3
x
5mm(bi
nd)
1.
4
x
3mm(r
oundhead)
18
Schweizer300C
Changing Motor
Mai
n
Mot
or
Tai
l
Mot
or
Connect
or
Fuse
Washer
■
Changing Main Motor
■
Changing Tail Motor
Mot
or
i
s
subj
ect
t
o
wear
and
t
ear
.
Use
f
ol
l
owi
ng
r
epl
acement
t
i
me
f
r
ames
as
a
gui
de.
Change
as
per
i
l
l
ust
r
at
i
on.
Connect
or
Too
t
i
ght
.
Too
t
i
ght
.
Tail Motor Gear
Main Motor Gear
Gi
ve
gear
s
one
f
ul
l
r
ot
at
i
on,
and
adj
ust
space
so
r
ot
at
i
on
i
s
l
i
ght
and
smoot
h.
Washer
Par
t
s
Repl
acement
Ti
me
Fr
ames
Mai
n
Mot
or
Pi
ni
on
Gear
10T
about
50
Fl
i
ght
s
about
50
Fl
i
ght
s
Par
t
s
Repl
acement
Ti
me
Fr
ames
Tai
l
Mot
or
(Ear
l
i
er
change
maybe
needed
i
f
t
ai
l
r
ot
or
hi
t
s
t
he
gr
ound,
or
ot
her
f
l
i
ght
condi
t
i
ons
cause
ext
r
a
wear
)
.
about
15
f
l
i
ght
s
Change motor when model ascends weakly, or makes a strange noise.
Change if rudder control becomes unstable. If flight is continued without
changing, tail control will be lost and the model will spin around.
If main rotor tracking is off line, Tail Motor durability is affected.
Adjust tracking properly when flying.
MAINTENANCE AND REPLACEMENT OF PARTS
9
Gi
ve
gear
s
one
f
ul
l
r
ot
at
i
on,
and
adj
ust
space
so
r
ot
at
i
on
i
s
l
i
ght
and
smoot
h.
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