Rainmaker Technical Help Guide

Misfiring, skipping shots
- Check to see if LP hose is pinched. This is the hose that goes from the low-pressure regulator to the MAC valve.
- Check the o-rings on the low-pressure piston.
- Make sure that the hammer is not worn out.
- Check to make sure that the Mac valve is not sticking.
- Check to see if the bolt o-rings are to tight in the receiver or even just needed some oil.
- Check your batteries are low.
- Check for an electrical short(wires with the insides showing)
- Check to see if the bolt carrier is worn.(the rim around the bolt carrier worn, or chipped.)
- Make sure that your do not have a bent ram shaft.
- Make sure that your air pressure isn't too low. Turn up the velocity.
- Make sure that you are using the brass T ports(unless you have the SuperFlo LP hose kit)

Small leak from MAC valve
-Check and clean the low-pressure regulator seal.
- Dirt in MAC valve
-Oil mac valve(1 drop of oil in the input, needs a thicker oil, 5w-30 motor oil, or Mobil 1 will also work)
- MAC valve is over pressurized, check low-pressure regulator(clean LP reg)
- MAC valve is bad, replace MAC valve.

Chopping Balls or ball breaks
- Make sure that you are using fresh paint.
- Make sure that your ball detent is in the breach of the marker far enough.
- Make sure your breaking paint in the breech, rather then the barrel. Rainmakers almost never chop.

Leak from the barrel
-This is NORMAL for RM's when you first gas up. Cycle 2-3 times and it may go away
-Cup seal worn, replace
-Valve Oring worn, replace
-Valve spring dead, replace with Hardwarz™ Valve spring

Low Velocity
-If using stock reg, check Belleville spring pack. it should be set up as such: { ( ) ( ) ( ) ( ) }. Replace Belleville springs if needed.
-If using aftermarket reg, make sure you have the high pressure spring in. you need ~400psi to operate the marker

Written by Scott Quarles with contributions from Kevmaster