Not a good idea
to observe a professional while he is working. Most of them do not feel comfortable in this situation. A lot of other professionals (not a mechanics) will also not feel comfortable and will not be calm when you staring at them as if they are being tested.
That's why you ask people and ask for recommendations.
Arrive at the garage early in the morning, talk to customers, see how the mechanics work there ... but once you've done researching and you entrust the motorcycle to the mechanic, do not stay to look. It's a matter of trust. It does not matter at all what the mechanic does or says he did.
That what is matters
- Let the motorcycle be reliable and not get stuck on the road until the next schedule treatment.
- That the motorcycle stays in the garage for as little time as possible.
- Your job is to pay as much the mechanics asks (It a matter of trust).
: An old motorcycle should not become a new motorcycle, just should ride and not get stuck on the road.
If there is no trust
it is neither good for you nor good for the mechanic.