Why the daily check catches what a service visit cannot
Planned maintenance comes around every few hundred hours. A lot happens between visits. A chain that jumped, a fork that cracked at the heel yesterday, a hydraulic puddle that was not there at the end of the last shift: those are fast movers, and by their nature a scheduled visit will not be there when they appear.
The daily check is the only thing standing between a fault that appeared overnight and an operator finding it the hard way with a load in the air. That is the entire argument for it, and it is a good one.
It is also the check most likely to be skipped, because it is repetitive and because almost every time you do it, nothing is wrong. That is what a safety check looks like when it is working.
Making it actually happen
Use a checklist rather than relying on memory, and keep the completed ones. If something does go wrong, the records are the difference between an operation that can show it was doing the right thing and one that cannot.
Give operators a way to report a fault that does not cost them grief. If reporting a problem means an argument or a delay somebody gets blamed for, faults stop being reported. That is a management problem, not an operator problem, and it is the most common reason daily checks become a signature exercise.
Set a rule about what takes a machine out of service and stick to it, so the decision is not being made under pressure with a truck waiting. Brakes, steering, a drifting mast, structural cracks, and leaks should all be automatic stops.
Where the annual inspection fits
The annual or periodic inspection is a deeper look than an operator check: measured chain elongation, fork thickness measured at the heel, brake and hydraulic system condition, structural inspection, and the safety devices verified rather than just switched on.
It comes from the industry standard, from manufacturer schedules, and often from what an insurer expects, rather than from the federal rule. Whether your operation needs one is worth a conversation with your insurer as much as with a tech.
A sensible arrangement for most operations is daily operator checks, planned maintenance on the hour meter, and a thorough annual inspection on top. Each catches things the other two miss.