Ducati 250 Scrambler 1965 Instructions For Use And Maintenance Manual

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1 st. ISSUE - PRINTED DM - Mod. 751/E December 1964 - 10.000

Every Motorcycle receives one copy of the present booklet.

4

GUARANTEE CARD

Every D U CAT I MOT 0 R C Y C LEis supplied with

a (( Guarantee Card )) which will be found in the sealed

tool box.

The seal may be broken only by the purchaser.

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The contents of this booklet are not binding and though the maIn specIfi-

cations of the motorcycle described and Illustrated in this booklet remain

unchanged. the DUCATI MECCANICA S,p,A, will be free to Introduce

modifications of some details. or of some accessories, If these modifi-

cations will be judged necessary, or if they can Improve the motorcycle,

or finally for some technical-economical exigencies. but without being

obliged to bring this booklet up-to-date.

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Dear Sir;

We are very glad to welcome you among our clients, and feel sure

that you will not fail to appreciate the magnificent performance

of the DUCATI Motorcycles.

The magnificent performance and reliability of our machines reo

fleet the experience gained throughout many years of successful

racing both on track and road.

In order to obtain the fine service that the Ducati machine is

capable of giving, it is essential that the instructions contained

in ' this book be religiously adhered to.

If ,these instructions are followed closely, particularly during the

running-in period of the machine then you will be assured 0f-

many years trouble-free enjoyable riding.

We thank your for your patronage and congratulate you on your

wise choice of such a fine machine with its unequalled perfor-

mance.

DUCATI MECCANICA S.p.A.

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A FOREWORD

The main goal of the present instruction booklet is to enable the

owner of an over head earn-shaft DUCATI Motorcycle to use his

vehicle in the best possible way.

The lollöwìng notices are tñerêtore only simple recommendations,

suggestions, advices, and terms of reference, sufficient to enable

anyone, having no experience or ignoring any special technical

knowledge, to use his vechicle and to maintain it for a long time

in perfect working condition.

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DUCATI SERVICING GARAGE

It is advisable when taking the machine to a garage for

repairs to ensure that the garage is a Ducati agent as the

staff will have been specially trained and the garage will

have been equipped with the necessary tools to carry out

any repair required. They will also carry a full stock of

genuine Ducati spares.

SPARE PARTS

It is absolutely necessary that each order for spare parts

clearly states the following data:

1) The catalogue code of the spare part (obtained from

the Spare Parts Catalogue of the model wanted).

2) Serial number of the engine (when ordering spare

parts of the engine).

3) Serial number of the frame (when ordering spare

parts of the frame).

11

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IDENTIFICATION NUMBERS

Every DUCATI over head earn-shaft motorcycle can be

identified by its frame and engine serial number.

The same serial number is stamped on the central girder

near the battery.

The engine serial I1ürtbet is stamped on the crankcase

near the front connection between the engine and the

frame.

I - Engine serial number

2 - Frame serial number

-- -. ---_.-------_._----- -'--- - ._-- --

._- ------_._-. - - _... -- . -- -----_.-

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PRECAUTIONS

to be followed during the initial running-in period

The modern engine construction calls for very close tole-

rances between moving parts. It is essential that care is

exercised during the running-in period, a process which

has already been started by the factory. The engine

sliolJJd never he over-revved or allowed to(( slög )) dtifing

this time and recommended maximum speeds in gears

should be strictly observed.

t.

MAXIMUM SPEED IN MILES AND KMS, PER HOUR

DISTANCE TRAVELLED

¡, ..;.. ,.w I ;. -z;¡ .... ;. .'dO... i ;, .., .,"'! ;, h, _

--~------ '_.__.~- ~,-- . .. -------

. ---- _.._---'--- -----

Up to 300 mi les

16 22 29 j 36 I 40

Up to 500 Km,

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"-", '-""'-""-" '" -'-", ,..,..

----..,,-, ---" '-'--,-.. - ,..-,--,----! '--'-'---i --, -----,-

From

600

miles

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300

to

21

31

I

40

49

I

56

From

500 to 1000

Km.

34

50

64

i

79

90

13

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-'-". -- -_. -_...

It is advisable to change the oil first at 300 miles and

then at 600 miles (with the engine warm). Re-adjust

the tappets, regulating the adjusting screw in the 250 _

GT and MONZA, fitting the rocker appropriate shim

in the other 3 models; tighten cylinder head and holding

nuts, crankcase nuts and screws. Do not overtighten

as damage may result in thread stripping or bolts brea-

king. Readjust contact breaker.

In order to ensure careful running-in the carburetor has

been fitted with a distance piece which restricts the full

use of the accelerator. After

600 miles this should be re;.

moved by your Ducati dealer.

Failure to comply with the above recommendations

absolves the manufacturer from all

liability of guarantee

and any damage that may result.

._~..- --_. --~_._- ---

--... ...- -~ ....__.._~_._--

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.

MAIN SPECIFICATIONS

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ENGINE

- Single cylinderl four strokel with cylinder inclined for-

ward 10° from the verticaL. The engine is supported

by a cradle formed frame.

- bore: 74 mm. (2.9134l')

- stroke: 57,8 mm. (2.27559")

- cylinder capacity: 248l589 C.c. (15.1698 cu.in.)

- compression ratio: 8 : 1 for the 250 GT and Mon-

zal 10 : 1 for 250 MACH 1 and Mark III, and

9.2 : 1 for 250 SCRAMBLER;

15

-. ..' .'. .. ~__ ~ _ ..a._ .'~

- . , ~ , ~. -.' ~. ''; -','-:' .J..,. ~ '.........;._:'..":.~~..~~~:.;.....~......:./..:.;~-i"!.i..":

- combustion chamber with hemispherical ceiling;

- cylinder barrel of light alloy, deeply finned and with

inserted special cast-iron liner;

- connecting rod of special steel with big-end assembled

on a cage roller' bearing and little-end bushed to take

the gudgeon pin;

- pistons of light alloy, convex topped and in one piece,

with four piston rings, two of which are slotted oils

scrapers;

- cylinder head cast in light alloy and closely finned

with inserted valve seats.

TIMING

The .¡timing system is provided with overhead valves, in-

clined at 80° timed by an overhead camshaft. The valves

are made of special steel.

250 GT and MONZA

SUCTION

PMI

BOC

16

COMPRESSION WORKINGSTROKE EXHAUST

PMI

BOC

PMI

BOC

~

PMI

BOC

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Specifications

The timing values, with a clearance of 0.20 mm. (0.0079")

between the valve and the rocker are the following:

Valve

Opening :t 5"

I

Closing :t 50

Suction

200 before TOC

700 after BOC .

Exhaust

i

500 before BOC

I

300 after TOC ..

*

BDC

** TDC

Bottom dead center.

Top dead center.

SUCTION

250 MACH i and MARK III

BOC

COMPRESSION ,WORKINGSTROKE EXHAUST

PMI

BOC

Timing, with a clearance of 0.15 mm. (0.0059 in.) bet-

ween the valve and the suction rocker and 0.30 mm.

(0.0118 in.) between the valve and the exhaust rocker,

are as follows:

Valve i Opening :! 5°

--_.._..~- ~--------' ---_.._-'---

Suction 62° before TOC

Exhaust 700 before BOC

Closing :t 5°

76° after BOC .

48° after TOC ..

* BDC - Bottom dead center.

** TDC - Top dead center.

---,._~----- - -----.~_._----- _.,--------~

17

250 SCRABLER

SUCTION

BOC

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COMPRESSION WORKINGSTROKE EXHAUST

PMI

BOC

Timing with a clearance of 0.15 mm. (0.0059 in.) bet-

ween the valve and the suction rocker, and 0.20 (0.0079

in.) between the valve and the exhaust rocker are as

follows:

Valve

Opening

:f

5°

Closing

:f

50

-,

Suction

32°

before

TOC

75°

after

BOC'

Exhaust

55°

before

BOC

44°

after

TOC"

* BDC - Bottom dead center.

* ,.. TDC - Top dead center.

~'--'-'- -~------- ----

18

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Ducati 250 Scrambler 1965, 250 GT 1965, 250 Mach 1 1965, 250 Mark 3 1965, 250 Monza 1965 Instructions For Use And Maintenance Manual

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