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Torque Specifications

Just putting this info here so it is easy to find in the future.

Torque specifications:

Type In/lbs

Fuel Bowl Screws 25-30

Secondary metering plate 12-18

Needle/seat locking screw 50-60

Center hung float screw 5-7

Fuel inlet 5/16-24 60-80

Fuel inlet 7/16-24 70-90

Power Valve 40-50

Accelerator pump cover 5

Discharge Nozle/Accel pump 30-50

Baseplate to main body 30-50

Choke plate screws 6

Fast idle cam nut 10

Secondary shaft nut 10

Throttle plate screws 10

Main jets 30-40

Carb to intake manifold 60-80

Fastener type:

Fastener Size

Primary Fuel bowl screws, 4160 12-24 x2 1/2

Secondary Fuel bowl screws, 4160 12-24 x1 7/8

Fuel bowl screws 4150 12-24 x2 1/2

Main Jets 1/4-32

Needle to bowl 3/8-32

Needle and seat lock screw 1/4-32

Power Valve 1/2-28

Fuel inlet to bowl 4160 9/16-24

Fuel inlet to bowl 4150 7/8-20

Accelerator pump cover new style 8-32 x 3/8

Accelerator pump, thick old stlye 8-32 x 1/2

Accelerator pump discharge nozzle 12-28 x 3/4

Baseplate to main body 12-24 x 3/4

Electric choke cover 8-32 x 3/8

Auto Choke to main body 8-32 x 1 1/8

Manual Choke to main body 8-32 x 1

Secondary idle adjustment 10-32 x 1/4

Metering plate 5/32 clutch head 8-32 x 1/2

Baseplate to intake manifold 5/16-18

Center hung float screws 6-32 x 1/2

Vacuum secondary to main body 8-32 x 1

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