With its cylinder ports to transfer fuel/oil mix, the typical 2-stroke engine performs with a power stroke with every two strokes (one revolution of the crankshaft) of the piston. On the other hand, the 4-stroke C4 Technology® engine, with its overhead intake and exhaust valves, uses four strokes of the piston (two revolutions of the crankshaft) for each power stroke. But, without the complexity of a separate lubricating system, which must be frequently checked and monitored to avoid serious engine failure. With Shindaiwa C4 Technology®, its business as usual with our standard 50:1 mix flowing fresh lubricant throughout the engine. No dipstick required!

Shindaiwas C4 Technology® features a unique patented feature called the Power Boost Chamber. This super- charging element helps the engine develop more horsepower and torque compared to traditional 4-stroke engines that do not have the Power Boost Chamber. In multi-position use, an oil pump slinger is ineffective in properly lubricating critical engine parts. In addition, the mechanical slinger tends to reduce overall output and will diminish an engines performance. Again, our C4 Technology® has just a single container for the gas and oil fuel mix no need for an oil pump slinger, separate oil sump, and dipstick!