Sachs SA 340, SA 340 SS (super sport), SA 370 Repair Instructions

c(SJ

SACHS

-

Repair Instructions No. 4075.8 E
$ACHS

Type

Snowmobile

SA340

Engine

.

340

370

SS

(super

sport)

~

Edition

FICHTEL&SACHS

December

1969

AG · 8720

SCHWEINFURT

.

·~·

CONTENTS

Preface
Installation
{with
Installation
(with
Installation

Technical

Repair
Taking
Work

Asse
Test

Engine

Engine

Instructions

Instructions

Instructions

BOSCH solenoid

Instructions

BOSCH

In

structions and
BOSCH iner
Laying-up
Lubrication

Tightening

Repair
Engine

. . . . . . . . . . . . . . . . . . . . . .

dimensions

solenoid-controlled

dimensions

inertia-pinion

dimensions

data

tools

and

down

the

on

individual
SACHS
(without

spe

dismantling
Changing
Recoil

star

Flywheel

Replacing
Carburettor
Decarbonizing

mbling

the

-runn

ing

and

with

BOSCH

with

BOSCH

Operation,

Starter

faults
and
and
and

and wiring

solenoid-controlled

tia-pinion

the engine ..

and

torques
dimensions
fault

s .

for

for

type

for

assembly

SACHS

starter)

SACHS

starter)

SACHS

jig

SA 340
..

.

SA 340

SA 370

and

...

and

engine

parts

. . .

cial

extracting

crankshaft

ter

..

dynamo

the

magneto

magneto

the

bearings

.

..

housing

tool for

crankshaft

engine)

..

. . .

..

centering tool

or

. 0 •
..

the

. . . . 0 • • 0 • • • • • • • • •

the

exhaust

engine

. . . . . .

running-in

solenoid-controlled

inertia-pinion

maintenance

o o o o o

wiring

d i

agram

wiring

diagram

wiring

diagram

-controlled
diagram

wirin g d i

agram for

type

maintenance chart

for

bolts and

..

.

...

muffler,

the

engine

type

and

lubrication

••••

for

dynamo

for

dynamo

for

dynamo

starter (Type

for

dynamo

starter

(Type DD) . . . . . . . . . .

dynamo

starter

(Type DG)

o

••

••

nuts

. . . .

cylinder

..

. o •
...

starter

starter

o

•••

magneto
magneto 12 V 75 W .

magneto

DD) . . .

magneto

magneto

.

SA

340 SS

..

..

SA

340 SS

oil

.

flywheel

and

•••••

. . . . .

(Type DD)

(Type DG)

of

electric starters

o • •

12

12 V

12 V 75

12 V 75

.

seals

cylinder head

••

• •

V 40 W .

40

Wand

......

Wand

Wand

Folding

Folding
Folding
Foldi

.

ng

Page

2

sheet

sheet
sheet
sheet

4

6

9

9

11

13

16

18

19

22
23

28

29

30

31
33

34
35

36

37

38

39

40

41

42
44

PREFACE

This

manual
guidance
an

efficient
intended
training
school.

It
workshop
details
found

Of
service
workshop,

.

Dealers
circulars
available
It
for

available

will

be

of

helpful when

course,

to

are

is

emphasized

u,se

in

is

designed

and

information

repair

as

and

a substitute

to

found

useful

practice.

the

various

good

maintenance

customers

and

trained

requested

containing

to

every

that

the

workshops

to

necessary

maintenance

for

personnel

as a ready

Our

illustrated

units

and

used

in

call

for

personnel.

to

make

technical

individual

all

information

give

dealers

to

service,

the

practical

at

our

customer

reference

Spare

their

construction

conjunction

and

repair

good

equipment,

this

manual

information

responsible

of

and

not

and

enable

Parts

with this

work

and

for

this

nature

for

their

them

to

but

it

is

in

and

theoretical

service

in

day-to-day

List,

containing

, will

booklet.

and

a well

and

all

modifications

actual

servicing.

is

office

staff all

provide

no

way

training

also

be

efficient

fitted-out

SACHS

intended

filing.

We
to

2

hope

all

our

that

this

dealers,

manual

agents

will

and

be

of

real

practical

associates.

FICHTEL & SACHS

SCHWEINFURT

Service Dept.

assistance

AG

Technical

Descripti

Type: Fan-cooled single-cylinder two-stroke gasoline
Direction
Swept

Bore:

~

Stroke :

Comp

Output:

Ignition:

Ignition

Contact b reaker

Pole shoe

Spark

Carburettor:

Carbure ttor setting :

Air

Exhaust muffler:

Method

Engine lubricati

w

Data

on:

of

rotation: Anti-clockwise

capaci

ty:

ression

ratio:

ti

ming:

gap:

gap:

plug:

cleaner:

of

starting:

•

on:

SACHS

SA

340

9

22

HP (DIN

) at

525

0 rpm

12 V

12 V 75

240

= 1 tu

rn

T 1

open

BOSCH M

Main jet = 1 turn open

Idling j

et

SAC

HS

as

cu in.)

in.)

rJ;

3

36

75

cc

(20.503

.5

mm (2.972

I

I

I

I

26

i

BOSC

0.4 ± 0.05

running engine

running engine 7 ...

I

Tl

LLOTSON diaphr

HD-13

~

12 V

stopped engine : 0.2 ... 0
runn ing engine: 4.1.. .4.7

40

W equipme nt : stopp

W equipment: sto

I

Swirl-type exhaust silencer

on

,~·

request solenoid-controlled starte r 12 V 0.4 H

or

inerti

necessary battery

Two

-stroke mixture mixed

SA

340

seen on the output sh

75

mm

(2.779 in
11

HP

(DIN)

H flywheel magneto
40Wor

.4

mm
mm

mm (0.

ed

engine

pped

engine

BOSCH M

A 1

'h''

(38.10

Intake silencer

Recoil starter

a-pini

on type

SS

(super sport)

.)

at

6000

rpm

12

V75

W

before

TDC

before

TDC (0.1968 ... 0.2283

016

± 0.002 in.)

32

...

36

14

...

18

25

...

29

11

260

T 1

agm

car

burettor

mm

dia

Main j

Idl

starter

}2 Volt

32

25

: 1 ratio

I

engine

aft

of the engine

I

'·

I

I

I

(0.00

79 ... 0.01

mm

(1.2598

...

(

0.5511

mm
mm

mm (0.2756 ... 0

...

(0.9842 ... 1.

I

.)

I

et

= 1

in

1f,

g jet = 1 t

12

V- 0.4

.. ,

38

Ah

HP.

23.5
with carburett

24.5
wi

57

in.l
in.

1.4

173 in.l

0.7087
1417

.4331

HR-1

turn open

urn

open

P.

SA

CHS

SA

368

cc (22.4

55

rJ;

79

mm

(3.1

9.7

HP

(DIN)

or HR-

HP (DI

N)

th carbu rettor

in.
in.l

in.

BOSCH M 240

8 A

1'

11•"

(

30.

370

cu in.)
10

at

5250

at 5250

HD-

T 1

16

mm

in.

)

rpm

18

A

rpm

13

A

dia.

)

REPAIR TOOLS

AND

ASSEMBLY

JIG

'{J

14,6

21,

-

1

2

·

~

'{J

6

~

,._

.

..;

'fJ21

,9

Cj

3

4

9

12

13

14

~

17

4

11

15

16

F &

SI..071:22/2

lllustr.

No.

1
2
3
4

5

6

7
8

9
10
11

12
13

14

15
16

Part number

0276 065101

1447 020 000.8

011

1449

000.8
0976 088 100
0976

111

100 Retaining lever

0276161

101

0276 164 102

1476 012 000

0977 063105

0276 135 000

137 6 020 000.8

0276 170 000
1476 013 000.8

1447 009 000.8
1476 014 024.8

1476 014 000.8

1447 009

001

147 6 014 023.8

Repa

I

Gudgeon
I

nsert
Locating pin
Protective

Oil

seal

Ex

tra

.8

Thrust b

spare
Extractor
Ti

ming
Revolu

rque

To-

xt

ractor sleeve

E

cons

1476

1440 027 001.8 h

1476 012 000.8
Clampi ng ring,
Extractor

of

tractor

Ex

(recoil
Clampin

.8

xtr

actor

E

bea

D

es

cription

ir

too

ls

pin ex

tractor

for gudgeon

cap,

for

pin

piston

14 mm

extra

ctor

dia. bore

extractor

ctor hook

gauge

ti

ear

ing a·ssy.,

part

for

on

counter

4 mm

for

magn

for

(1

0276161

eto

fly

spark

advanc

piece

101

whe

)

el M 50x1

e

key X

assy

.,

isting of:

011

roll

000.8 extra

she

lls

er

bearings

shells

st

arter)

g ring,

shells f

ctor

exagon

thrust

I.

D.

for

for

sleeve
head

bearing

bolt
assy.

58 mm X X

inner races

NJ 306 C3

bearing

NA

bushing

. . . . . . .

I.

D.

85.5 mm

or groo

ved

ball

ring 6306 C3

for

engine

tn
tn

0 0 0

.... ....

""

""

<(

<( <(

tn tn tn

X X

X

X
X X
X X
X X
X

X

X

X

X X X
X X

X X

X

X

X

X X

X

X

X

X

X X

X X

,.._

""

X
X
X
X
X
X

X

X
X

X
X
X

X

X

X
X

X

I

17

0276

081

18

0276 082 000 Swi

19

0276 085 005 S

20

0977 0

41

000

000

Assembly jig

Clamping

ve

base

l unit

etscrew

Mounting

plate

X X X
X

X X
X X
X X

I

I

X

X

I

5

TAKING

DOWN

THE ENGINE

Remove

etc

U
Un
Rem

When

se

Fi

all

deflector

the

giving

conn

engine

.).

nscrew

screw exhaust mu

ove

quence indicated.

g.

1

ections

from engine

on

cyl

inder

on

ffl

er, i.e.

man

and clean thoroughly bef

the

engine a gen

eral

to

frame

SACHS SA

ifold

and

ove

rhaul , comp

and

340

and

bracket.

ore

taking

unit (cables, ele

SA 370,

onents shou

Exhaust
electric

Fig. 1

Scr
sembly
bolts
adjoining illustration.

Pull
Remove

carburettor
Rem

insulating
Rem

sary.
Unsc

Re

Fig. 2

Detach
Un
Hold

lev
screw
hub

Rem
s

Unscrew
ga

if there is one.

down.

muffler, carburettor

starter

ew

dow

jig w ith 3_

M l 0 x 40, as shown in the

off impu

ov

e rns.ul

ove flan

rew

coil

starter, starter

reco

lock nut in the

sta·rter h

er

(3,

th e n

with

ove

pace

r.

sket.

ctric

ld

be removed in t

n engine on the as-

hexagon

lse pipe

int

ake

sile n

(2)

.

ating

flange.

ge

{l) only

electric

spr
2 cylin

starter

il

starte

ub with r

repair too

ut

and re

ing ri

ng

dri

fan

(l)

starter

connections

hecid

(4).

cer

(3) and

sleeves

if

neces-

(5).

hub

and

r.

hub

etaining

l no. 5), un-

move starter

and

washer.

cal pins

and

and

remo

he

and

and

fan

(2)

ve

.

Fig. 2

6

Cover

plate

(onl y

and

fixing

wit

(l

).

Fig. 3

Unscrew
lead

and

cover

Detach leads
and 3 of
remove fan

Note:

Remove _

housing

nection, if

the

terminal

housing

cover

for

electric starter con-

fitted.

When removing

pull

the

insu

l

ead through

T

ake

Note:

Rem

ove

on

ly

if

Re

mov

circuit

Detach

in_s

ulator

mount

Re

lating hose
.

care of c!owel

. ·

short-circuiti

necessary.

e ·ru

bber

ing button.

short-cir

. :

part

s in

fan

housing

clip

for

h 40 W

equipm

at term

box

(3)

flanges on

the

fan

tub

ng

cap

(2)

c~itin

g.le

reverse ord

ignition

ent)

inal

s 1, 2

(6)

and

.

fan

housin

(5)

with

es.

button

and short

·

ad

f

rom

er.

g,

F & SL.-075: 22

Fi

g. 3

-

Magneto

Fig. 4

F

it

.

4)

F

it
no.
pull

th

e ex

no

Labyrinth ring
ba

Fig. 5

Un
On

pull
of
pull
rubber cap

protect

to

threaded

ret

aini

5)

to

off

the fly

tra

. 7

).

se

plate

screw lab

engin e

ignition

the

spark

off

rubber

flywheel

ive

ng lever (l ,
magne

ctor

wit

(2)

ignition lead
Un

screw

rem

and

).

armature

ove

(on

insul

Woodr

and
tion lead
ment)

ead

l
Remove

cap

(re

pair too

end

of

crankshaft.
repa

to

flywheel

wheel

by

(2,

repair tool

and

armature

yrinth

rin

g (5).

h 40 W equipm

lead

with

spri

plug terminal

sleeve (1) a

and

screw

socket.

base

it together w

ly with

40 W eq

ating

tube (w

uff

key

.

ir tool

means

ng

out the

plat

e (4)

ith

igni-

uip-

l no .

and

of

ent,

out

(6),

nd

ith

Fig. 4

Fig. 5

7

Fig. 6

Use only genuine

SACHS

spares.

Cylinder

head,

cylinder and

piston

Fig. 6

Unscrew

cylinder

head

and

linder.

On

SACHS SA 340 SS,

cylinder

Pull

Dang

(
rings

Remove

off

er

.)

head

cylinder

of

cylinder

gasket.

without

breaking

flange

remove

twisting.

gaske

Note:

The

cylinder

twice.

A

(see

cylinder

Use

Spare

piston

be

rebored.

Place

cylinder

s

lott

ed

wooden

Cov

er

the

the

two

sar

y,

force
gudgeon
tool

no.

tool

no. 2).

When

fitting
should
the

be

piston

ves. (Danger

can

appropriate

Parts

List).

with chromium

bearing

surface

on

board

crankcase,

wire

circlips. If

out

gudgeon

pin

extractor

1}

and

insert

the

steel

taken

rings

are

of

breaking

be

home-made

(1

take

(3,

(2,

band,

to

ensure

in

their

rebored

-pla
cannot

).

neces-

pin with

repair

piston

rings.)
Remove

slotted

wood

en

board.

Crankcase and crankshaft

Fig. 7

Unscrew 6 hexagon
screws

from

crankcase.

socket

Unscrew hexagon head bolt
Fig.

3)

t

apping

er

takeoff

rubber
Remove

tak

eoff

care

of

Unscrew
oil

drain

Uns

crew

side

from

he

at

it

F)

for

(grooved
Clean

all

for

wear

and split

the

hammer.

crankcase

side

dowel

screwed
cock

crankcase

the asse

to

1 00

removing

ball
parts

and rep

crankcase

crankcase

side slightly

ha lf

with a

half

and

gasket.

tubes.

nipple {1}

(2).

half

magneto

mbly

...

150 ° C (212 .. . 302 °

the

bearing)

jig

crankshaft
.

thoroughly,

lace

when ne-

power

cessary.

cy-

piston

t.

piston

ted

out

repair

care

that

groo

head

{4,
by

pow

Take

and

and

check

-

-

8

WORK

ON

INDIVIDUAL

PARTS

SACHS

special extracting tool

for

(without dismantling the engine)

FICHT

EL

da

mag

ed

oil

necessary.

& SACHS

Engine t

roubles

relatively short time.
When

replacing

Extracting oil

Fig. 8

Before

ext

racting

to

record

sure
si

on

x, o
new
same

or

oil

seal can

dimension.

Note:

If

the

correct

ion

is

s
troubles
bor
tati

not

may

es

in the era n kcase

ng

parts

parts.

AG

have

sea

ls

caus

oil

can

ed
seal

be

repla

by leak

s,

the

deve

seals

the

oil

ord

seal be

er

that the

dimen-

to

the

dim

en-

installation

y,

in

be fitted

installation

adhered to, engine

occur

by

closed oil

or

by

moving

again

ro-

st other

loped a special

ced w

ing

or

foll

owing

F

crankshaft oil seals

ithout a major

damaged

poin

ig.

8

extra

disasse

oil

seals can thu s be

ts should

cting

be

tool

mbly

borne

by

of

in m

means

the

engi

remedied

ind:

F l S

of

ne

which
being

1n

077:

l

a

Fi

g.

If
outs
or
not

9

the

ide

other

be

oil seal

by

means

locking

extracted

is locked t

owards

of a collar

element, it can-

.

Q

(a)

Fig. 9

9

Fi

Fi9.

F

ig.

10

Place

the

sition

extracting tool

in such a

ho

oks

(4) grip behind

steel rim of

on

the

si

cylinder

care

that

rew

(3)

sc
Screw in

oil

seal.

F & S

400:58

g.

10

Fig.

11

If the gap
sheet steel
narro

w and

can n

ot compl

position,

racting

ext
hooks

(l) in in c

Rem

ount

as

described

Note

:

If the

oil

dation

),

break.

There

11

to knock

force fit by

way

th

e o

legs

screws {1

shaft

in a

st s

il

(2)

(5)

lign

crew

two
head

are
thru

betwee

rim

of

oil

the

extracting tool

ete

leg

tool

off

lin

and

ly

one leg

and

ed

ext

take

under Fi

seal has

got

the sheet steel rim m

fore it

th

e oi I sea I out

mea ns

of a tub

in

po-

that the two

the sheet

seal. Pre-ten-

even

ly with

),

taking

and thr

ust

ment.

and

extra

n sha

ft

and

seal is t

oo

be placed

of

ert

the

bot

ins

position.

ract

oil seal

g. l 0.

stuck (

oxi

is

advisab

of

e.

ct

in

h

-

ay

le

its

Fitting

Fi

g. 12

10

the

oil

seal

Fig.

12

Before

fitt

pace a·ro

s
wi

th a littl

and ligh
To

oil seal
sh

arp

sh

ell slee ve. If necessary, p

sm

sh

arp edges.

und the tens
e hea t-resisting

tly smear

protect

th e sea

from damag

edges on the

ooth adhesive

Place o il seal in pos

ing the o

pr

ess

it

in

e,

8).

by

taking

dim ens

tub
lation

ig.

(F
The oil seal

when

bei

ng pressed in.

means

care

ion

must

il

seal,

ion

the

sea

ling

lip

e caused

shaft

tape arou

ition a

of a suitab

of

exact

x, o

not

be

fil

l the

spri

grease

lin

g l

of

, use

instal-

and

tilted

ng
ip.

the

by

ut

nd

nd

le

y

Changing crankshaft bearings

H

eat

crankcase

bearings

In

sert new

strike a stop

ess

in

Pr
side
case

new

until

halves

hal

and

crankshaf

outer

. Press in oil

grooved

they

strike a sto

have

ves

races

been

to

about

t oils
of

roller

sea

ls (with

ball

bearings

p. Press

screwed

100 ... 150 ° C (212

seals.

bearings into

in

together.

sealing lips

into

the

crankshaft

the

inwards)

warm

oil

...

302 ° F). Remo

wa rm

crankcase

until t

crankcase

seals

until flush only

hey

are

halves

ve

outer

halves

flush.

on

after

the

races

until

magneto

the

crank-

of

they

Removal
bearings
ing

Fig. 13

Pull

off

ed ball

the

appropr

(9

and

7)

a nd wi

pair

tool no.

Remove
sat

ing

washers

of
and

inner

bearing

6),

clamping

thdrawal

spacers

inner

grooved

race

(4)

iate

extractor

11

to

(3)

(2).

races

(1)

and

by

rings

tool

16).
and

of

roller

ball

bear-

groov-

means

shells

(8

(10, re-

compen-

of

and

F&S

1..075:25

Fi

g.

13

11

Fig. 14

The

diff

(3, Fig .

erence

13) and

pin

power takeoff side.

of

0.90 mm is

the inn e r

rac

tak

e o f

en

the

up

by

cylindrica

Gauging

Fi

g.

14

Permissible
mm (0.0039 ... 0.0079 in.).

Example:

Inse

rt

inner
cylindrical
into

outer

C

rankcase power takeoff

side:

seali

(with

gas

ra·ce

of

bear

Crankcase
s

ide:

seali

inn

erraceofbearing

C

rankcase

Dimension
crankshaft,

over

both crank

with

a 5 mm thick

s

pac

er

on

takeoff

and

side - 79.00 mm
Axial

play
Pe rmissible axia
play

Difference

to

be taken

inser

ting shims (2, Fig. 13) betwee

l rolle r

bearin

g (1, Fig. 13)

axial

play

of

crankshaft

axial

play

race

of

roller

bearing

race.

ng surfac

ket)

to

e

inner

ing 40.60 mm

magneto

ng su

rface

to

+ 39.

gap

of

measured

power

magneto

up

webs,

l

n the spac

on

80.10 mm

1.10 mm

- 0.20 mm

0.90 mm

the crank

0.1

50

...

0.2

mm

er

-

Fitting the inner race of the cylindrical roller bearing

Wh

en fitting the

Fig.

13

on

way

s be positioned betwee

that

it ca n be s

in

po

sition.

Ne

ver clam

the

inner

uns

erviceable

crankpin

upported

p th e

race

by

.

inner

race of

pow

crankshaft

the

er

at

cylindrical

takeoff sid e),

n th e

two

bo th e nd s, the re

in a

vice at a crankpin

rolle r bearing (

an

inte rmedia te

crank webs

by permitting the

striking it. This will crush the we

. This

12

or

at
bs

do

not

plate

(5, Fig. 13) should a l-

plate must

crankshaft

the

webs

and render

forg

be

and

the

et spa ce rs 3,

of

such a si

to lie fre ely

neve

r try

cra·nkshaft

to

ze

fit

Recoil

The

recoil starter
It can
The illust

Fi

g. 15

starte

also

ration

r

is

be subseq

bel

ow

availab

uently

shows

le

for clockwise

converted

the

two

for

starti

or ant

the

other

ng

directions.

i-c

lockwise

star

ting

starting

direction.

direction.

Recoil s

tarter

in clockwise

Dismantling

Fi

g. 16

Take

out
spring
washer
and

S

crew

brake

ring, friction

0.1 mm (0.0039 in.) thi

starter

off

for

direction

paw

labyri

engine

(as seen

spring

ls

(1

and

nth

ring

running

on

the

(5), shims,

plat

e (3),

ck

4).
(2)

.

power

take-off

Fi

g. 16

side

Recoil

in

anti-clockwi

of

the

starter

for

se

crankshaft)

engine running

direction

F

&S407l

:JJ

13

F

&$4071:34

Fi

g.

17

Pull ou t
50
with

(1

).

T

ake

ing
Withdraw

clamping
Remove

ter

Remove re

sta·
Carefully

spring,
spring

Take

Remove

Fi

g.

Rai.se spri

spn

Hold

em

(19

home-made

'!.

clamping

taper

ring

clamping

hand

le

rter

cord

take

taking

jump

care

cord

18

ng

ng.

coil

spring

starter

out

clamping

with

taining

of

thumbs (see

raising
spring

Note

R

eplace bush

on

:

each

alternate

necessary, us

shells (repa
Take

bush

ir

care of

(2, Fig. 20).

cord

in.)

and

retaining

'

ring

of

starter

and

detach
ring

stop

clip

run

back

out

pull

car

e n

out.

disc

(3,

from

pulley.

end

to

firmly

illustration)

thumb, let

sides.

(2,

Fig.

ing

the

tool

no. 14).

tol

era

approx.

hold

pulley

with

clamp-

handle.

taper

from

cord.

and

star-

from

cord.

(1)

and

completely.

ey

with

ot

to let

Fig. 19).

take

out

with

both

and, by

20)

only

extractor

nce

rin

g in

clip

let

oil

coil

coil

out

if

Fig. 18

Fig. 19

14

Assembly

Fig. 19

Bef

ore

asse

mblin

g,

s

grease

pring

with

the

pulley

coil

(2)

in stud

that

even.

:

on,

on insert

A ero-SHE

41ubricating

with

spr

ing

with

(1)

and

the coil

starti

for

ng

ng as

anti-clo

spri

coil spring rE;,y

and fill

14
ves in the

lubr

icant.

Insert
s

prin

g

by

coil.

Ensure
fl

at

and

Note

F

or

4

F &

Sl.071:36

clockwise
insert coil
illustrati

directi

sely. •

LL

grease

groo-

the same

end

fit

in coil

spring li

direction,

shown

ckwise

'-i

·'

.~

...

coil

of

es

in

er-

-"'

Fi

g.

20

Before inserting pulley, stick disc
(3,

Fig.

19)

0.8

mm

thick

(0.032

with a little

grease

into recess

in.)

of

pulley.

Fit

pulley on to

insert

end

at

stud

(1

Tension pulley/coil spring

rection

of

encountered

Release coil spring
turn until the recess
dering nipple

near

the

ing.

Again hold

hom e-

made

Fig.

21

).

Pull

the starter

rag

soaked

fore

assembling.

Fig.

21

Note:

When

converting starting direc-

tion, reposition cord

bearing

of

spring

).

cord exit until

.

approx. 1h ... 1

in

the pulley rests

cord duct

the

pulley firmly with

retaining clip

cord through a

with

SAE-1

bolt

(4,

for

of

the hous-

0 oil be-

guide

and

Fig. 19)

in

di-

stop

the

sol-

(2)

is

(1,

Fig.

20

also.

Fit

starter

handle

with stop

and

clamping ring on to cord .

starter

cord

Lay

ing

tap

er

and

pull it into clamp-

around

clamp-

ing ring.

Pull

clamping ring into s

handle

and

let

starter

back.

Fig.

22

Screw labyrinth ring

Lubricate

starter

pawl

starter pawls lightly with

cord run

(2)

tight.

bed

tart

SAE

er

and

-1

Fi

g.

0

oil.

Fit start

er pawls

The OJJen

seoti

f;lg and

starter

pawl

side

(1

of

the

long side

face

and

the

starte

in

starting di-

4).
'r pa

of

wl

the

rection.

Fit

washer
thick, friction
ring

and shim

In

sert

After mounting the brake

0.1 ... 0.2

brake

mm

0.1

mm

(0.0039 in.)

plate (3),

spring

s as required.

sprin g

(5).

Fig.

spring, the friction

(0.0039

... 0.0079 in.). . ,

22

Correct this play by putting shims under the

21

pla

brake

('\

..

Je

S!"ring.

should h

ave

a n axial pl

F

&Sl..071:37

F &5

F

&St..071

407

1:31..

:33

ay

of

15

Replacing the magneto housing

2

Fi

g.

24

Fi

g.

25

Note:

On equipments with
magneto

The
fectly

On

Li

st)

are
Pr

ess
De
Tight

housing: "4

fly

whe

el

in line

engine

witho

according

perfectly

in

flywheel.

grease

4 Philips

ening torque

should

with

in

gear

ring

0x" (for 40 W equipm

be

fitted in such a

the

bor

es

in the

ut electric s

to equipm

line

with the

screws

0.9 ...

ent (40

M 6 x 10

1.1

kpm

tart

bor

for

housing.

er, f it

or

es

with

(6.5 ... 7.9

or

the flywheel

F'

& S

l.OSl..:tOS

F&

S l. OS/.:1 06

electric starter there

e nt)

and

"75x"

way

that

the bores in the fl

appropriat

75 W ) in such a

in

the flywheel.

Tri,

ft.

app

ly LOCTITE

lb.

).

e magneto

way

Fi

g.

24

Scr

ew

in fly

wheel.

Sc

rew

(1)

from

ments

tric

starter

be

removed

out fl

ywheel

Fi

g.

25

Unscr

ew

take

out

Fill a nn
resisting
support

Insert
(2)

and screw

der

head

washers
Take

retain

(4)

and

b

earing

Grease
surface

with

heat

thrust

Fit

on

bearing

into

place

Fit fly
(must e
cur

e with

Cam

and

be

free-mov

(for

that

to

out 4 recessed

in 4

hexagon

other

without

side

gear

the 4 staybolts

before)

(2).

retaining

cam

(1

).

ular

groove

grease

in flyw h

cam (1),

and
eel.

fit

tight

screws

.

ing

ring

thru

st

ring

pin.

bearing
for

pin

flyweight

-resis tin g
washer

pin,

hang

in

flyweight

weig

ht

ngage

on

with

reta

ining

fly

weight must

ing.

are

two

75 W

marking

equipme

ywheel

ho using (

the

the

see

bores

m a nd

head

screws

head

screws

(with

equip-

ring

for

elec-

must

and

press

strip

(2)

and

(3)

with

heat

grease

cam

reta

ining

with

M 4 x 5

str

3 cylin-

and

(5), flyweight

below

off

and

bearing

in flywheel

grease

.

(0.3 mm

spring

thic

(6)

.

bearing
cam)
ring

pin

and se-

(5).

always

s in th e

nt).

are

per-

Spare Parts

in th e housing

screw

th e m in .

-

ip

k)

18

Carburettor

The

type of

of tes
and

it is

No

a l
over
opened,
or

runs

or

coughing,

with d ifficult
When

spark

be

brown

po

ints

Special
as

at

e ng

ine.

to

provide

Cor

rect carburettor setting will h

t

he

engine.

carburettor,

ts in

the factory. The adjustment

therefore

teration

quie

tly

and

unevenly,

running

ing

plug

in

to

the

care

low

throttle

W ith a

not

advisable

of the

carburett

and

smoo

gives

its full

or

the

or

backfiring

starting,

with

wit

indicates

the

h t

he correct

colour. Soo

mixture
should

being

be

ins

ufficient

two-stroke engine

adequate

lubrication.

the

jet

thly

when

output

exhaust

with a blu e

correct

ty

or

too weak.

taken

size

and

determin

to

alter

or

setti ng

idling,

at

full

gas

is

black,

flame

that

the

mixture

carburettor

ther

mal

plug s

ens

value,

ure

wet

to

lubricant will

the

carburettor

elp

to

the jet

adjustm~nt

ed

in th1s

it.

should

be

made

accelerates

revs without

the

mixture

stabb

ing

is

too weak.

adjustment

the

indicate

that

the

be

, a

insula

rich mixture,

carburettor

conveyed

setting

ensure economic

are

d~termin

way

g1ves

as

long

steadily

choking.

from

clean

tor

when

)f

is

too

nch.

the

carburettor

a ir

of

the

sparking

whereas

setting

to

the

moving

should

a lways

and

trouble-free running

the

as

the

the_

the

eng1ne

Repeat

filter

and a suitable

white

is

never

ed

by

means

bes

t results,

eng

ine

throt

p~unds

ed sp1tt1n

coupled

plug

should

ins

too

parts

of

be

sufficient

turr~s

tle

IS

g

ulator

low,

the

of

Adjusting the carburettor for

When

using

the

engine

at
carburettor
s

upply

of

setting

gasoli

ne

wi ll

to

a l

be

required.

the carburettor shou

Starting

On

Tillotson

diaphragm

carburettors

itself.

The

choke

should
starting
s

Wh

richer

s
Th

the

three

tarting

en

the

fuel/air

lowly

opened

e Tillotson

HR-

18 A type

diaphragms

when the

the

choke

and a pump
drawing

the

be used
engine

cold engine.

is cl

mixture is

.

diap

hragm
have

: a

diaphragm

fuel

from

to

is

osed, a higher

obtained.

carburettor

two

contr

ol

(HD-7 A a nd HD-13 A

the

tank.

Carburettor adjustment

The

Tillot

son
adjustable
ing

points

1. To

adjust

sho

uld

2. W ith
(see

a l

3.

The

adj

(i.e.

clos

4.

The

main

carburettor

jets. If

sho

uld

the carburettor

be

thoroughly

adjustable

so

page

usting

ed)

in

jet

is

engine
be noted:

28)
screws

the jet s

warmed

jets,

car

.

marked

is the first

troubles

for the

eat,

housing.

special

climatic conditions

titudes

above

As the

the

facilitate

warm

and

starting

it

should

vacuum

Once

the

can

function

diaphragms, the

diaphragm

for

carburettor used

occur

and

correctly

for· maximum

up.

e sho uld

"H"

as

jets mu

this wi

and

be

the

taken

st nev

ll

deform

idling

1000

metres

air

density

ld

be

restricted

choke

is i

from

be

par

is

caused

engine

HD-7 A

in

has

any

type

proportioning

have

the

jets

have

not

to

er be

the

sea

jet

is

(3280 ft.),

is

reduced

by

ncorporated

cold.

It should

tially

or full

in

the

mixing

started,

position.

and

the

two

pump

for

SACHS

to

be

output

use

too

screwed

too tightly

t.

marked

adjustments

at

high

in

y c

altitudes,
the

the

carburettor

not

be

losed

changing

chamber, so

the

choke

should

The

HR-8 A

the

HD-13 A

fuel

feed

to

the

diaphragms)

engines

readjusted,

(full

load

which

the follow-

),

the engine

lean a fuel/air

to

"L"

on

the

carburettor

of

main

used

only

that

type and

type

have

engi

mixture

the

right

the
the

jet.

for
for

a

be

ne

for

has

19

Tillotson

diaphragm

carburettor

Fig.

26

l Hose

nipp

el

pump
pump

valve

et

pump

mpulse

valve

ting

jet

passage

le

body
d iaphragm
on

pump

o n

pump

gaske

r

screw

ce

Fu

2
3 Fue l
3A Inlet

diaphragm

3B

Outl

diaphragm
4 Fue l
5

Diaphragm housing ga s ke t

Control chambe

6
7 Ad ju s

idling

I

8
9 Idling jet orifi

20

t

for

l

OA Idling

lOB

By-pass

ll

Butterfly val
12 Main jet
13

Carbu

oat of corburett

14 Th r

(venturi)
15

Mai

n fu

16

Choke
17 Fuel

passage

to con

et

needle and

Inl

18
l8A

Copper

19 Adj

usting scr

outl

et

passag

passa

ve

orifice

ret

tor

ho using

el

outlet

trol chamb

sea

l

ew

e

ge

or

from pump

er
sea

t

lor main j

et

20 I

nle

t c
21 Inl e t con
22
23
24
25
26
27
28
29
30
31
32

ompr

pin

Pivot

Vent ho le

Diaphragm housing
Diaph

ragm

Air

chamber

Filte r

gas

Fu

el strai

Filt

er housing

Fue l

chamber

Pulsati

on

Fue l

filt

er

ession

tro

l l

eve

ket

ner

chamber

ho using

r

screw

H.

SI.JO

spring

1!.1

Initial

adjustment

Jet

adjustme

Close

both

of

the idli

Turn

the
butterfly
butterfly

Now

start the engine

starts up).

Final

adjustment:

nt should

jets

ng

jet again

idli

ng
valve
valve

and

open

to the

adjustment

first

lever;

then turn the

is

slightly

open

and all

see section "Tes

be

the

adj

val

screw so

.

ow

done

ust

ing

ues

given
screw

it

to

t-running

when

screw

far

back

warm

the

engi

ne is

main

urettor

is

no longer

".

cold.

jet

char

one

and the

af the

in

the

carb

that

in

the

it

again

about

up

(open the choke as soon as

eng

ine

Proceed as

adjusting scr

t (see

technical data

in contad with the

who

le

turn

, so

the

follows:

ew

that

the

engi

ne

).

Maintenance

At

certain

All ex

terior
ducts, passages
should
phragms
ponents

Checking
functioning of the

Special maintenance instructions

1.

If

pump

impulse

2. When
take

3.

The

not

be
pressure is
to

the

4. The
rectly

same leve l
the
arrow

5. The
when

just

is

flu
chamber.
should
it a little

of the carbureHor

intervals

only

before

every

dirt shou

and

ld be cl

jets must

be rinsed with

blowin

g t

(especiall y jet sea

and

cleaning the

carburettor

failure

pipeli

fitting the in

care that

occurs,

ne

for leakage

let

both

ends

compression spring

stretched, as

the

accurately

carburettor.

inlet contro

inser

diaphragm

on

inlet

sh

with the

be

l le

when

as the

ver

it

bottom

ted

chamber

illustration)

.

needle should

the

inlet

contro

bottom

If

not, the lever

adjusted

(on the

by

inlet needle

carburettor

eaned

not

gasoline

hrough).

ts

and

fuel filt

always

control lever

of

the

must

spring

adjuste

is

cor

is

at

the

(see

close
l lever
of

the

bending

side).
Wh

en

re

tto

r,

assembling the

make sure that

6.
diaphragm,

of

th e

housing are

in

serted
ring
fuel
body
the

to

pins ; si

diaphragm and fuel

are

adjusted

same

gasket
the

east

milarly,

kind

and

casting

carefully

-on

the

gasket

by

means

of

centering

carbu-

main

in-

cente-

pump

of

pins.

The

gaskets at

phragms
positioned
diaphragm

carburettor

are

on

in

that side

which

housing.

both

eac

h case

faces t

dia-

of the

he

must

off

with

be

cleaned with

and

Befor

diaphragms)

er

and longer

check

and

blockage.

and the compression spri

spring

d

-

of

Fig.

27

,

be

disassembled, cl

gaso

line

before

hard

clea

ned

objects (e. g.

wit

h compressed

e assembly, check

are

in

proper

in

good time helps

eng

ine service

(before

are bedded

removing

in

the

eaned

and

overhauled.

disamssembly. The holes,

wire

or

drill),

air

(remove

all

car

burettor

ing

order.

achieve

satisfactory

diaphrag

ng

(see illustration),

s.

F"&St..

lif

e.

the

spri

that

work

to

pump

ng seat

m)

J(L151

but

dia-

com-

the

21

Fi

g.

32

12 V 40 W

equipment

rs.s

t..on:20

Fi

g.

33

12 V 75 W equipme

(with ext

erna

l ignition coil)

nt

Should

Fig.

Note

With the
and

Connect
respectively,

Scr

Not

Fit a lso

the

breaker cont

34

pole shoe

acts

:

12 V 75 W

short-circuiting lead

earth wire

with left-hand

ew

fan

hou

e :

cover

Secure cover (1
(only

with
3 fillister he
the re is a

40 W

ad

baff

in th e

sing

tight

fla n

ge

, Fig. 34),

equipment)

screws

le

plate,

gap

be

incorr

range of

equ

ipment, connect

ect,

0.4 ± 0.05 mm (0.016 ± 0.002 in.

F&SL..07S:22

from short-circuiting butt

(brow

n) with rig

carbur

wit

h 4

for electric s

ignition

and

M 6 x

10

do

not

yet

ht-hand

ettor

nut

s M 8, 2

tart

er

lead

earth

a nd

spring washers. (If

secure

it c

an

be

corr

Fan

Fig.

In
the
housing

Pass
from
th e

Connect lead
as

Connect
terminal

Connect short
(black) f

ton

to ter

primary

lead (blu
on

to

carburettor

from support of

nut

s M 6

and

connection,
with r

wi re (only

cover

if

ubbe

r sl

with

on exhaust

ected

by

slightly adju

).

housing

34

sert

the

and

two

housing

.

insulating tube (5)

ins i

de

through

housing.

follows:

lighting lead
1 a nd 2.

rom short-circuiting

and

from

minal

3.

e)

from

terminal

3.

from cover

Bowde n

spri

there

eeve

right

on

cabl

ng

washers.

is one.
(1, Fig.

-ha nd

SACHS SA 340

side.)

cover

dowel tube

and

fit

the bore in

to

scre

w terminal

(yellow)

-circuiti ng

dyn

amo

dynamo

or

baffle plate

e,

Ia ter

5)

and

fixing clip

carburettor

and

sting

the

s i

nto

the fan

with l

ead

lead

but-

magneto

magneto

min a l 4.

) with

SA 370

to

.
'

26

Fan, starter hub

Place

faf\ (1, Fig.
washers.
Torque

0.5 .

..

0.6 kpm (3.6

Insert

two

cyli

ndrical

Place

starter

retaining

M

14

X 1.5.

Torque
Secure

lever

9.0

...

9.5 kpm (65.1

recoil

hub

starter

and

recoil starter

2)

with

gasket

..

.4.3 ft. lb.).

pins 4

(2, Fig.

(3,

Fig.

2)

2)

...

with 6 nuts M 6

in

position

dia.

x 15

in

position

and

secure

68.7 ft. lb.).
and

and

and

fit

spacer.

and

starter

spring

secure

fit

washer

hub

washers.

it with 4 nuts M 6

and

tab

with hexa

washer.

gon

and

Hold

nut (with

spring

it

with

collar

)

Electric starter, carburettor

Screw

on
Conn"ect
Place on

(hard

cloth

flange

rburettor

co
Fit

intake

Exhaust

Screw

on

If

there
manifold
plate

with 1

with

earth

electric

impulse

both

(1,

muffler

exhaust

is a

respectively

insulating

side

Fig.

1)

H D 13

silencer

and

baffle

cylinder

lead

(in

starter

with

pipe

(4,

Fig.

bush

towards

wit

h 2 self-locking nuts M 6 (for

A)

respectively.

(3, Fig.

baffle

muffler

plate

on

on

the

head

case

of

and

intake silencer

two

nuts M 8

1)

to

connection

es,

insulating

carburettor)

1)

and

secure

plate

or

manifold

SACHS SA 340

right-hand

screw

M 8 x 12.5

right-hand

and

on

flang

and

screw

it.

and

bracket

and

stud

screw

to

nut

carburettor)

spring washers.

crankcase.

e,

carburettor

carburettor

carburettor

respectively.

SA 370,

with a

and

and

screw

nut

1 cylind

cover

and

both

firmly

into

HR

18

A)

tight

exhaust

M 8 x 22.5.

er

head

to

fan

shroud.

fibre

place

and

Screw

screw

washers

on

M 8 (for

muffler

baffle

M 6 x 10

the

or

27

TEST-RUNNING AND RUNNING-IN
THE

Test-running

Start the engine

Final adjustment

Then
speed

slight
under load,
engine

screw
witho

ENGINE

Adjust

the

desired idling

slowly

vary

inc

fumes

runs satis

the idlin

anti-clockwis

ut

beginning

reases

are

turn

g speed

justed when the

If

and

let

it

warm

speed

the setting of
smoothly
eng

disc

main jet

factorily

to

ine gives

har

ged

.

fluctuat

e (to

open

discharge

when

adj

up

(open the

of

the

engine

the

adjusti

ottle
ry

screw cl

much

until

smoke

ng

or

the thr

satisfacto

from the exhau st.

ust

ing

es too

th e jet)

more

choke as soon as the

by

means

screw

of

is

opened.

two-stroke

If there

ockwise (clo

is

too

high

the engine

from

th e

of

the

the

idli

The

operatio

es

sing) until

, turn the
runs s

exhau

st.

idling

adjustment

ng jet

so

main

jet

n und

excessive

smok

idling

moothly

engine

that
is

correct

er

load

exhaust

ing stops

jet

at lower

starts up).

screw.

the

eng

ly

ad-

and

only

smoke

and

adjusting

speed

ine

Running-in

Even

the

surfaces

reason
does
should

hours.

No
quently

of

every pi

not

not

special

there

period

finely

machined

parts

ston requires

call

for

be r

equired

gasoline/oil

is

no

which
any

need to

hav

speci

to

mixture

surfaces

e been

al

give

add

of

pistons

sliding

to

be

run in

precautions, howev

its max

imum

is

required

any special oils.

again
duri

during

and

st one

ng the

er, but

output

cylinders

another

initial

simply

during

the

running-in

are

not

for

period

mea

the

so s

moot

some time.

of

operation.

ns

that

first

20 ... 30 run

period,

h as the

the

and

For

eng

ning

conse-

this

This

ine

28

ENGINE WITH
STARTER

Fig.

35

To

remove

(1)

M 8

with

The

pinion
armature
unt

il

it

engages
gagement
mecha

nically

ves

and

the

ngag

ed. Even

e
spring

is

spring-connected

movement;

its
soon

as

it

the

and

the armature,

starter,

spring

of

the

shaft

of

the

operat

pinion

pinion

(Type

unscrew

washers.

solenoid-control

and

with it. The

pinion,

screws itself

if

tooth

when

runs

BOSCH

DD)

2 nuts

is

first

pressed

lever

the

rters by

on

tooth engag

to

up

aga·in

the

engine

swit

the

ed sta

starting, the

and

SOLENOID-CONTROLLED

Fi

g.

35

led

starter

up

against

is

electro-magne

ch

mounted

means

further

guide

st i

of

forward

eme

ring

armature

ts

counterpart, firm

is

being

(Fig. 35) slides

the

gear

tically operated. Shortly

on the

the

engaging

on

nt

occurs,

and the l

turns the

start

ed.

rim
starter
the

coa

the

ever

pinion

contact

on a coarse

by

mea

automatically

lever-

the

rse

thread until

switch w

is

ther

efore

until

is

established

thread

ns

of

a shi

armature

ill

close, as the

not

it

can

on

ft

after

closes -

revol-

it is

hindered

engage.

between

the

lever

en-

on

ful

ly

in

As

If, after
from
gear rim

To e
to
the commutator bearing

starting, the

the

armature shaft

until

nable

the

enable a new

starter

eng

the

enga·ging lever

to

sta·

rt

to

ine

by

an overr

come
be

made

of

the

begins to

unning roll

is ret

to

rest as

shortly

starter

ove

rtake the

urned

soon

afterwards,

.

to

as

er

clutch,

its

possib

starter,

initial

le

an

armature

the

pin

ion is

but

remains engaged with the

position

after

by

bei

ng switched

brake

a re

is

uncoupled

turn

installed

spring.

off,

and

on

29

ENGINE WITH
STARTER

Fi

g.

36

pinion

The
armatur

is
inertia
and
s

If, aft
from the armat
pressure

e sh

not

engaged. When th

of

engage

haft the

er

starting,

(Type DG)

of the

aft.

In rest

the

pinion res

with

drive beco

ure s

into

rest

inertia-pinion

the

mes

the engine begins

position

BOSCH

positi

ult

gear rim. When

haft

type

on the

e s

tarter
in a force whi

positive

by

.

and

an

overrunning

INERTIA-PINION TYPE

Fig.

36

To

starter (Fig.

gear

is he

is

operated,

the

the engine

to

overtake the

ld

back

the

ch caus

pinion

has reached the

is

rol

ler clu tch

remove

(l)

M 8

36)

slid
by

acceleration of

es

the pinion

turn

ed

starter, the

with

es

on a

spri

ng tension

by

the

and

sta

to

is s

rter, unscr

spring

coarse thread

the

run a l

stop

starter.

pinion

pun ba·ck

washers.

and

starter

ong

on

the

is

ew

the pin

arma

uncoup

by

2 nuts

on the

and the

the

sha

ture

spr

ion

ft

led
ing

Note:

On

subsequent

wit

h steel

30

rim

insta

(F

& S Part

llati

on

of

No. 1471

an

iner

tia-pi

007 000)

nion

can

typ

e st

arter

be used.

, only

the magneto

housing

Operation, maintenance and lubrication of electric starters

Operating

Do
fare
recover.
attempt.

Should

starter
caused

If

the
serve
sought

Maintenance

Danger

of the
work,

battery!

Carbon

The
the
cap

Fig. 3
brush
bend spring
carbon

The c
these
rag (not

Do
brushes. Blow
so

worn
aga
brushes.) When fitting the carbon brushes,
not

When
taken to

glued

instructions

not

leave

the

star

swi

tching

If

the

Let

go

the

system

until

the

to

pin

eng

ine does n

no

purpose

and

remedied

of

short

built

-in

that the

brushes

condition

retain

ing

(3,

Fig. 36)

6)

of

the inertia-pinion

on

to

the

to

brushes ca n easily be

arbon brushes

parts

are

with

was

not sandpaper, file

that

inst
strike

the

the

brush

aga

fitting

ensure

into

the strap should

ter switched

on

again, wait

re is a

grati

the s

tarter

not

engi

ne

ion

and

gear

ot

and

(check

circuits arises

starter.

eart

h l

ead

of

the

carbon

strap

(2,

and taking

commutator

one si

de

and

dirty

or

te

woo

out

the

spring

hold

inst the brush.

the

cover stra

that

the

on

1 m

ng

as soon as the

be

or

start after
wil

l on

It

is

be

Fig.

and not

brush holders must

jam,

l, as this

or

brush holders

or
er,

locking

inute to

of

teeth,

switch o

provided with

the

pinion

rim.

some

ly

lead

the

therefore

disco

brushes sho uld

35)
out

typ

should

use knives

the sol

then

p (2, Fig. 35)
closely fit

to

fuel

supply

when

work

strong

nnected

of

the sole

the

fuse, the com

e starter, the

be

to

raise

moved

in

they should be

easily

well. If a carbon
dered-i
it should

clasp lies

longer

have

starti

exhaustion

raised, preferably

their

sheds

on

eve

than

10 seconds with

allow

the

ff

engi

a st

come

ng

in

is

ly

fro

noi

it longer

guides

the

n s

trand

be

care should

of

the sli

on

rywher

starter

starter

ne runs
arter

particular

carried

recommended,
m the

be

d-control

spring

be
cleaned with a clean

fibres)

immedi

under

safety

to

rest, as otherwise

atte

mpts,

further

of

the batt

).

out

on the e

batter

y.

checked

kept

bright gr

replaced. (Use only BOSCH carbon

the mid

e.

periodically.

led

pensati

ng

which

with a hook

than

necessary). Now check

in the brush

free of

and well

ound surface

brush

in

the bru

be

ding pinion

dle

out int

to

cool

ately

its

own power

device,

neve

starting

ery. The

lectrica

before

Do not

starter

was

hers

pre

sses

holder

dust,

dried.

is

broken,

sh

is

in da·

tak

en

that the

starter

of a web;

and

and

carrymg

place

or

screwi

the

relevant

(take

oil

gasoline-damped

, care sho

the

erruptio
the

repeat

r switch

damage

fault

l _

After removing

and

.

and

of

unsoldered

nger

n. Be-

battery

starting

.

on

the

will be

attempts will

shou

ld

components

out

ng

the

care

that the

grease.

the

of

striking

spring

such

on the

off

the

cap

carbon

not

carbon

does

uld

strip

tools

sealing

to

be

(2,

to

If

or

be

31

When

fitting

to

ensure
bon
fuse

The
general

Commutator

The

oil
rag
and

commutator

a

Lubrication

Both
bush) .

To
cally

BOSCH-grease

that

brushes

and

carbon

commutator

and

(not with
eccentri

increase

are

screw

brushes

overhaul.

grease.

c must

bearings

These bearings

their

with a brush

the

cap

(2,

the

on

Soiled

waste

be

of

Ft 1 v 13).

Fig. 36)

armature

in

close

cap

should

wool)

be

worked

the

service life, the pinion

dipped

shaft

contact

(3,

Fig. 36).

should

at

have

commutators

and

re-turned

on

with

starter

must

not

in

If

necessary,

of

the

inertia

is

seated

with

the

all

events

an

even, grey

should

well

dried.

in a

suitably

sandpa

per

are provided

be

greased

gasoline

and

and

remove

pinion

corr

commutator

be

-black

be

Commutators

with a· self-lub r

or

type

ectly

renewed

surface, and

cleaned

equipped

or

a file.

treated

the

gear

then

re-greased

burrs

from

starter,

care

in

the

housing

. Fit

compensating

when

with a

clean

which

works

hop. By

icating

with grease-dissolving

rim

should

gear

should

and

the

engine

must

be free

gasoline-damped

have become

no

bearing

be

cleaned

(graphite

rim

and

pinion.

that
washers

means

grease,

be

take

the

is

give

of

sco
sho

(Campo-

cleaners

period

n

car-

and

n a

dust,

red

uld

.

i-

e. g.

32

Starter

When

fau

the

with

points,
actual

starter

A.

When

armature

the
or

only

1.

Battery

2.

Battery

Battery

3.
earth

Start

4.
g

round

5.

Carbon
lie

on

in

their

oil-smeared

6.

Starter
so

tha

Ma

gnetic

7.
(only
ter).

oss

8. L
l

eads

loose.

B.

Armature

engage:

not

1. Pinion

2. Burr

faults

lts

arise

it

starter

but

also

the

slowly:

exhausted.

defe

terminals

connection

er

brushes

contact.

brushes

the

guides,

switch da·

t switch

with sol

of

current

damaged, lead

soiled.

on

pinion

should

itself,

nor

in

the

fuel

system.

ignition

is

switched on,

shaft does not rotate,

ctive.

loose,

poor

or

terminals

of

the

commutator,

are

or

soiled.

maged

is

not

of

on,

starter

switch

enoid-controlled

in

leads

rotates, but pinion does

or

gear

be

borne

in

the

supply. The

oxidized,

.

have

starter

do

are

jammed

worn,

broken,

(parts loose,

burnt out).

damaged

too

connections

rim.

in

mind

poor

that

electrical connection

following

C.

1.

2. P

3.

not

4. Loss

D.

1. S

star-

great,

E.

1. Pinion

their

cause

need

not

the

vehicle

are

is

brushes

necessarily
limi

ted

switched on,

charged.

remed

of

ial hints

When

the ignition
the starter
pinion connects, then stops:

Battery

ressure

armature rotate

insufficiently

of carbon
cient.
Magnetic
sole
order.

Starter keeps running
released:

tarter
magnetic
con

Pin

engine starts:

soiled

weak

switch

noid

-cont

of

current

switch

switch (only with

trolled

starter)

ion does

or

flywheel

or

damaged;

or

broken.

of

rol l

ed

in

does

not

disengage

starter

starter) not

leads

too

after

not

switch

sticks.

toothing

return

lie

earthi

ng

to

the

s until the

insuffi-

(only with

in

great

.

switch

off

or

solenoid-

afte

r

badly

spring

is

33

INSTRUCTIONS
FOR

DYNAMO

AND

WIRING DIAGRAM

MAGNETO

12

V 40 W

The dynamo
at

12 Volt.

nl

y o ne

O

The

second

up a rectif
The

bulbs

as

otherwise

Care should
sis

to

F

ig.

37

As = load

Bs = Short-circuiting

Bs = light switch

= Dyn

C

C2 = Dynamo

(,

= Ign ition armature

magneto generate

of

the yell

yellow lighting

ier

to

shou

the bulbs

be taken

the lamps.

(12

V 40

amo

magneto

armature

ld

ow

lighting l

lead

charge a battery

be

so sel

ected that

may fuse

to

ens u

re a good

W)

switch

s a lt

ernating

eads

remains

should

blind

current

be

co nnected

and

with a·

may

lighting

up

be

used later

power

(see wiri

of

ng

diagram)

for

connecting

40

. .

the

total load

of

the

dynamo

magneto

is

40

.

earth

connection

c,

(,,

Cn

c,.

c,.

=

Sparking plug

= T

erminal carrie r

=

li

ghting

=

Additional

=

Short

·circui

from

lead

the e

(yellow)

eart

h l

ting lea

ngine

ead

(brown

d (b lack)

via the

F&SI..05r..S

)

Watt

.

Watt,

chas-

812

34

INSTRUCTIONS
FOR

The
at

Only

The second

up a rectifier

The

For
Care

chassis

DYNAMO

dynamo

12

Volt

.

one

of

bulbs

should

reaching

shou ld be

to

the

mag

the

yellow

ye

llow

to

charge a battery

the

lamps.

,-----

MAGNETO 12 V

neto

generates

leads shou

lighting lead

be

so se

lect

75

Watt

taken

to

~Xltl~----'

i

I

I

I

I

ll

AND

a resista·nce

ensure a

WIRING DIAGRAM

alternating

ld

rem

.

ed

that

be

connected

ains blind

the

total

of

25

Watt

good

earth

75

W

current

with a

lighting

up

(see

wiring

and

may be used

load

of

the

dynamo

must be

connection

added.

,..---

1

·

"Cla

I"IU---T"-

from

power of

diagram

lat

er

magneto

the

engine v

).

for

connecting

is 50

75

Watt

Watt

ia

.

the

' Fig.

38

Aa

= Load

Ao = Resislance (

810

C

C2

( 6 I

Switching

0 =

I =

II

Il

l = Intended

(12 V 50

Ignition light switch

Dynamo

magne

Dynamo

gnit

ion armatu re

positions

Off (Ignition
Night

opera

=

Day operatio

W)

12 V 25

to

armatu re

:

short-circuit

tion

n

for

star

Co

= I

W)

ed)

tin

g

gnition coil (lying

(,

=

Sparking

(H.

= Terminal c

Cn = L

ighting lead

(,. =

Additional

(,

= Short-c ircuiting l

plug

arri

er

(yellow)

earth lead

ead

outside)

(bro

(black)

wn)

35

INSTRUCTIONS

12

V 40 W AND BOSCH SOLENOID-CONTRO

STARTER (Type

The dynamo
at

12 Volt.

two

The
12 Volt 38 (or
wiring
The bulbs
Care should
good

yellow

diagram)

should

earth

magneto

lighting

32)
.

be

be

taken

connection

Ah

so

battery

to

AND

DD)

generates

leads

for

selected

ensure

between

WIRING DIAGRAM

alternating

are

to

lighting

that

they

proper wire

battery,

be

connected

and

give a total

chassis

curr

ent

with a lighting

up

for

operating

load

cross sections

and

lamp

to

the

of

for

s.

rectifier

the

electric

40

Watt

starter

LLED

power

for

starter

.

operation

of

40

charg

Watt
ing a

(see

and

a

Fig.

39

Aa

= L

oad

(12 V

40

ag

neto

armatur

plug

positions

W)

Ba = Li

ght switch

811

= Starter switch

= Dynamo m

C

C2 = Dynamo armature

c, = I

gnition

(,.

=

Sparking

C11

Batt

ery

Sw

itching

L__-t-

___

j

sa

(,.

= Terminal ca

Cu

= Lighting le

c,.

=

Additio

c,

= Short-c

e

:

= Electric st

E
G

= Rectifier

= Fuse

S

0 =

I

=

=

II

Off (Ignition shor
Start
Lights

rri

ad

nal

ear

ir

cuiting le

ar

ter

(4

Amp

s)

(by means

er
(yellow)

th le

ad

ad

t-circ

of

starter switch)

(brawn)

(black)

uit

ed)

36

INSTRUCTIONS
FOR

DYNAMO

AND

WIRING DIAGRAM

MAGNETO

12 V 75 W AND

SOLENOID-CONTROLLED STARTER (Type

The
at
The
12 Volt 38 (
wir

During
nected

The bulbs

Care
a

good

I

I

I

I

I

I

I

I

I

dynamo

12 Volt.

two

ing

yel l

or

diagram).

day

operation,

up,

during

should

should

earth

magneto

ow

lighting

32) Ah

night

be

be

taken

connection

generates

leads

battery for

because
operation

so

selected

to

ensure

between

alternating curre

are

to

be

connecte

lighting

of

both

that

proper

battery,

and

overcharging

circuits

they

give a total

wire cross

cha

nt with a l
d up

for

the

are

ssis

and

to

operating

battery,

connected

load

sections for

lamps.

li

BOSCH

DD)

ight

ing

power

of

75

the

rectifier

the
only

up.

of

50

I

---+--J_ ) __

I I

electric

one circuit

Watt

starter

][

for

charging

starter

.

operation

BlQ

Watt

is

a

(see

con-

and

~,

en

---+---

,1~~----1

L

______

Fig.

40

Aa

= Load

810

C

C2

C6

c,

C10

(.,

c,6

Cn = Lighting lead (yellow)

c.,
c.,
c,

(12 V 50

= Igni

tion

= Dynamo magneto

= D

ynamo

= Ignition armature

= I

gnition

= Spa rking plug
= Battery

= Termin

=

Additional

= Sho

rt

-circuiting lead (black)

=

Ignitio

_

W)

light

switch

armature

coil

(lying outsid

al

carrier

earth lead (brown)

n lead (blue)

...

2

5mm

E = Electric starter
G
S = F

Sw

= Rectifi

i·tching posi

0 =

I = Night

II

III

16

e)

use

Off

=

Day

= Start

er

(4 Amps)

tions

:

(Ign

ition

operat

operation

(e

lectric)

short-circuit

ion

F&St.051. : 9S

ed)

37

INSTRUCTIONS AND WIRING DIAGRAM
FOR
INERTIA PINION TYPE STARTER

Th
at

The
12 Volt 38 (or 32)
wiring

Du
nect

Th
Car

good

DYNAMO

e dyn

amo ma·

12

Volt.

two

diagram

ring

day operat

ed

up, duri

e bul bs should be so selected

e should be

earth

yellow

ng night ope

connection

gne

lighting

).

tak

MAGNETO

to ge ne

rates al

leads

Ah

battery

ion,

because

en

to

ensure

between

ration both circuits a re

are

for

of over

that

proper

battery

tern

ating

to

be

lighting

charging

they give a

wire
, chassis

12 V 75

current with a lighting power

connected

and

cro

W AND BOSCH

(Type

DG)

up

to the

for

operat

the

bat

conn

total

load

ss sections

and

lamps.

rectifier for cha r

ing

the

tery, only

ected up.

of

50

for

start

,-------..

I

I

i

I

I

I

of 75

electric star

one circuit is con-

Watt

.

er ope

ration and

ging

ter

Wat

(see

t

a

a

lJ_

Fi

g.

41

As

= L

oad

(12

V 50

B,

= Ignition li

C = Dynamo magn eto

Cz

==

Dynamo

c,

= Ig

nition

c,

= Ignition

c,

= Spa rking p

c,

= Battery

C16

= Te

Cn

c,.

Ca

c,

E
E,

G = R
S

38

rminal

= Lighting l

= Additional

= Short-circuiting le

= Ignition le

=

El

ectric

=

Start

ect

ifier

= Fu

se

Switching

0 =

Off

I

= Night

I I = Day

Ill =

Start

positions

(Ignition short-circuited)

ght

arma

armature
co

il

lu

carrier

ead

earth

ad

start

er rel

ay

(4

Amps)

:

operation

operation

(electric)

W)

swi

tur

(lying outside)
g

(yellow)

(blue)

er

tch

e

(primary)

lead

(brown)

ad

(black)

E

1"

8 5 1.071 ; 1..5/2

LAYING-UP THE ENGINE

If

the

engine

is

not

used

rusting.

1. Mix
the
as

supplied

After
speed
should
cautions
ago i nst

2. To

protect
the
through
sta

rter

3. To

protect

used

for

If

the engine
gasoline
mixing

In

such

the

fuel with a

engine

the

last

by

means

be

kept

will

corrosion.

sparking

the

and

as

supplied

example:

is laid

and

oil in

the

two

cases

on

by

run

adequately

the

sparking

screw

the e

Anticorit
Lubrication

Shell ENSIS Fluid 260

RUST

constituents

for a fairly

the

following

running

this

mixture for a short

leading

closed.

cylinder

plug

oil

before

of

the

short-circuiting

When

and

and

plug

in

the

spark

ngine exte

by

the

leading

MR 5 supp

BAN 395 s

up

for

more

the

fuel

anew

laying-up,

protect the

pour

Oil

mixture

precautions

-in

and

companies

the

engine

the

piston,

3 ... 5

hole.

Then

plug

rnally

, it is recommen

oil

lied

MIL-L-644 B

upplied

than

six

may

by

stirring,

long

time (e.

anti-corrosion

time.

(e.

g.

ENSIS O il 30

the

engine

button,

has

crankshaft,

place

cc (0.106

turn

the

.

companies;

by

Mes

supplied

supplied

by

ESSO

month

s with fuel in

occur. In

or

g.

in

should

Use

stopped,

the

srs. FUCHS, 68

by

tha't

summer),

be

oil in 25 : 1

oils

with a viscosity

should

be

while

the

close

connecting

pist

on

...

0.176 fl. oz.)

engine

15

ded

by

MOBIL OIL

SHELL

such

cases

they

taken

at

...

that

the

be

there

to

protect the engine

proportion

available

stopped
choke

on

the

fuel

rod

and

top

dead
of

anti-cor

20 tim

es

anti-corrosion

Mannheim

tank,

separation

we

strongly

replac

ed.

is a

danger

and

grade

from SHELL)

at

full ope

the carbure

tap.

These

main

beari

cent

er,

unscrew

rosio

by

means

, G

erma

recommend

SAE

rating

pre-

n oil

of

oils

of

run

30

.

ttor
ngs

the

be

ny

the

of

:

39

LUBRICATION AND

Mainte

nanc

nd

oil starter

on solenoid­on

inertia-pinion

e st

art

er

on magne

e o r

point

star

and toot

lubrication

Carbureltor

Ignition system

Engine a

exhaust muffler

R

ec

Pinion
controlled
pinion

typ

rim

to

ter,

flywh

hed

eel

lubricant,
maintenance operati

Intake

Remove intake silencer, clean in gasoline and
blow

Spa
A
ca

between the electrodes. An efficient clea ning can

only

Functiona I check

U

spa

he
good
el

(0.020 in.),

-C-Ie_a_n_a_n_d_a_d_ju_s_t __

-~(i;;c

Apply

lubricator

Decarboni

Smear
the

lubri

ly with SAE

Clean
grease

----

---

MA

INTENANCE CHART

ons

silencer

out with compressed a ir.

rk

plug

provisional

rbon

be

nscr

rk

ad)

ectrodes.

resid

achieved

ew

plug

and

ord

spark

operate

er,

see

clea

ning

ue

can

be

made

by

means

plug,

lit spark

thread

in

starter.

a strong

spark

Gap

between electrodes

arrow.

of the

on

of a sandblast

ground

II

must flash

-------------------------+~--+~--~~--~

k

and

, if n

ecessary,

BOSCH Ft 1 v 4

far

contact

ze

(see

coil

spring

4 oil

grooves

cant.

Lubricate sta r

10

oil.

with

gasoline

(e.

g.

BOSCH special

adjust

special grea

breaker

page

22).

with Ae ro SHELL

in

the

pulley with the

ter cord

and lubricat

----------------

spark

plug

the

insulator loot

plug termina l,

contact

the

spark

plug

across

contact breaker.

se

cam

.

grease

and

paw

e with

grease

Ft

1 v

from

unit.

put

(cylinder

is in

the

0.5 mm

to

felt

14.

Fil

same

ls ligh

grap

hite

13)

.

Mai

ntenance

time

schedule

~

""0

::>

::>

e

~

0
0

"'

w

0

<':'

Q)

>

CJ

e

.r.

3:

>-

::>

::0

E

~

c

0

"

0

0

~

0
0

2::

<':'

Q)

0

>

w

0

X

X

I

~X-->1

~~

~~ X ~~X-

~~

_~

__

1

lll

xl-1

l

!·

l_l_ll

:---+--l-+----'---1

___

l

~

I I I

X

I I I

c

1

Cylinder, conn e
rod

bear

bearings

40

ing

cting

s,

crankshaft

By

two-stroke mixture, i. e. commercial

des

SAE

40

or

50
correspond
MIL-L 2104

line mixed
Special
which is

to

A)

with

at a ratio

Motor

available

of leading ail

the AP I cl

commercial

of

Oil

(F

& S

in

cans

assification

1 : 25.

Part No. 0263 005 100)

.

compa

brands

Or

HD

gra-

nies (which

MS

and

of

gaso-

use

SACHS

TIGHTENING TORQUES FOR BOLTS

Bolts

AND

NUTS

F & S-N

o.

--

0940120

1440 039

11940 1 07 000

1440 038

0240 056

Nuts

I

1942

0242 009 000

0316

1442 005

F &

200 4

001

001

001

S-No.

001

000 4

057100

001

Qty.

I

I

Magneto
housing

4

Crankcase

2

Crankc

4

Cylind

3

Armature

~

~~

-

_I

Cylinder

4

Cylinder

4

Fan

Crankshaft,

-

U

ring in

ase

er

head

base plate

Used

sed

on

on

magneto

magneto

side

Dimension

I

M6x10

M8x80

M8x60

M8x60

M5x

Dimension

M10
(SW14)

M
(

SW1

M 6

M 1

10

4x1.5

I

( 6.5

{17.4 ... 18.8 ft. lb.)

(17.4

(23.9 .. . 25.3 ft. lb.)

12

( 2.9 ... 3.6 ft. lb.)

(33.3 ... 34.7 ft. lb.)

7)

(14.4 ... 15 .9 ft. lb

( 3.6

(65.1

Tightening

Torque

--

0.9 ...

1.1

kpm

...

8.0 ft. lb.)

2.4

...

2.6

kpm

2.4 ... 2.6 kpm
..

. 18.8 ft. lb.)

3.3 ... 3.5 kpm

0.4

...

0.5

kpm

Tightening Torq

4.6

...

4.8 kpm

2.0

...

2.2 k

pm

0.5. .. 0.6 kpm
...

4.3 ft. I b.)

9.0

...

9.5 kpm

...

68.7 ft. lb.)

ue

.)

SW

14 = 14

SW

17 = 17 mm (0.669 in.)

mm (0.

551 in.)

acro

ss

flats

across flats

41

~

REPAIR

SACHS

I Cyli

nder

DIMENSIONS

SA340

assy No . Standard 24

Cylinder dia.

1 Piston assy. No. I 1486 036

mm

+ 0.049

75.5 + 0.

----

005

87

025 000

in

s. + 0.00193 I

2.9724 + 0.00118

030

--------------

j lsi r

mm

+ 0.049

76

+ 0.030 2.9913 + 0.00118 76

I 1

486

036

ebore 1487 0

006

25

00

1 I 2nd

in

s. + 0.00193 I

rebor

e 14

mm

+ 0.049 ins. + 0.

.5

+ 0.030 3.

14

86 036

007

87

025 002 I

0118

00193

+ 0.00118

Punched
dimensio n

Piston ring No.

I . . I

Ptston ptn No.
Connecting rod

bush No.

SACHS

Cylinder assy. N

Cylinder dia.

Piston assy. No.

I I I

Punched in
dimension

L-Pisto
P
Piston pin No.

Connecting ro d
bush No.

in

SA

340

n ring No.

is

ton ring No.

I I

75

·5 mm

1415

006

ooo

14

16 004

ooo

1432

028 0

01

Bore

22

mm

SS

(cylinde r with Ni-Resist liner)

o.

S

tanda

mm + 0.049

75.5 +

1486 036

75.5

mm

1415007005

----

141

5006020

- -

--

1416

004 000

432 028 001

1

0.030

025

rd

1487

B

ore

025

ins. + 0.001

2.9724 + o

22

76

mm

I

14

15

006 001 1

53

I

,

1

0.86614in

mm

76

___ __

14

86

036 026

76

mm

141

5007006

14

15006021

0

.86

614

~·~:~~~

015 1 sf r

.ooo78

+ 0.020

mm

_ 0.030

+0.00078

· - 0.

eb

+ 0.039
+ 0.020

in

+ 0.00078

.

-0.00118

ore

001

18

1487 025

2.

9913

ream to

016

ins. + 0.0

+ 0.00078

ream to

22

mm

01

53

1

22 mm+ 0.030

76

.5

mm

415

006 002

+ 0.050

+ 0.

03

0

2nd

mm

+ 0. 039

76.5 + 0.020

14

86 036

76

.5

mm

1415

007

1415

006

+ 0.050

0

.866

rebare 1487

027

007
022

0

.866

14

in

+ 0.00196

-0

.00118

.

025

017

+ 0

. - 0

.00
.0011

53

196

ins. + 0.001

3.0118 + 0.00078

14

in

8

I

1

SAC

HS

SA

Cyli

nder

a ssy

Cylinder dia.

370

Na.

Standa

I

m

~

rd 1487 020 0

+ 0.049
+ 0.030 . + 0.

;n~2

3 1

00

+ 0.

I

I

00

193

00

11

8 . + 0.030

~n~

7

1st r

ebo

+ 0.049

re 1487 020

3.1299 + 0.00

001

ins.

+ 0.00193

I

I

11

8

2nd

rebore

m; + 0.049

- 0.030

1487 025

002

ins.

3.1496 + 0.

+ 0.00193

00

118

Piston

Punched

dimens ion

Pis
Piston pin No.

Connecting rod
bush No.

t;

assy

. No.

in

ton ring No.

1486 032 005

I

79

I

1415 003 100

I

I

1

416

1432 028 001

L

--

mm

002 000

---

1486 032 006

I

79.5

mm

I

I

1415 003

I

Bor

e 22

-

mm

+

-0

0·020

.030

o.86614

001

in . .:::.

~:~~m

ream to

22

mm

1486 032 007

80mm

141500

3002

0·050

+

+ 0.030

0.86614

in . .:::_

~:gg~jg

I

!

!

ENGINE FAULTS

A

number

A. Engine refuse to start

a) Plug not sparking, because

1. Plug

2. Exterior

3.

4.

5.

6. I

b)

1.

2. Fuel cock

3. Fuel

4.

5. J

c)

1.

2.

Water

3.

d)

1.

2.

3. Ve

4.

B.

a)

1.

2. Exhaust

3.

4.

5.

b)

C.

a) Engine

1. Igniti

2.

3.

of

possible

oiled

faults

up, damp,

are

shorted

damaged,

of

plug

Igniti

on

lead
Short-circuit
leads from
Breaker
burnt

gnition

contacts

,

armature

wet,

loose

button

engine

or

jams,

are

oiled

or

broken,

or

damaged,

up,

condense

damaged.

No

fuel reaching engine, because

No

fuel

in

tank,

closed,

strainer

Fuel line

ets

clogged.

Fuel mixture not ignitable, because

Carburettor
Infiltrated

carburettor

Lack

of

Piston rings
Piston and cylinde r

nt

cock on

Cylinder head

Engine lacks

Due

to

Intake
cylinder

Th

ick c

clogg

ed,

blocked,

flooded,

in

carburettor

air

due

to

,

loose

.

compression, because

broken,

worn,

cran

kcase open,

or

spark

plug

power

dir

ty components, because

silencer

arbon

and

transfer

clogged

depo

soiled,

with

sit in cylind

ports

carbon

head,
Fuel

tank

gets

no

air

(fi

of

ller

compr

essio

Spark

plug

Due to lack

(see

under

vitrified.

of

compression, because

"Lack

because").

Other

Engine
carburettor interrupts
Contact
fu

engine faults

runs

on lead

overheats;

breaker

sed,

unevenly, because

loose

or

damaged,

fuel

vapor

fuel

points

supply

oiled

listed

or

damp

loo

in

.

er

cap),

lock

up

r

se.

n,

below,

or

in

,

or

together

4. Locating pin

5.

b)

1.

2.

3. Exhaust d u

4.

with likely

arm

worn,
Spark plug
or

ignition

Engine four-strokes
reach speed, because

causes.

for

contact

or spark

armature not

Choke closed,

Carbu

ret

tor

or

damaged

Carburettor

floods

inlet

ct

clogged

setting

needle

breaker

plug

terminal

in

and

does not

due

to

seati

with

carbon,

incorrect

order.

clogged

ng,

or jets

loose,

5. Intake

c)

1. I

2.

3. Cool ing fins soil e

4. Small

d) Engine backfires

1.

2.

3.

silenc

er

soiled.

Engine pinks
load,

gnition

Combu

decarboniz

because

too

far

stion

ing,

at

full speed under

advanced,

chamber

d,

end

bushing

getting

glows

shorted,

or

due

carburettor, because

Engine

not

Spark

plug

h

eat value,

Spark

plug

needs

worn

.

spits into

adequa

to

incorrect

dirty

te

or

fuel ,

vitrified,

ngine

4. E

5. W

e)

1.

getting

ater

in

Engine gets too
seizes, because

Engine
(piston cr

2.

Engine

arburettor

3. C
wrong
Coo

ling fins

cyl

inder

There

screw
Control

oil u

are

adjustment

incorrectly

4.

5.

f) Engine has no idling speed, because

1. Idling

2.
wrongly

3. I

gnition

g) Fuel consumption

high, b

ec

1. Fuel

2. J ets

tank

l

eaking,

too large

carburettor

badly

decarbonized

own

polished

not

getting

adjusted

sed,

on

head

soiled,

pre

-ignition s.

cab

le

for

adjusted,

arl}'lature

ause

, fuel line

.

infiltrat

ed

.

hot

and piston

clean

sufficient fuel,

incorr

cylin

der

screw

adjus

ted,

butt

erfly

dama

of

engine

or

carburettor

air,

},

ect

and

or idle s

valve

ged.

is

ly

too

or

top

44

0

INSTALLATION DIMENSIONS FOR

• U

...

,~,t;,

·

SACHS

340

and 340

SS

(with solenoid-controlled starter)

In

the

int

erest

of

technical pr

ogr

ess

we reserve

the

right to

introduce

modifica

tions

wit

hout

notice

.

INSTALLATION DIMENSIONS FOR SACHS 340

..

}'6

and

340

SS

(with inertia-pin ion type star

1~~~-

ter)

0

I

i~~~

~

In t

he

interest of tech nic a l progress

~

·

we reserve t

he

ligh

t to i

ntrodu

ce mod

if icat

ions witho

ut noti ce.

0

INSTALLATION DIMENSIONS FOR

1

10

4 -2

)1.,_

"

SACHS

~

••

o

I

::!I~

"

~

b

~

~

SA

370

,.

~·~

\

129

---

- S,079"

In the interest of technical progress we reserve the rig

ht

to introduce

mod

ifi

catio

ns without notice.

TECHNICAL DATA

SACHS

PS(HP)

23
22
21
20

19
18
17
16
15
1
13
12

11+-----~--------

3,5

1,.

3000

kpm

,,''

,/

SA

"

340

/"

,,,.""""''

,

.,."'"

--~-----.------~

4000

------

3.0

2,5

2,o+-----~-----.---

3ooo

l,.OOO

--~

5000

M

-----,-

5000

p

----

~---

______

----.

6000

U / m

(RPM

ft

...,

6000

U/min
(RPM)

SACHS

26

25

'

21.

23
22
21

20

19

18

17

16

15

11,.

13

12

11

10

in

)

l b

26
25
21,.

23
22
21
20
19
18
17
16

15

3,5-,

3,0-l

2.5-l

2,0

SA

340

PS(HP)

I

9

3000 4000

kpm

.....---

./

3000

40

SS

(super sport)

00

5000

5000

M

p

6000

._

.............

6000

U/ mi n
(RPM

U/min
(RPM

)

ft

lb

~26

25
21,.

23

t-22

21
20

1-19

18
17
16

' 15

)

SACHS

ps

kpm

3,5

3,0

2,5+-----~----~----~----~----,....-----~---+18

SA

370

(Hp)

;

/

.,

.,

';

~

~

30

00

3500

2500 3000 3500

p

,...

,...

.....

.....

/

/

/

;

/

/

/

00

4000

4000

4500

5000

M

4500 5000

5500 6

U/m

5500 6000

U/min

in (R

ft.lbs

(RP

PM)

I

26

25
24

23
22
21
20
19

M)

0

g/PS

h

600

500

1,.00

300

3000

---with

---with grey

In

alu

the interest

4000

min

um cylinder

cast iron

of technical

---

cylinder

progress

be

5000

we

reserve the right

•

lb/HPh

--f

6000

U/min
(R

PM)

F&

1,1,.
1
1,2

1,1

1

o,9

0

SI.O?S:

to int

0,8

0,7

g/

g/

PS

h

,3

,0

,6

t..

rodu

600

5

00
1,.00

30

0

3000 4000

ce

modif

icatio

ns

without not

ice.

I

5000

The i
for
Hg and

ndica

the

ted engine

ful

ly

t l =

be

run-

in

20

°

C)

lb/ HPh

60

00

U

/min

(RPM)

performa

engine with a

the

performance

1,4
1,3
1,2
1,1
1,0
0,9
0,8

0.7
0,6

nce is val

tole

rance of ± 5%. To

given

PSh

600

5

00

400

300

2500 3000

---

----

id

for barometric

above

must

3500

with

carburettor HD-

with

carburettor HR-18 A

readin

g b
obta
be

0

in the performance

mul

tiplied

=

760

by the

4000

mm

correcti

13

Hg
accordi

A

4500

and a

ng

on

foetor 0.97

-------

ir

temperatu

to DIN

lbs

-----

5000 5500 600

627
.

re

0 (b

UJm

tl

= 20° C

= 736mm

0

in

(RP

/HPh

I

-{q

·

1,3

·1,1

1,2

1.0

~

7

0,6

0

M)