1. (1) You must make sure repairs are made by authorized persons.
2. (2) You must make sure replacement parts are equivalent to the parts used in the original design.

3. (3) You must make sure repairs are not made in Class I, II, or III locations. See Tables 1, 2, and 3 for more information.

   Definitions:

   Class I locations. Areas where flammable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures.

   Class II locations. Areas where the presence of combustible dust could be sufficient to produce explosions.

   Class III locations. Areas where the presence of easily ignitable fibers are suspended in the air but are not in large enough quantities to produce ignitable mixtures.

4. (4) You must make sure fuel and ignition system repairs that involve fire hazards are made only in locations designated for such repairs.
5. (5) You must disconnect the battery before starting repairs to a PIT electrical system.

6. (6) You must close the fuel container shutoff valve before repairing an LP-gas fueled PIT in a garage.

   Exemption:

   The container shutoff valve may be left open if it is necessary to run the engine.

[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 17-18-075, § 296-863-30015, filed 9/5/17, effective 10/6/17; WSR 04-19-051, § 296-863-30015, filed 9/14/04, effective 2/1/05.]