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"Is there a possibility of bending the valves using the rope trick?"
Well yes, there is, if you fail to follow the instruction to use #1 cylinder and be sure the cam has the valves in the firing stroke. You determine that by using a thumb over the spark plug hole, or as some detailed instructions read, ensure the cam lobes are both "perky" by peering through the oil filler hole.
BTW, the voltage readings at the TPS are actually a much better way to verify its functionality, because you measure without much disturbance. Backprobing the plug will ensure a faulty adjustment isn't keeping the switch from actually closing (the "click" is not a totally reliable tell) and it is a whole lot easier to use one probe to check the voltage than try to get two probes into the plug end of the switch with only two hands and no helper to rotate the throttle spool.
The voltage should indeed be near battery voltage. Curious...where did you read it should be 5V?
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Art Benstein near Baltimore
What engineers say and what they mean by it:
"The project is designed for high availability."
Malfunctions will be blamed on the operators mistakes.
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