Yanmar YSE General information.

[garymalmgren]

Here is some general information that I have collected for the YS series Yanmar engine.

General information
Not 100% correct but some useful information
The Yanmar YS engines...

Manuals
YSE YSB 8/12 HP manual
https://www.sailingthanksdad.com/documentation/Yanmar-YSE-YSBServiceManual.pdf

Parts List.
Handy for parts and assembly process,
http://lsm-diesel.dk/2012/yanmar/pdf/motordele_yse.pdf

Hint for solving a hard to start problem,
I ran out of fuel.
After that the engine was hard to start. It cranked over furiously, but took ages to fire up.
I bled the fuel 10 or more times, but it didn't help.

Then I read in the above General Information site
“resetting the governor linkage at very frequent intervals. If the engine dies at low revs, and will not start, ”
So, I gave it a go and it solved the starting problem right away. I highly recommend this.

The instructions in the Yanmar manual are a little confusing so I have copied the manual page and re-witten the steps.

 

[eebygum]

Here is some general information that I have collected for the YS series Yanmar engine.

General information
Not 100% correct but some useful information
The Yanmar YS engines...

Manuals
YSE YSB 8/12 HP manual
https://www.sailingthanksdad.com/documentation/Yanmar-YSE-YSBServiceManual.pdf

Parts List.
Handy for parts and assembly process,
http://lsm-diesel.dk/2012/yanmar/pdf/motordele_yse.pdf

Hint for solving a hard to start problem,
I ran out of fuel.
After that the engine was hard to start. It cranked over furiously, but took ages to fire up.
I bled the fuel 10 or more times, but it didn't help.

Then I read in the above General Information site
“resetting the governor linkage at very frequent intervals. If the engine dies at low revs, and will not start, ”
So, I gave it a go and it solved the starting problem right away. I highly recommend this.

The instructions in the Yanmar manual are a little confusing so I have copied the manual page and re-witten the steps.
View attachment 132745
View attachment 132746

I also have a copy of the small YSE12 operators manual.



I will share when I’m next back onboard.

 

[CM74]

That bit in the manual about the governor is the most confusing thing I have ever read, they may as well have left it in Japanese!
Thanks for the common sense translation, I'll be adjusting mine soon