The Jowett Javelin and Jupiter Technical Notes series of documents contain service information that applies to the Jowett Javelin – Models PA, PB, PC, PD and PE – and to the Jowett Jupiter – Models SA and SC – manufactured by Jowett Cars Limited, Idle, Bradford, Yorkshire, England.

These Technical Notes should be read in conjunction with publications produced by Jowett Cars Limited (JCL). These notes cannot, in any way, be considered to be a comprehensive Service Manual. They have been built up, from over fifty years of experience, by a number of club members who have the ability to successfully maintain their beloved Jowett motor cars. These club members are a truly international lot, and it is wonderful that this technical information is so freely shared. There are contributors from England, Australia and New Zealand who have sorted out some concerns with respect to the subject motor cars’ reliability. There is also information sourced via the club network that sources and adapts components from other, more populace motor cars, to keep Jowetts on the world’s highways and byways.