Yanmar injection pump modifications

[clemsonfor]

A gallon in one pass!

 

[1130Lilshive]

The pump housing is machined to accept THOSE sized P&B's..
P&B's from an inline wont work.. they're much larger & wont fit the bore.
Depending on what pump you have, it IS possible to get more fuel at top end but your going to run into low idle problems..
It wont idle.. & possibly wont shut off..
What I'm talking about is moving the control rack SEGMENTS, 1 tooth OR if you have the adjustable type, that's even better.. you could just adjust the fuel to "more".. & still maintain your shut-off position..
BUT, you'll need a calibration stand for that..

I got to reading through here again and I just noticed where you said adjustable type pump, where you referring to the fuel volume adjustment plates in side the pump? If so could you elaborate on what they do and how to adjust them?