Sachs SA 280A Repair Instructions

c
Flywheel dynamo magneto centering t oo l
Replacing the ignition or
lighting armature
Fig. 45
l. Pass the leads through a hole
in the centering plate and
in position in centering plate .
2. Place
centering unit in posi-
tion and tighten he xagon
head screw by hand.
3. Remove faulty armatures and
replac e by new ones.
4. Pl ace centering ring in posi-
tion, press new ly fitted arma-
ture against this ring and tigh -
ten bo th screws. After removal
of the ce ntering r ing the gap
between armature core and
magneto flywheel wi ll be of
the c orrect wi dth .
Note:
F& S lf22•25
The F & S centering tool w ill not
be supplied any more when the
prese nt stock is exhausted. Fi g. 45
New ignition or l ighting armat ur es have to be fitted according to the insta llation
instr u ctions wh ich are attached to BOSCH spare parts.
In
order to obtain the maximum ignitio n and lighting power it is recommended to
ma i ntain the gap of 0.25 ... 0.35 mm (0.0098 ... 0.0138 in.) between the armature poles
and the f l ywhee l under any ci rcumstances.
Replacing the contact breaker
The contact breaker s hould be changed when th e contacts, the sli der or the pivot pin
are badly worn; also when the beari ng bush is worn or if the contact arm or the spring
is damaged.
l. Un screw cutout l ead, and, if fitted, noting correct sequence of insula ting washers
for connector angle bracke t in contact carrier.
2. Remove retainer and contact arm from pivot pin (take care of shimming washers).
3.
Un screw fillister head screw and remove c ontact carrier.
4. Un screw pivot pin f rom armat ure base plate .
N
ew par ts should be fitted in reverse order, proceeding as follows:
Caulk the pivot pin aft er screwi ng in.
U
se o nly the contact br e ak er assembly spec ifi ed for this engine.
Wh en fitted in positio n, the contacts on the contact arm must n ot be disp la ced or
tilted.
Apply BOSC H Ft l v 8 grease to bearing before fitt in g.
Smear BOSCH Ft l v 4 grease on the felt lubricating pad and greaser wedge in the
s lider. (BOSCH grease is obtainable in tubes from all BOSCH suppliers. )
Do
not allow any grease or oil to reach the co ntacts.
Replacing the condenser
1. Un so lder both leads .
2. Push
the defectiv e condenser out of th e armature base p lat e w ith a wooden dowel.
3. Remove the sea lin g c aulk from the hol e wi th a triangu l ar scraper .
4. In
sert new cond enser and carefully caulk again .
5. Solder both cab l es to their term in als.
27

Sachs SA 280A Specifications

General

Brand	Sachs
Model	SA 280A
Category	Engine
Language	English