Compression Tester Adapter Fits Yanmar 3HMF Engines

Compression Tester Adapter Fits Yanmar 3HMF Engines This adapter is proudly MADE IN USA and includes an integrated check valve inside the adapter to hold the pressure and allow you to easily see your engine's maximum compression. This listing also includes a quick disconnect coupling set to let you easily attach your own compression tester gauge. If you do not already have a compression tester gauge please consider our gauge kit in the link below. How To Use: Click Here For Instructions Includes: Custom made aluminum compression tester adapter with integrated check valve Pair of quick disconnect fittings (male & female) with 1/8" NPT fittings Teflon sealing washer (not shown) Fits: ** NOT UNIVERSAL!! Only fits the models below. We offer THREE adapter sizes for the YM series tractor engines. Contact us for other models. ** Yanmar Diesel 3HMF Engines