Unless one lives in Australia or England were original Lister CS engines are still being found on the used market, options are mostly limited to purchasing a new Listeroid from India or an importer.

Used engines are a good buy, Lister diesels are incredibly long lived and repairs are easy to make. A Lister CS diesel can be rebuilt where it sits. The head, cylinder, piston and valves can be removed in minutes.

New Listeroid Diesels manufactured in India can also be great bargains.    Though buying one engine and shipping  it from India may not be cost effective.  

There are many companies in India manufacturing Lister CS clones. Quality can vary greatly from company to company. Some companies are fairly  large in size and use modern equipment, others are small backyard companies.

If you want your Listeroid diesel to last   for many decades as it is very capable    to do, some effort needs to be made before running the engine.

Many do-it-yourselfers (diyers) don't    mind stripping down the engine,     cleaning it of possible left over casting sand, finishing critical wear areas, or balancing fly wheels. Listeroid castings are usually of very good quality, the engines are easy to work on, and parts  are few and easy to obtain.

www.listeroid.com starts with higher quality Listeroid diesels and then cleans finishes, balances the engine, and adds a thermostat for constant operating temperature which increases fuel economy and engine life. www.listeroid.com is an option if a long lived engine ready to run straight from the box is what you desire.

www.listeroid.com also manufactures a turnkey generator that is all set up to burn waster vegetable oil (wvo). Two fuel tanks are used. The first holds regular off road diesel fuel and is used for stopping and starting the engine. Once the engine is heated up a flip of a switch brings fuel from the second tank containing wvo which has preheated by the engine coolant.