I just got (for free) an old Sun Engine Performance Tester which has a scope, tach dwell, leakdown tester etc. The scope is an SS-110, the Tach is a u-819 and the leakdown tester is model U-823. Does anyone know of a source for operating manuals for these? Now that Sun is owned by Snap-on, I fear that the support for old stuff may not be too good.
Thanks in advance.

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