The
JRS mail order cleaning service has been offered for many years.
Whilst the majority of customers are private individuals, work
is completed for a dozen or so of the major UK motorcycle trade
retailers who value the JRS service and the South Wales labour
rates.
This
range of services has now been increased to reflect developments
in the business and also in an attempt to provide a budget service
to those who would like to take advantage of the JRS/UCC expertise
at a reduced cost.
The
choice is yours but you can be assured that the quality of service
and the workmanship that sets the JRS cleaning service apart
from the rest is as good as ever.
Cleaning
services:
* Basic clean
*****Comprehensive clean
*****Comprehensive clean and component
restoration.
Some
general notes:
Traditionally
JRS has offered just one way of cleaning motorcycle carburettors
and that is still offered but is now known as the Comprehensive
Clean. It is more expensive but the service is as
comprehensive as is possible and the complete dismantling and
the physical check of the units has obviously been a relied
upon by trade and private customers alike. Indeed it
has undoubtedly been because of this that the cleaning has been
so successful: nothing has been left to chance.
The
Basic clean now offered is a more affordable level
of service that is available to you. It does not involve me
in as much work and therefore costs you less. However the same
equipment, solutions and expertise is applied to all Basic cleans.
This is the cleaning process that is offered virtually everywhere
and if you are of the opinion that it will be suitable for you,
then it is available here but I reserve the right to return
work if I think that it will be a waste of your money or will
damage your carburettors.
NB: There are applications that I will
not process via a Budget clean and these are some of the more
modern carburettors, particularly those that carry sensors that
feed back to the bike’s ECU. All V4 applications are also
excluded as it is quite clear to me that the budget process
would do more harm than good.
JRS has probably cleaned most makes and types of motorcycle
carburettor over the years. Regardless of year, make
or bike (or scooter) they all get the same care and attention.
Whilst the JRS motorcycle restoration services are mainly geared
to classic continental machines, the carburettor services
are predominantly used by owners of Japanese carbs, simply because
there are so many of them and they are fitted to a wide range
of bikes and not all Japanese at that.
The
problems associated with carburettor contamination
display themselves in a variety of ways. A carburettor contains
as many as 4 different fuelling circuits within each carburettor
and to obtain seamless fuelling over the entire engine operating
range, it is important that all of the systems work as designed.
Each system, possibly other than the cold start, does not shut
off at some predetermined point where the next circuit takes
over, but they should all blend. Thus fault diagnosis is not
a simple affair.
Carburettors
left for as short a period as three months with a supply
of fuel to them will get into a mess very quickly. The jets
are relatively easily cleaned but the real problems lie within
the body of the carburettor and aerosol sprays and the like
will simply not remove them. Imports from Japan and
the USA are renowned for this problem and these problems are
further compounded by the strange fuels that they use in those
countries. NC30 carbs are illustrated on this web and
these arrive at the JRS offices on a regular basis.
Whether
carburettors have problems or not, their operational
efficiency depends to a large extent on their being in optimum
condition and this is understood by those who require
optimum peformance from their machines. Owners and riders of
competition machines use JRS to attend to their carburation
needs on an annual basis.
If
your carburettors are giving trouble, you may consider that
replacement with a secondhand set would be preferable to cleaning.
There is simply no way that the operational efficiency
of the carburettors you may purchase can be assessed from their
appearance. You may yet end up with carbs that are
worse than the ones you already have.
The generally
accepted rule is: If you know the carbs worked
well at some time in the past and that they have not been damaged
since, keep them and clean them.
Lastly: not all cleaning services
are the same: costs and more importantly standards of workmanship
and service vary enormously. Cleaning or restoration should
be a once only requirement. So get it done by a competent and
reliable firm.
