Primer is difficult to pull in and out and to find the detent. There is a line scratched in the knob - when the line is at 12:00 the primer is unlocked. When it gets too sticky, let me know and I'll lubricate it. A new primer is roughly $3000, so we're going to live with the sticky.
The throttle has an accelerator pump which will do basically the same function as the primer if you pump the throttle.
When you're doing pre-flight on the Archer, sometimes the flaps will hang at full deployment when you're lowering the johnson bar (flap handle).
DON'T lower the bar if the flaps aren't retracting (you can feel there's no weight on the bar), because they will slam up when you start the engine and potentially cause damage. Either leave the flap handle "full" until the engine is running, then the airflow will help the flaps retract as you lower the bar. Or, push the button on the johnson bar and jiggle it up and down and the flaps will then usually follow the bar.
If one gently sets the flaps, they are less likely to get stuck in the full-flap position