FUSE™ BOLT OPERATION
To achieve top performance from your DM6, it is important
to understand the basic operation of the DM6’s patented
FUSE™ bolt system.
This design consists of three sleeves threaded together to
capture the only moving part of the system, the bolt.
The FUSE™ Bolt has four components
1
Cylinder
2
Bolt
3
Top Hat
4
Rear Cap
Air is supplied to the bolt at two points. A high-pressure
supply of air is routed to the back of the bolt into the sup-
ply chamber. This air source is responsible for propelling
the ball. Low-pressure air is supplied from the LPR to the solenoid. From the solenoid, the air is routed through
two small holes to the section of the bolt referred to as the cylinder.
When the DM6 is aired up, air is transferred by the solenoid to the front of the cylinder. This air pushes against the
bolt sail and the bolt is held in the back position. When the bolt is held back, the 014 o-ring in the top hat seals
around the bolt and contains the air in the supply chamber.
When the marker is fired, the microswitch is pressed, telling the solenoid to switch the flow of air from the front of
the cylinder to the rear of the cylinder. Air that enters the rear of the cylinder will push on the bolt sail, moving
the bolt forward. The air in the front of the cylinder is vented.
As the bolt moves forward, the tapered stem passes through the top hat. Once the bolt stem can no longer seal
against the 014 o-ring, the air contained in the supply chamber is released. The air passes through the venturi
ports in the bolt and out the front of the bolt to propel the ball. When the bolt is in the forward position, the inside
bolt stem o-ring prevents the flow of air from continuously flowing through the marker when the bolt is forward.
This helps the marker shoot much more efficiently.
Note: Low or erratic velocity may be due to a low battery not supplying ample electrical current to the solenoid.
In this case, change the battery.
F U S E
™
B O LT
- Ass e m b ly a n d M ai n t e n a n c e
F U S E
™
B O LT
- Ass e m b ly a n d M ai n t e n a n c e
FOR
FOR
W
W
ARD PO
ARD PO
SITION
SITION
1
2
3
4
When servicing your marker:
• Make sure your hopper is removed
from the DM6.
• Make sure there are no paintballs in the
breech of the DM6.
• Always remove the air supply and
relieve all gas pressure in the DM6
before disassembly.
• When using the DM6 in temperatures
below 50º it may be necessary to lube the
FUSE bolt more frequently.
W A R N I N G
BOLT MAINTENANCE
Regular DM6 Fuse™ bolt maintenance is vital to the performance of the DM6.
If the Fuse™ bolt is not kept well-greased and the o-rings in good shape, the performance of the DM6 will be greatly hindered.
To remove the bolt, you will need a 1/4“ Allen wrench. Unscrew the bolt from the rear of the marker. It only takes one and one half revolutions to unscrew the bolt so that it
can be pulled out. After the bolt has been cleaned and greased and is ready to be inserted into the body, be sure all bolt sleeve components are screwed together snugly.
Slowly push the bolt into the body. Take care not to cut or nick the o-rings as they pass the threads.
GREASE THE DM6 FUSE™ BOLT EVERY 10-15 THOUSAND SHOTS.
BEFORE INSTALLING THE BOLT INTO THE MARKER, BE SURE ALL BOLT SLEEVE COMPONENTS ARE SCREWED TOGETHER SNUGLY.
If you do not grease the bolt, you will run the risk of damaging o-rings. This will create excessive friction and drag on the bolt, ultimately resulting in breaking the bolt. When
greasing the DM6 Fuse™ bolt, pay special attention to all o-rings that are on the bolt and that ride on a surface of the bolt. The first seven o-rings listed below should be
generously greased during maintenance.
FUSE™ BOLT O-RING LIST
1
Bolt tip (014 BN70)
6
Top hat (017 UR70)
2
Bolt sail (015 BN70)
7
Top hat (014 BN70)
3
Inside bolt stem (011 BN70)
8
Outer sleeve (020 BN70)
4
Rear bolt stem (011 BN70)
9
Front bumper (015 BN70)
5
Front wall internal (017 UR70)
10 Rear bumper (111 BN70)
NOTE: ALL REMAINING O-RINGS SHOULD HAVE A THIN COATING OF GREASE AS WELL.
1
2
9
10
3
4
5
7
6
8
8
8
8
8
FIGURE 1
8
9
BACK POSITION
