ANNEX XSupplementary provisions
ANNEX X Technical details for prevention of tampering 1. For engine types and engine families that use an ECU as part of the emission control system the manufacturer shall provide to the approval authority a description of the provisions taken to prevent tampering with and modification of the ECU including the facility for updating using a manufacturer-approved programme or calibration; 2. For engine types and engine families that use mechanical devices as part of the emission control system the manufacturer shall provide to the approval authority a description of the provisions taken to prevent tampering with and modification of the adjustable parameters of the emission control system. This shall include the tamper resistant components such as carburettor limiter caps or sealing of carburettor screws or special screws not adjustable by user. 2.1. The manufacturer shall demonstrate to the technical service that the adjustable parameters of the emission control system cannot be easily tampered by applying reasonable forces, either: — using the tools supplied together with the engine; or, — using ordinary tools such as screwdriver, pliers (including cutting pliers) or wrenches. Ordinary tools do not include: most cutting or grinding tools, drills and rotary cutters, or tools that generate excessive heat or flame. 3. For the purpose of this Annex, engines from different engine families may be further combined into families based upon the type and design of tamper prevention measures utilised. In order to place engines from different engine families into the same tamper prevention engine family the manufacturer shall provide confirmation to the approval authority that the measures used to prevent tampering are similar. In this case the requirements of points 1 and 2 may be performed for one representative engine and the corresponding documentation used during the type approval of all engines in the same tamper prevention engine family. 4. Manufacturers shall provide a warning in the operator's manual stating that tampering with the engine voids the EU type-approval of that particular engine.