Yanmar YS8 or YSE8 or are they the same ?

[CharliRose]

Hi all, my uncle passed away and left my family a Yamaha MS24 with what i believed was a Yanmar YSE8 engine.

Unfortunately, we could not get it started after bleeding the fuel line, so i removed the fuel injector pump and found the fuel plunger had broken. ( see picture).

Initially I had a tool maker fabricate a new plunger (using the dimension from the broken one ) however that did not work.

Not being able to find any parts in my country - Australia , i have decided to order an OEM pump from Taiwan, but when i checked the identified plate on the engine it is not a YSE8 but a YS8.

Are these the same engine ? or more importantly is the fuel injector pump interchangeable on these two models ?

According the build spec sheet (found on the internet) they were built with an YSM8, which is also referred to as just YS8.

I have attached some pics, any help would be much appreciated.

Also if anyone has had experience with ordering a OEM fuel pump from Taiwan and if they are reliable that would be great also.

My next challenge will be re-seting the governer throttle, as I have only found instructions as it relates to the YSE8.

Thanks in advance. ( i have more photos if that helps )

 

[earlybird]

I've got an idea that the "E" indicates that the engine was supplied with an electrical system; ie alternator etc.

 

[CharliRose]

It does have an starter motor, which may have been added down the track.

FYI - on another, forum a member has confirmed they are the same motor and the fuel pump is interchangeable.