Damper Adjustment; Door Latch Adjustment; Ash Door Adjustment; Gasket Replacement - Vermont Castings Defiant Flexburn 1975 Owner's Manual

B. Damper Adjustment
The tension on the Defian
adjustable to compensate for compression of the gasket that
seals the damper to the upper fireback. To adjust the damper:
1. Remove the griddle. Loosen the lock nut at the center of
the damper, Figure 3.2.
2. Turn the pressure screw approximately one half turn
clockwise with an Allen wrench provided with your stove.
3. Tighten the lock nut. Prevent the pressure screw from
turning as you tighten the nut. Re-test the damper.
Pressure Adjusting
Screw
Allen
Wrench
Figure 3.2 - Adjust the damper with the Allen wrench.
Tighten the Damper Handle as Needed
A handle on the left side of the stove controls the damper.
The handle attaches to the damper rod with a set screw.
Periodically check the set screw and tighten as necessary.
C. Front Door Adjustment
The load doors are factory adjusted for clearance, proper
sealing and latch operation. However, the doors can
sometimes shift in transit or from use and may need to be
readjusted. The adjustment/alignment procedure is simple
ST554
and only requires a 7/16" wrench and a few minutes. We
have provided a detailed video explaining how to properly

Damper adjustment

adjust and align the doors.
11/00
D. Ash Door Adjustment
Just like the load doors, the ash door is factory adjusted for
properly operation and minimal sag. If the door does require
adjustment to minimize sagging at the latch side, a simple
adjustment requiring only a 7/16" wrench will get the door
back into proper alignment. We have provided a detailed
video explaining how to properly adjust the ash door.
Note: For video instruction please refer to www.
vermontcastings.com. Click on the YouTube link located
in the upper right hand corner next to the "Search" bar.
17
(as Needed)
® Flexburn 1975's damper is
t
Lock Nut
Damper
►
Vermont Castings • Defiant Flexburn 1975 Owner's Manual_R1 • 2021 - ___ • 08/21
Roller
Lock Nut
Set Screw
Flat Washer
Figure 3.3 - Rotate pawl and/or remove flat washer to adjust latch.
E. Gasket Replacement
ST1154
Your Defian ® Flexburn 1975 uses fiberglass rope gaskets to
t
door pawl
make a tight seal between some parts. With use, particularly
on moving parts, gaskets can become brittle and compressed
and can begin to lose their effectiveness. These will need
periodic replacement.
The sizes of replaceable gasket are listed below, along with
their applications.
Gasket Diameter......And the Parts it Seals
5/16" The griddle to the stove top (wire reinforced gasket)
5/16" The damper to the upper fireback
3/8" The front doors to the stove front; and the doors to
each other.
3/8" The ash door to the front of the bottom panel
3/16" The outer glass panes to the door
If you need to change a gasket, first obtain an appropriate
replacement from your Vermont Castings' Authorized Dealer.
Wait until the fire is out and the stove has cooled. Be sure to
follow the standard safety procedure for working with dusty
materials: wear safety goggles and a dust mask.
The procedure for replacing gaskets is the same, regardless
of the gasket location. Follow these steps:
1. Remove the existing gasket by grasping an end and pulling
firmly, Figure 3.4.
Figure 3.4 - Remove gasket then clean channel with wire brush.
Shoulder Screw
Handle Stub
(as needed)
8390-035C