User's Manual

CAUTION: READ ALL WARNINGS BEFORE USING OR ATTEMPTING ANY WORK ON

YOUR M-TAC. SHOULD YOU BE UNSURE AT ANY POINT, STOP AND SEEK

PROFESSIONAL SUPPORT.

Page

7. Q: How do I use the Bob Long LPR tester?

Note: Left facing gauge reads inline regulator (HPR) pressure. Rear facing gauge read LPR

Pressure.

1) De-gas your marker.

2) Turn off inline regulator (HPR ) by backing out adjustment screw counter clockwise until

adjustment screw is flush with base of regulator.

3) Remove firing engine from marker.

4) Lightly grease Pressure Tester o-rings then insert where firing engine was previously.

5) When Pressure Tester is installed properly, side gauge will face markers left.

6) Gas up your marker.

7) Set your inline regulator (HPR ) between 230 and 240psi by turning adjustment screw

clockwise until pressure reads as such.

8) Set your LPR between 70 and 75psi by turning adjuster clockwise until pressure reads as

such. A 3/32” hex wrench is needed to properly engage LPR adjuster..

9) De-gas your marker once again.

10) Re-install the markers engine.

Note: Lightly grease engine o-rings. Engine should slide in mainbody with minimal friction. If

the engine becomes bound in any way an o-ring has probably been ruined. Replace o-ring and

continue install until engine slides in smoothly.