Equus: 591 538 Manual Repack

Do not be alarmed by the sudden, low-frequency hum in your inner ear. That is your horse’s resting heart rate. If it exceeds 80 bpm, disconnect and offer a carrot.

The manual describes a simple loop:

brand name) designed for precision engine tuning. It features a split-screen backlit LCD that simultaneously displays engine RPM and advance degrees. Core Specifications Tachometer Range: 249 to 9,990 RPM (+/- 1% accuracy). Advance Degrees: 0° to 90° (+/- 1° accuracy). Ignition Compatibility: equus 591 538 manual