TAKING DOWN THE ENGINE
Remove a
ll
connections
from
engine
10
frame
or unit
(cables.
e lectric
connections
etc.).
Unscrew
exhaust
muffler,
i.
e. manifold
a
nd
brocket.
Remove the
engine and
clean
thoroughly
before
taki
ng down.
Whe
n
giving the
engine
a
general overhaul,
components should
be
removed
in
the
sequence indicated.
Fig.
1
Fig.
2
6
Exhoust
muffle
r,
corbure tto
r
ond
electri
c starte
r
Fig
. 1
Screw dow
n
engine
on Ihe as-
sembly jig
with
2 he)(090
n
head
bolts M
10
)( 40, as shown
in
Ihe
adjoining
ill
ustration.
Re
move
intake
silencer (I).
Unscrew
adapter
flange cnd
la ke off cover plate
(21
or un-
screw intake si lencer
(Fig.
302,
p.
53) with cover p
lale.
Pull
off impulse pipe
(4)
.
Re move co rb urellor
(3).
Re move ins ula ting
sleeves
and
insula
ting flange.
If there
is
on intake
stack be-
tween corb
urettor
and
cylinder,
remove it only
if
necessary.
Unscrew electric
starter.
Recoil
starte
r,
starte
r hu
b
and
fan
Fig. 2
Detach recoil
slarter.
Unlod; nut in Ihe slorler hub (1).
Hold starler hub
with
retaining
lever
(2,
repai
r
too
l
no. 6), un-
screw the nut and
remove
starter
hub
with spring ring
and
washer.
Nole
:
In the case of the Fairba nks recoil
starter
re
lease nut, hold starter hub with
strap
spanner and
unscrew
nut.
I~
the case
o
f
the.
recoil starter
wit
h
friction iows rele<lse nut, hold
slorter
hub with
pin
spanner (repair
tool
no.
7)
ond
unscrew il.
Toke off
storler
hub
with spring
ring
a
nd washer.
Remove
th~
cylindrical pin
and .the beorin!;! ro ller from the magneto flywheel
(Fair-
banks reCOil starter)
resp.
2
bearing rollers
(recoil
starter with
fr
iction jaws).
Toke off
cover
disc
(3).
Unscrew
fan and remove gasket.
Cover
plate
and
fan
houl
ing
Fig. J
Unscrew
fixin~
clip
(3)
for
igni-
tion
lea
d
(not
In
the case of 75 W
eq
uipmen
t) a nd cover (1).
Detach leads a
t
termina ls 1, 2
a nd 3 of
the
term inal box {5} and
re move fan housi ng (4).
Note
:
Re move cover flanges on fan
ho
using
for electric sta
rt
er con-
nectian, if f itted.
Take co re of dowel tubes.
Nole
:
Remove
short-circuiting
button
only
if
necessary.
Remove
ru
b ber
cop (2) and
short-ci rcuiting
builon.
Detach
short-circuiting lead
from
insulato
r.
Remoun
l parts in reverse
order.
Magnelo
flywh
eel
Fig.
4
Fit prote ctive cop
(reroir
tool no.
4) to threaded end 0 crankshaft.
Fit
retai ning
lever
(1, repair tool
no
. 6) 10 magneto flywhee
l
and
pull o
ff the fl
yw hee
l
by
means of
the e xtracto
r
(2, repai
r
too
l
no.5).
Fig
.
~
7
Need help?
Do you have a question about the SA 290 and is the answer not in the manual?
Questions and answers