40 CFR § 86.079-39 - Submission of maintenance instructions.

---
identifier: "/us/cfr/t40/s86.079-39"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 86.079-39 - Submission of maintenance instructions."
title_number: 40
title_name: "Protection of Environment"
section_number: "86.079-39"
section_name: "Submission of maintenance instructions."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "86"
part_name: "CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401-7671q."
cfr_part: "86"
---


# 86.079-39 Submission of maintenance instructions.

(a) The manufacturer shall provide to the Administrator, no later than the time of the submission required by § 86.079-23, a copy of the maintenance instructions which the manufacturer proposes to supply to the ultimate purchaser in accordance with § 86.079-38(a). The Administrator will review such instructions to determine whether they are reasonable and necessary to assure the proper functioning of the vehicle's (or engine's) emission control systems. The Administrator will notify the manufacturer of his determination whether such instructions are reasonable and necessary to assure the proper functioning of the emission control systems.

(b) Any revision to the maintenance instructions which will affect emissions shall be supplied to the Administrator at least 30 days before being supplied to the ultimate purchaser unless the Administrator consents to a lesser period of time.

[42 FR 45151, Sept. 8, 1977]