The adjusting bolt you are pointing at on your pump just hits arm #2 that controls the metering valve #4 (both in first pic). If any pump repair shop is using this to set the total horse power on an injestion pump then they are doing a poor rigged up job. This is to set the torque response of the pump. It will not give you more total fuel delivery unless someone has set the injection pump wrong internally.
To correctly adjust the maximum fuel delivery you need to tighten bolt( second picture) #12. That spreads the retaining clamp #13 open. This lets the pistons #11 travel out into the cam ring further. This gets you a higher maximum fuel delivery.
The adjustment bolt you are pointing at does not change the maximum fuel delivery. It just changes when the pump will allow the maximum fuel delivery. You will not gain much horse power and you will make it smoke like a freight train.
I have set them on a dynometer where you can actually see the horse power not just guess because it is smoking more.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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