
HD Type B

Battery top up

Distilled Water

Transmission

HD Transmission Lubricant

Primary Chaincase

HD Primary Chaincase

Engine Oil
  
Below +40 degrees F
   40-60 degrees F
   +60 degrees F and up
   +80 degrees (severe operating             conditons)
   10-90 degrees F (normal             operating conditions)

HD Special Light
HD Medium Heavy
HD Regular Heavy
HD Extra Heavy Grade 60

HD Power Blend Super Premium

Lubricates recommended are Harley Davidson Brands

 
 
 

 

 

 

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