1. Online Sources:
* eBay and Amazon: These platforms often have used repair manuals available, both in physical and digital formats.
* Helms Publishing: This company is known for its comprehensive repair manuals, but their manuals are primarily for newer vehicles. You might find older ones listed online.
* Mercedes-Benz Owner's Manuals: While not a full repair manual, the original owner's manual can provide some basic information and troubleshooting guides. You can sometimes find these online on platforms like eBay or through specialized Mercedes-Benz forums.
2. Physical Stores:
* Local Auto Parts Stores: Check your local auto parts stores, especially those specializing in European vehicles. They might have repair manuals in stock or be able to order them for you.
* Used Bookstores: While less likely, used bookstores might have older repair manuals for sale.
3. Online Resources & Forums:
* Mercedes-Benz Forums: Many online forums dedicated to Mercedes-Benz owners often have sections where members share repair manuals and information.
* Mercedes-Benz Enthusiast Websites: Websites dedicated to classic Mercedes-Benz models may have resources like repair manuals or links to external sources.
4. Professional Mechanics:
* Mercedes-Benz Dealerships: Although it might be expensive, you can contact a Mercedes-Benz dealership for a copy of the repair manual or access to their repair information systems.
* Independent Mechanics: Some independent mechanics who specialize in Mercedes-Benz might be willing to share their repair manual resources or recommend sources.
Important Note: Ensure the manual you choose is specifically for your 1986 Mercedes-Benz 300E. Different models and years can have significant variations in their engine and systems.
Remember, some repair manuals might be outdated or incomplete. It's always a good idea to cross-reference information with multiple sources and consult with a qualified mechanic for complex repairs.
