User's Manual
8
CAUTIO N: READ ALL WARNINGS BEFORE USING OR ATTEMPTING ANY WORK ON
YOUR MARKER. SHOULD YOU BE UNSURE AT ANY POINT, STOP AND SEEK
PROFESSIONAL SUPPORT.
Maintaining the LPR
The LPR contains both right and left hand threaded parts. Following the disassembly instructions
below will prevent damaging your marker.
1. Unscrew the LPR assembly from the
front of the marker. Remember Lefty
Loosy and Rightie Tightie. If you have
trouble loosening the LPR use one of
those things your mom has in the kitchen
to help grab jar lids. Don’t use pliers.
Yes, someone tried and so now we have
to make sure everyone knows it is a bad
idea.
2. Remove the adjustment screw from the
end of the LPR..
3. Insert a 1/4 hex wrench in the front of
the LPR cap and a 5/16 hex wrench in
the back of the LPR housing. Turn the
wrenches CLOCKWISE to separate the
LPR cap and housing. Yes, this one part
is Rightie Loosie and Lefty Tighty.
4. Once you separate the LPR cap and
housing remove the piston from the back
of the body using needle nose pliers to
grasp the nubbin on the end. Our main
engineer is annoyed that the term
nubbin stuck, so we enjoy tormenting
him with it.
5. Inspect the surface of the piston and o-
ring for excessive wear or nicks. Wipe
off the old grease and replace the o-ring
if necessary.
6. Use a swab to clean the interior of the
LPR housing. Never replace or attempt
to service a working main valve.
7. Lubricate the piston o-ring with grease.
There is a concave area around the o-
ring that holds additional lube and
reduces the need for frequent
maintenance. Gently replace the piston,
and spring back into the LPR body.
8. Tightly screw the LPR cap to the LPR
body – lefty tighty! Put a drop of blue
Loctite on the adjustment screw threads.
In general you should always test the
pressures after performing maintenance
on the LPR.
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