Bombardier-Rotax 462 Manual de usuario

·

.

OPERATOR

'

S

MANUAL

TYPE 462 ENGINES

EQU

I

PPED

WI

T

H

BOSCH CONTACT BREAKER

IGNITION SYSTEM AND

BING

CARBU

R

ErOR

Edition

0

4

BOMB

A

R

DIER-ROTAX

G

M

BH

MOTORENFABR

IK

A-4623

Gunsk

i

rchen

-

Au

s

tr

ia

Telefon

:

(07246)

27

1-

0

·

,

Tele

x:

255

46

brg

k a

Telegrammadresse:

Bom

b

rotax

G

un

skirc

h

en

1

988

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FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

-

1

-

Table

of

Contents

Page

2

3

4

6

7

8

9

10

11

.

12

13

14

16

18

20

21

22

Fuel/Fuel Oil

Mixture

Break-in

Procedure

Rotary

Valve

Adjustment

/

Carburetor

Starting

the

engine

/

Spark

Plug

Ingition

Unit

Adjustment

of

I

gnition

Timing

/

Pole Shoe

Gap

Wiring

Diagram

Ignition

Damping

Box

/

Wiring

Diagram

for

mounting

ignition

damping

box 866 572

Lighting

Circuit

Wiring

Diagrams

for

rectifier-regulator

866 080

Wiring Diagrams

for

rectifier

-

regulator

264

870

Rewind

Starter

/

Changing

the

starter

rope

Decarbonizing

/

Main

Torquing

Specifications

Fault-Tracing

-

Schedule

Liquid

-

Cooling System

Gear for

rotary

valve

and

liquid-cooling

pum

p

Mounting-,

Maintenance-

and

Safety

Instructi

on

s

for

UL

-

prop

gear

on

ROTAX

engine

types

377

-

447

-

503

-

462

-

532

24

Service Information

type

462

UL

-

Rotary

Val

v

e

Adjustment

25

Technical

Data

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

-

2

-

GENERAL

The

ROTAX engine

is

a

liquid-cooled

2-stro~~

engine.

Careful

and

extensively

tested~design and rugged

construction

as

well

as

.

the

use

of

.

high quality

parts

warrant

maximum reliability

and

durability. With proper maintenance and

care

and

with

the

use

of

suitable

fuel

and oil

the

engine

wilL

give

you

trouble-free

service for

many

years.

'_

,

The

ROTAX

design

~ncorporates

the

latest

technical

develop-

ments.

In

order

to

take advantage of

future

developm.ents

we

reserve

the

right

to

make modificat~ons

in

the

ROTAX

design

.without

notice.

FUEL

As

fuel

for

engine

type

462

UL

regular

gasoline, leaded

or

unleaded,

octane

number

not

below

RON

90

(or

MON

83)

is

prescribed.

Premium

gasoline

can

be

used,

too.

If

possible,

leaded

fuel

should

be used.

When

using

unleaded

fuel.

only

use

fuels

'

o~

recognized

brands.

When

lead

in

fuel

is

omitted,

alcohol (methanoL ethanoL isobutanol

etc

.

)

is

added

to

avoid

knocking. Due

to

the

water

absorption

of

the

highly

hygros~.o.pical

alcohols. the fuel

quality

cannot

be

maintained

over

a

long

period.

Further

the

alcohol

additive

causes

leaner

fu

~

air

mixture

(because

of

oxygene

in

alcohol)

resulting

in

general

i

)r

/

higher

engine temperatures.

A

higher

percentage

of

alcohol increases the

risk

of

vapour

lock due

to

higher

vapour

pressure

of

alcohol.

The

alcohol

percentage

must

not

exceed

10

%.

FUEL

-

OIL

-

MIXTURE

The

.

ROTAX

engine

is

operated

by

a

mixture of standard

grade

gasoline

and

-

Super

2-stroke

oil

the oil

lubricating

the

moving

engine

parts.

'

Mixing ratio

fuel

be

respected. oil

is 50

:

1;

this

mixing ratio

has

to

Too

much

oil

will

cause

carbon

deposits

on

the

spark

plug,

on

the

piston,

in

the

cylinder

ports

and in

the muffler

and

will

cause

problems.

In

addition,

the

piston ringsmay

stick.

I

f

too

little

oil

is

used_ lubrication

will

be

insufficien

t

,

the

pistons

will seize

and

the

bearings will

be

damaged.

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

-

3

_

-

BREAK-IN

PROCEDURE

The

break-in

has

to

be

perfor~ed with

the

engine

in

the

nir-

frame,

loaded

with

the

propeller. Tishten

the

plane

t

.

o

the

gr-ound

and run the

engine

ac

cording

to the follmdng graph:

Engine

rop

.m·l

.:x

1000

Full

10 15

sec sec

20 30

sec

j

2

min

2

min

1

-

----- ---

-

_-

--- ---- r--

-

.--

;

-

1

,-

1

5

-

_

_.

i..

1

.,

1

2

·1

...

tl

I

•

,

-'

I I

-

I

•

1

T I

.

5,5

5

4,,5

4

3,,5

3

'r

2

"

o

10

20

30

40

50

60

Time

(min)

After

this

procedure

the

idle

has to

be

adjusted.

Then

sh

o

rt

take-offs

can be

conducted

.

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

Rotary

Valve Adjustment

Installation:

To

correctly install

the

rotary valve disc proceed

as

follows:

-

Turning

crankshaft counter-clockwise

(drive

pulley

side),

bring

.

magneto

side

piston

to

Top

Dead Center using

a

T.D.C

o

gauge.

-

.

-

Position

the

rotary valve disc on

gear

to

have edges

as

close

as

possible

to

the

marks.

NOTE:

The

rotary valve disc

is

asymmetrical, therefore,

at

assembly

try

positioning each

side of

disc on gear

to

de:termine

best

installation position.

See

also page

no.

24

CARBURETOR

The

BING

carburetor

is

a

piston

type

carburetor with

float

chamber

.

The

carburetor

can

be

adjusted

by

jets

and

adjusting

screws.

Changing of jets should

only

be

done

by

a

specialist

or

after consulting

the

engine manufacturer.

The air

-

fuel

mixture

at

idle

speed

is

adjusted

by

the

air

adjusting

screw

(see

ill. no.

28).

The

idle

r.p.m.

is

adjusted

by

the

carburetor piston adjust-

ment

screw

(ill.

no.

30).

Note:

The

carburetor

must

be

in

an

exact right

angle

position

i

n

relation

to

the

crankshaft

in

both views

from

top

and

from

the

intake

side

to

ensure

an

equal

mixture

distri-

bution

to

both

cylinders.

Take

care that

end

of

both

ventilation

tubes

(ill. no.

31)

are

protected

from

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

·

.

I

,

.

,

.

BING-Carburetor

40~

T

~

41

42

43

-

5

-

44

~---29

~30

21

24

25

5

0-

4

9-

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

6

-

STARTING

THE ENGINE

On

cold

engine

use

choke.

Don't

set

throttle

.

Start

the

engine.

After

the

first

ignitions

open

throttle

and shortly

after

close

choke

.

Attention:

Throttle

opening

reduces

the

effect

of

,the

choke.

If

the

engine

is

started

too

long

with

the

'

choke,

,

the

engine

gets

flooded with

fuel.

If

this

.

nappens ;

the

_

apar-k

v

p.Lug

s

have

to

be

unscrewed,

cleaned,

dried

and

the

engine has

to

be

started

(cranked

through)

several

times.

If

the engine still

does not

start,

see

chapter

"Fault

Tracing

Schedule".

SPARK

PLUG

If

the

engine

fails

to

start

or

operates

only on

one

cylinder,

_

it

should be

checked whether

the

ignition wiring

is

disconnected

from the

spark plug protectors

or

from

the

spark

plugs.

Then

the

condition

of

the

spark

plugs has

to be checked (bridged

between

the

electrodes,

oily,

sooty

etc.).

If

the

spark

plug

heat

range

and the

carburetor calibration

are

correct,

the spark

plugs look brownish.

'

With

too

high heat

range

(cold

plug)

and

too

rich carburetor

<

,

calibration they look

black

and

sooty.

With

too

low

heat range

(hot

plug)

or

too

lean

,

carburetor

calibration the spark

plugs

are

burnt white

and

the

electrodes

are

covered

with melt

drops.

ATTENTION:'

Heavy

oil

deposits

on the

electrodes

and

insulator

cause

engine

troubles and

have

to

be

removed

regularly

(every

10

hours).

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

,

'

-

7

-

If

even

after

cleaninc

or

chaneing

the

spark

p~ug

there

is

no

spark, the

spark

plug protector

and

the

ignition

cables

and

finally the

ignition

unit

should

be

checked.

IGNITION

UNIT

,The

ROTAX

engine

is

equipped

with

a

BOSCH

magneto generator

12V

l~OW

producing

the

current

necessary

for the

spark.

The

ignition

unit

has

been

set

most

carefully

and

precisely

by

the

factory.

Make

no

changes

unless

absolutely

nec

es

sary

,'

In

case of

troubles

observe

the

following:

If

the

ignition

fails

intermittently

or

if

there

are

other

troubles

that

are

due

to

neither

spark

plug

nor

jets

nor

carburetor~

the

contact

breakers may

be the cause.

Contacts

must

be

clean

and

must

not

be burnt.

With

new

engines

the

cam-follower

of the

contact

breaker

must still adjust

it-

self

.

Re-setting

of

contacts

may therefore

be

necessary

'

after

some

time.

The

breaker contacts

are

accessible

after

remo~al

of

the

rewind

starter and

the

starting

pulley. The

magneto

housing

need

not

be

removed.

To

check

whether

the

ignition

timing

is

correct

there

is

an

arrow

on

the

crank~ase.

Further

there

is

a

mark

on

'

the

magneto

housing.

At

the

moment

of

ignition

(i.e.

~hen

br

e

aker

contacts

open~

check

with

test

lamp~

buzzer

etc.~

cori

~e

c

t

ed

to

'

shorting

cable

of

the

respective cylinder

and

to

mass),the

mark

on

the

magneto housing must correspond with

the

arrow

on

the

crankcase.

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

-'8

-

ADJUSTMENT

OF

IGNITION

TIMING

The

igriition

timing

is

~djusted after loosening

the

fixing

screw

G

the

adjusting groove

H

(see

wiring

diagram),

.

so

that

the

contact breaker

starts

opening when

the

piston

is

{

~'

.

-

"~'

(1

0)

-

'

.

_

.

:

;

"

:

·

-:

,

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mm

;

8

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.

be

.

.:t.:

.

o:;I;'J;L

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•

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D.

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O

.

•

.-

,

--

-,

_

-

..

_

..

.

_

i

.

:

'

"

1

Che

.

ck

with

test lamp or

'

buzzer

as

described

before.

When

cranking

the

engine,

the

breaker contacts

must

open

0,30

~

0,40

mm

(0,012

7

0,015

in).

If

this

is

not the case,

turn

the

stator

plate

and repeat

the

above procedure.

POLE

SHOE

GAP

When

correct

timing

is

achieved, check pole

shoe

break-away

gap.

The gap

must

be

within

13

to

17

mm

or

0,51

to

0.

9

7

in.

(see

illustration)

when

the

mark

on

flywheel corresponds

w~th

mark

on fan

housing.

If

the

~reak-away

gap

is

out

of

tolerance,

the

flywheel

may

have

turned

on the crankshaft.

Remove

flywheel

and inspect

taper

and

key.

Repair

if

necessary.

pole

Q)

.

,

cardboard

strip

magnet

FORHISTORICALREFERENCEPURPOSESONLY:THISINFORMATIONMAYBEOUTDATED!

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