Yanmar lists a special tool, TOL-97190060, but I can't find a compression number or a procedure in any of the Yanmar technical or service manuals that I have. The tool seems to be readily available online from several vendors, but not inexpensive.
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Also mentioned in a thread by
@AfghanVeteran2010;
So, I bought a MEP-831a from Ebay. Going to be at least a few weeks before it gets here, in the mean time I need run some things by this fourm. The set has 7Hrs on it, has no battery so im needing that. I figure some SLA PS-12180 NB 12V 18AH battery's should work out nicely, way cheaper than...
www.steelsoldiers.com
All the best,
2Pbfeet
Definitely a bit pricey!
For testing the 002/003 and 802/803's I just made "Dummy" injector bodies out of plain mild steel and tapped a 1/4" NPT thread in the end to screw my gage into. then put an O-ring groove in the bottom to seal it to the head.
It just bolts in place of the injector, which is exactly what the "Tool Set" appears to be.
The only similar adapter in the Harbor Freight kit is meant for a Detroit I believe, and probably way too big.