Stirlingkit User Guide

Looking to pick up your very first hit and miss engine? With RETROL and OKMO offering two popular horizontal four-stroke models priced within $30 of each other, many hobbyists find themselves stuck on which one to choose. It really comes down to your hands-on preference: if you love the challenge...

Things You Must Know Before Installing the P51 Pulley on Lister D & B01 Models 1. Is this issue common on all engines? The OKMO P51 friction clutch pulley is designed to fit a wide range of OKMO miniature engine models. Most compatible models will not encounter this front starter...

When choosing a Lister D engine model, small details can make a big difference—not just in appearance, but also in how the model fits your display style or project setup. Recently, we introduced a new solid wheel version of the L-D engine alongside the classic spoked wheel design. If you’re...

How to Tune Your Engine to the Optimal Operating Condition In the previous tutorial, we explained how to adjust the B02 Engine ignition timing.In this guide, we will show you how to fine-tune the engine to reach its optimal operating condition, including carburetor adjustment and governor tuning.   1. Check...

Miniature internal combustion engines rely on precise ignition timing to run smoothly. If the timing is slightly off, the engine may fail to start or run inefficiently. In this guide, we’ll walk through how to adjust the ignition timing on the B02 engine, explain the basic working principle, and show...

There have been a lot of questions lately about how to best tune the H75 so that everything works properly and prevents abnormal operation.We are honored to invite Engine Man, who will tell us what to pay attention to during debugging. 🔶️ H75 Tuning Tips 🔶️I got a couple of...

Several days ago I bought a h74 engine but I have a question, which type of oil use it? It is oil for two times engine? I have a doubt because the engine needs an oil example SAE 30. Do you recommend fully synthetic oil for the H74 Twin engine...