The signs you see on this page are very important. They highlight those parts of the handbook where, more than anywhere else, you should stop for a minute and read carefully.
As you can see, each sign has a different symbol to make it immediately clear and easy to identify the subjects in the different areas:

Personal safety.
Important: total or partial failure to follow these instructions can place driver, passengers or others in serious danger.

Protecting the environment.
This shows you the correct procedures to follow to ensure that the vehicle does not harm the environment.

Vehicle well-being.
Important. Total or partial failure to follow these instructions will result in the risk of serious damage to the vehicle and may invalidate the warranty as well.
See also:
Engine Oil Filter
The engine oil filter should be replaced with a new filter at every engine oil
change.
Engine Oil Filter Selection
All of this manufacturer’s engines have a full-flow type disposable oil filter.
...
Brake System
In order to assure brake system performance, all brake system components should
be inspected periodically.
Refer to the “Maintenance Schedule” for the proper maintenance intervals.
WARNING!
Ridi ...
Tire Chains
Use only compact chains, or other traction aids that meet SAE type “Class S”
specifications. Chains must be the proper size for the vehicle, as recommended by
the chain manufacturer.
NOTE: Do no ...


