RETROL D16 16cc Diesel Engine — Sixth Revision Upgrade

We are proud to announce the sixth revision of the RETROL 16cc Horizontal 4-Stroke Diesel Stationary Engine (D16). This update marks a major step forward in performance, reliability, and overall user experience.

Issues in Previous Versions

Through feedback from our valued users and extensive testing, we identified that earlier versions of the D16 engine were prone to severe damage under high-speed operation. Specifically:

• Vibration-induced stress: High-speed operation caused excessive vibration, which in some cases led to cracks or breakage in the fuel system components.
• Fuel system instability: The original fuel pump and injector sometimes failed to maintain precise fuel delivery, resulting in inconsistent engine performance and, in rare cases, operational damage.
• Repair challenges: Users who experienced these issues often required detailed technical guidance to restore proper function, which we realized could be simplified and improved with a more robust design.

These issues highlighted the need for a careful redesign to ensure long-term reliability while maintaining the realistic performance and educational value of the engine.

How We Improved

In the sixth revision, we focused on eliminating the root causes of previous failures:

• Upgraded fuel pump and injector: Redesigned for higher stability, precise fuel delivery, and improved durability under vibration and high-speed operation.
• Enhanced structural resilience: Adjustments to key components reduce stress and prevent the violent damage previously observed.
• Thorough testing: Every unit undergoes rigorous high-speed and vibration testing to ensure consistent performance before shipping.

These changes make the latest version of the D16 safer, more reliable, and easier to maintain, allowing enthusiasts to enjoy engine with confidence.

Free Upgrade for Existing Customers
If you’ve purchased a previous version of the RETROL D16, you can receive the upgraded fuel pump and injector free of charge. Simply contact us via email, and we will provide the replacement parts so your engine performs just like the latest model.

Support for Existing Customers

For friends who purchased earlier versions and may have experienced issues, we invite you to contact us via email. We will provide detailed instructions on exactly what needs to be addressed to restore optimal performance. If you prefer, we can perform the upgrade on your behalf to ensure your engine meets the same standards as the latest model.

We extend our deepest thanks to Mr. Hansen for his guidance throughout this revision, and to all our customers for their patience and continued support. Your feedback has been invaluable in helping us refine the D16 engine to deliver a more robust and rewarding modeling experience.

The RETROL D16 Sixth Revision is now available for purchase, offering both new and returning customers an engine that combines realism, durability, and reliability.

We will also include a comprehensive D16 engine tutorial video. The video comes with English subtitles and provides step-by-step guidance on common issues and adjustment methods, helping both new and existing users get the most out of their engine.