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CLEANING THE REGULATOR:
Figure 5
1. Loosen the hex nut on the top of the regulator and back the adjusting screw out all the
way to relieve tension on the diaphragm spring. See Figure 5.
2. Remove the four screws holding the regulator cover on. The diaphragm and spring
will fall out.
3. Use a spray-type carburetor cleaner to clean the cover and regulator body.
Thoroughly spray into the ports, as well as into the check ball seat area while
depressing the check ball.
WARNING!
THE BRASS SEAT ASSEMBLY IS PRESSED IN AND SHOULD NOT BE
REMOVED.
4. Blow the cover and body dry with compressed air and reassemble following the
diagram.
5. Be sure to readjust the fuel pressure with the adjusting screw after installing in your
vehicle. Pressure adjustments must be made with the engine running.
SERVICE PARTS AND ACCESSORIES:
ITEM PART NUMBER
Chevy Small Block Mechanical Pump Block-Off Plate
12-814
Chevy Big Block Mechanical Pump Block-Off Plate
12-813
0-15 PSI Fuel Pressure Gauge (non-liquid filled) 1-1/2” Dia. 1/8” NPT
26-500
0-30 PSI Fuel Pressure Gauge (non-liquid filled) 1-1/2” Dia. 1/8” NPT
26-502
0-15 PSI Electric Fuel Pressure Gauge (dash mount)
26-503
0-15 PSI Fuel Pressure Gauge (liquid filled) 1-1/2” Dia. 1/8” NPT
26-504
0-30 PSI Fuel Pressure Gauge (liquid filled) 1-1/2” Dia. 1/8” NPT
26-505
90° Elbow for Attachment to Holley Fuel Line
26-69
Safety Shut Off Switch
12-810
Holley Performance Products
Technical Support
Toll-Free Phone: 1-866-GOHOLLEY
Phone: 1-270-781-9741
Fax: 1-270-781-9772
For online help, please refer to the Tech Service section of our website: www.holley.com
199R10367
Date: 12-12-06
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