19
MOUNT THE
CO
WL
❏
❏
1.
T
a
k
e
a f
e
w min
u
tes to study ho
w the co
wl
is mounted in the f
o
llo
wing photos
.
The co
wl is
mounted via a co
wl r
ing which is per
manently glued
in the co
wl.
The co
wl r
ing is attached to remo
v
a
b
le
co
wl mounting tabs with 4-40 x 1/2" SHCS—three
of the co
wl mounting scre
ws are accessib
le from
behind
the co
wl and the f
our
th one on the top of the
co
wl is accessib
le through the front.
(Otherwise
, the
carb
u
retor intak
e
w
o
uld ha
v
e
to be remo
v
e
d just to
remo
v
e
the co
wl.) Each co
wl mounting tab is attached
to the fi
re
w
a
ll with tw
o 4-40 x 3/8" [9.5mm] Phillips
scre
ws and b
lind n
u
ts
.
The co
wl mounting tabs are
remo
v
a
b
le so that the fi
berglass nacelle co
v
e
r can be
remo
v
ed to access components in the nacelle
.
❏
❏
2.
Disconnect the retr
act door pushrods and remo
ve
the nacelle co
ve
r from the left, inboard wing panel.
❏
❏
3.
Dr
ill 5/32" [4mm] holes through the fi
re
w
a
ll
at the eight precut mar
ks f
o
r the co
wl mounting tabs
.
IMPOR
T
ANT!:
Use care
NO
T
to dr
ill into the fuel tank
when dr
illing through the bottom tw
o holes!
❏
❏
4.
Use a 4-40 x 3/8" [9.5mm] Phillips scre
w
and
tw
o #4 w
ashers to pull 4-40 b
lind n
u
ts into the bac
k of
each hole just dr
illed in the fi
re
w
a
ll.
Use epo
xy to glue
in the b
lind n
u
ts as the
y
go in or use a f
e
w drops of
thin or medium CA to glue in the b
lind n
u
ts after the
y
are all the w
a
y in.
❏
❏
5.
Note that there are tw
o diff
erent plyw
ood
co
wl mounting tabs
—
long
ones (“A”) and
shor
t
ones (“B”).
One of the longer
,
“A”
tabs has a larger
hole in the top
. Press a 4-40 b
lind n
u
t into the larger
hole of that
“A”
tab
.
❏
❏
6.
Mount the nacelle co
v
e
r to the wing panel.
Use tw
o 4-40 x 3/8" [9.5mm] Phillips scre
w
s
, #4 loc
k
w
a
shers and fl
at w
a
shers to mount each co
wl mounting
tab to the front of the fi
re
w
a
ll—the shor
t
“B”
tabs go on
the sides of the fi
re
w
a
ll and the long
“A”
tabs go on the
top and bottom of the fi
re
w
a
ll.
The
“A”
tab with the b
lind
n
u
t goes on
top
of the wing and the b
lind n
u
t goes
to
w
a
rd the
bac
k
.
Note:
Do not tighten the scre
ws all
the w
a
y so the tabs will be allo
w
ed to
“fl
oat.
”
❏
❏
7.
Mount three more 4-40 b
lind n
u
ts into the
three
lar
g
e
holes in one side of one of the
co
wl
rings
and glue them in—note that one of the holes
is smaller than the other three—do not mount a b
lind
n
u
t into that small hole
.
