Join Date: Oct 2010
Location: Dana Point, Ca
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Re: Injector Removal- Yanmar Engines
the insulation washer fits down in to a recess on the top of the pre-combustion chamber and can be dug out with an awl or the like. it is a aluminizsed fiber washer, like head gasket material. the o ring is up around the top of the body of the injector and helps keep moisture from getting down the side of the injector so it does not rust and make removal at a latter date difficult. On mine the pre combustion chamber was changed and required the head be removed and a 10 ton press to get it out. the PO's so called mechanic did not put in an o ring and the parts were rusted in. he told me it was not needed so he left it out. he also told me that the injector was still good and when i remove it the nozzle hole was about twice the size of the new one. he doesn't work on this engine anymore.
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Last edited by overbored; 02-22-2013 at 03:42 PM.