User's Manual

FUSE™ BOLT
ASSEMBLY AND MAINTENANCE
FUSE™ BOLT
ASSEMBLY AND MAINTENANCE
BOLT MAINTENANCE
Regular M7 Fuse™ bolt maintenance is vital to the performance of the M7.
If the Fuse™ bolt is not kept well-greased and the o-rings in good shape, the performance of the M7 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 M7 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 M7 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 (013 BN70)
3 Inside bolt stem (009 BN70) 8 Outer sleeve (020 BN70)
4 Rear bolt stem (009 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.
FUSE™ BOLT OPERATION
To achieve top performance from your M7, it is important to understand the basic
operation of the M7’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 t
o the bolt at two
points. A high-pressure supply of
air is routed to the back of the bolt
into the supply 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 M7 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 013 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 013 o-ring, the air contained in the supply chamber
is r
eleased. 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.
NO
TE: L
O
W OR ERRA
TIC VEL
OCITY MA
Y BE DUE TO A LOW
BATTERY NOT SUPPLYING AMPLE ELECTRICAL CURRENT TO THE
SOLENOID. IN THIS CASE, CHANGE THE BATTERY.
When servicing your marker:
• Make sure your hopper is removed
from the M7.
• Make sure there are no paintballs in the
breech of the M7.
• Always remove the air supply and
relieve all gas pressure in the M7
before disassembly.
• When using the M7 in temperatures
below 50º it may be necessary to lube the
FUSE™ bolt mor
e fr
equently.
WARNING
1
2
9
10
3 4
5
7
6
88 8 8 8
1
2
3
4
BACK POSITION
FORWARD POSITION
9
8