the PDF guide
Jawa – CZ Parts
When you need a
spare part for your bike, it can often prove to be quite a difficult task to
get the correct one. New Jawa’s are available here in the UK from F2
Motorcycles who can supply parts for the current JAWA 2 strokes and for the
Sportard. The old dealer network from the 1970s and 80’s collapsed, which
now means that any spares we require are usually obtained by mail order. In
the UK Mick Berrill’s is the primary source of new spares and if you know
the part number quoted in the spares manual then life can be so much easier
not only for them but also for yourself.
has some spare parts catalogues with part numbers in and the Club Librarian
– Arthur Fleming can usually provide a copy of the parts list for your
particular model [for a small cost].
Contacts info is
on page 17 of every club magazine and when making contact please quote your
membership number if known. Other supplier are listed in the links on this
website. Do try and avoid spares made outside Europe as we have had some
tales of poor quality and fit.
below regarding how Jawa-CZ parts originate has been taken from the old MZ-B
Web site and we thank them for letting us use it.
JAWA have used
since the beginning of the 1950s a unified system for parts numbering. This
is as follows:-
show parts group.
brake drum front.
As not all parts
are changed when there was a model change bikes of a later model may well
use the same parts as earlier models. A JAWA produced in 2001 has for
example a part 151 22 021 (a securing washer). This parts has not been
changed since Perak models produced in 1945. It also happens that some parts
show types of motorcycle which never actually reached production. It could
be that the type of engine or parts developed was for a model which was
never produced but which were later used on other models.
As JAWA started
production of the first Perak immediately after the war, standardization of
parts between models was a keyword. It even influenced numbering. However it
soon showed that these numbers were too short to encompass all types, so the
system was changed. This change was as shown below:-
(e.g.) Perak type
11 became type 151, type 18 became 158 and type 12 became (for whatever
reason 150). The 4 stroke type 15 was renamed 155. Example: the piston ring
for Perak is in the old catalogue part 101215. This was changed in the 50s
to 150 12 015. This number is the one still used today. So it’s quite easy
to see why occasionally when just asking for a certain engine capacity part,
that the wrong part version could be delivered to you. If possible get to
know the part numbers for your particular model. It could save you a lot of
frustration. (Source: Swindon Smoke Signals).
I hate to spoil this for readers but some identical parts
have different numbers and we also find errors in the Parts Lists. An
example is in the JAWA 638 list on page 128 which says there are 2 “O rings”
in each silencer when in fact there are 3 per side. They carry part number
634-01-271 as they were first used on late model 634’s.
Early Parts Lists identified screws eg M8x45 but later ones
A further complication is that later 638’s had a different
layshaft so the components on the shaft are different to those listed in the
It is important to keep parts even if broken so they might be
matched to any available spares.
By Pete Edwards
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