The following random compilation of items of a technical nature is provided as a supplement to the resources still available to the Ducati single cylinder motorcycle owner. The accuracy of the items presented is undetermined and the information presented should be treated with caution.
Specific technical assistance and advice is available through mailing list forums such as the "BevelHeads."
Ducati Singles Engines
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Blueprint for Power Herb Hitch and Jim Hayes Junior's performance modifications for the 250 narrowcase engine.
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Instructions for Use and Maintenance of the [Ducati] 250cc OHC Racing Motorcycles
Presumably written for the 250SC (narrowcase) racing engine, but of unknown origin. -
How to Build a Vintage Ducati Racing Single ; Engine, carbs, frame + more...
Outstanding reference site - build-you-own rear sets, brake stays, etc.
![Instructions for Use and Maintenance of the [Ducati] 250cc OHC Racing Motorcycles](Duc_Images/250sc.jpg){kind=link}
Ducati Manuals
Ducati Service Bulletin
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250 Mark 3 Desmo head
conversion
(May 10th 1968)
Cycle World 250 Ducati Race Bike Project article published circa 1965-1966.
Ignition Timing of a Ducati Single Carl Liebold's definitive ignition timing guide.
Hear the sound of a 250 revving:
Haynes Ducati
Ducati Workshop Manual
Spare Parts Catalogue
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Haynes Ducati MK III and Desmo Singles (widecase 1969-1976) ISBN 0 85696 445 X
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Ducati Workshop Manual, for overhead cam singles (narrowcase up to 1966)
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Spare Parts Catalogue Exploded assembly drawings showing every component with part numbers for the 250 GT, Monza, SCR, Mark 3, Monza and Mach1 including engine assembly drawings.
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Engine Servicing Tools from Desmo online-shop
Ducati Singles Carburetion
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Ducati Singles Electrics
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| Electrical Systems (magneto) Booklet | Electrical Equipment Operation Booklet | Ignition and Flywheel Specifications Booklet |
- Narrowcase Electrical Systems (magneto) Booklet with schematic
- Narrowcase "Magneto" Schematic with diagnostic information (requires PDF reader to view)
- Narrowcase "Alternator" Schematic
- Narrowcase "Regulator" Schematic {a component of the Alternator system}
- Narrowcase Electrical Equipment Operation Booklet with schematic
- Narrowcase Ignition and Flywheel Specifications Booklet with static timing information
- Narrowcase Regulator teardown, inspection and repair
Ducati Service Bulletin
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Electrical System on the
250 Monza - 5 speed with 6V-60W Alternator
(For testing alternator efficiency)
Ducati Service Bulletin
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Headlight on 160cc, 250
Scrambler, Mark 3
(Alternator modification to increase light output)
Ducati Service Bulletin
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Headlight on 160cc Monza
Jr.
(Alternator modification to increase light output)
Ducati Service Bulletin
- Alternator
and Regulator Test
The regulator depicted looks like the wide case style...
Ducati Service Bulletin
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Headlight Removal
(To run without the battery or headlight on 250 & 350 SCRs with Magneto ignition)
Ducati Service Bulletin
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SCR Regulator test
(For 250 and 350 SCR with 70 Watt systems)
- Narrowcase (31.5mm) Fork rebuild article
- Narrowcase Forks have a manufacturing date code stamped in
the brake boss.
- A fork assembly's date code may help
to establish the year the motorcycle was built.
Ex: June 1965 appears as "6 65" - In North America most Ducatis were sold and
assigned a model year at the "point of sale" such that every motorcycle a
dealer had was sold as a current model year. The headstock placards were
rarely stamped with the complete model year.
Ex: Anno Di Costruz (Year Of Construction) is stamped with an open-ended year; "196 "
- A fork assembly's date code may help
to establish the year the motorcycle was built.
- Widecase Forks
- Rear Wheel bearings
- The wheel requires two #6202 2RS bearings with shields.
- The cush drive requires two #6004 2RS bearings with shield.
