Author Topic: Petter BA1 user manual  (Read 1243 times)


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Petter BA1 user manual
« on: October 06, 2022, 01:17:50 PM »
I've just recently purchased a thwaites mid 70s dumper and I'm led to believe its got a petter BA1 engine since I know nothing about lister and petter engines I was wondering if anyone on here had any form of user manual that would give me a rough idea of how to properly use and service, oil and maintenance.


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Re: Petter BA1 user manual
« Reply #1 on: October 09, 2022, 11:09:50 AM »
Yes that's a Petter BA engine for sure. Your best bet is to keep an eye out for ebay listings, as these manuals appear on there quite often.

Good engines when they are looked after, but they are not tolerant of abuse. Depending on who you talk to they were widely thought to not be the best engine Petters made. Many advanced features, including metric thread forms on all the fasteners.

Early versions were prone to head to cylinder barrel leakage (no head gasket). Petters redesigned this aspect but it still didn't totally cure this problem.