An assisted pull-up machine can make its weight stack seem backwards at first. On a counterbalanced model, selecting more weight can provide more help rather than make the pull-up harder. Before choosing a setting, learn what the stack on that particular machine is doing.
Hammer Strength’s Select assist dip/chin manual describes a counterbalanced design in which the selected weight offsets part of the user’s weight. This explanation belongs to that model’s mechanism. Check the placard, manual or staff instruction for the machine in front of you instead of applying the rule to every piece of gym equipment.
Ask what moves and what provides assistance
Look at the supported platform and the path it travels. Ask a qualified member of staff to show you how to enter, position yourself and leave the machine. That demonstration matters because a moving support is different from a fixed step or a stationary seat.
Do not work out the entry sequence by copying someone midway through a repetition. They may be using another variation or have experience you do not yet have. Start with the machine at rest and make sure you understand where hands, knees or feet are intended to go on that model.
Interpret the stack without inventing exact arithmetic
On the identified counterbalanced design, more selected assistance generally means you supply less of the effort needed to move your body. Less assistance makes the task more demanding. This is different from a conventional resistance stack that you lift directly against.
Avoid treating the number as a precise calculation of how much body weight you have lifted. The machine’s mechanism, setup and movement are part of the experience. A stack label is not a reliable basis for comparing your performance with another brand or with an unassisted pull-up.
For a first session, record the machine and setting you actually used. “Assist machine beside the cable station, setting shown by instructor” is more useful than a confident but unsupported claim about an exact number of kilograms lifted.
Choose a setting for controlled practice
With appropriate instruction, choose assistance that lets you practise the intended movement without rushing through the supported position or dropping onto it. Learn the start, pull and controlled return before treating the setting as a score to beat.
Change the selector only as the manufacturer directs, with the machine at rest. Do not reach toward a moving stack or try to adjust the assistance while another person is using the equipment. If a pin, support or movement seems wrong, stop and ask staff rather than improvising a repair.
Keep the record comparable
When you return, use the same identified machine and note the setup as well as the assistance. Handle choice and the version of the exercise can change what you are comparing. A lower number is not automatically progress if the movement has become a hurried partial repetition.
The first useful achievement is understanding the counterweight. Once you know why more selected weight can mean more help, you can ask clearer questions, follow a suitable demonstration and keep an honest record of the practice you actually completed.