See also:

Engine exhaust can be dangerous!
WARNING: ENGINE EXHAUST CAN BE DANGEROUS! Engine exhaust fumes can be extremely dangerous. If, at any time, you smell exhaust fumes inside the vehicle, open the windows immediately. o Do not inhal ...

Care of seat belts
Seat belt systems should never be disassembled or modified. In addition, care should be taken to assure that seat belts and belt hardware are not damaged by seat hinges, doors or other abuse. WAR ...

Spark plugs
Make sure to install new spark plugs of the correct heat range. ...