The OTC Motorcycle Compression Tester Kit (5604) is a reliable and versatile tool designed to measure the compression pressure within the cylinders of motorcycles and small engines. It’s a valuable asset for diagnosing engine health and troubleshooting performance issues. KEY FEATURES AND BENEFITS: Durability: Corrosion-resistant nickel-plated finish for long-lasting performance. Flexibility: 10-inch flex hose gauge assembly for easy access and maneuverability. Clear Readability: 2.5-inch gauge with a chrome bezel and protective boot for accurate readings in psi and kPa. Versatility: Includes three different size hose adapters to fit various motorcycle and small engine plug sizes. Convenience: 12-inch flex hoses, including an extra-length one for V-Twin applications, provide optimal viewing angles. Portability: Rugged blow-molded hard case with a removable lid for easy storage and transportation. Maintenance: Repair parts kit included for quick and easy maintenance. SPECIFICATIONS: Gauge Size: 2-1/2″ Pressure Range: 0-300 psi / 0-2100 kPa Hose Lengths: 12″ (standard and extra-length) Adapter Sizes: 10mm, 12mm, 14mm HOW TO USE: Prepare the Engine: Ensure the engine is at operating temperature to obtain accurate readings. Attach the Adapter: Select the appropriate adapter size for your spark plug and securely attach it to the hose. Connect the Gauge: Connect the hose to the compression gauge and ensure a tight fit. Remove the Spark Plug: Remove the spark plug from the cylinder you want to test. Attach the Gauge: Insert the adapter into the spark plug hole and fully thread it. Crank the Engine: Slowly and steadily crank the engine several times, allowing the gauge needle to stabilize. Read the Reading: Record the peak pressure reading on the gauge. Repeat for Other Cylinders: Repeat steps 4-7 for any additional cylinders you want to test. Compare Results: Compare the readings from each cylinder to determine if there are any significant variations. Consult your motorcycle’s service manual for specific compression specifications. BENEFITS OF USING OTC MOTORCYCLE COMPRESSION TESTER KIT (5604): Accurate Diagnosis: Quickly identify engine problems related to compression issues. Preventive Maintenance: Monitor engine health and detect potential problems early. Improved Performance: Optimize engine performance by ensuring proper compression. Cost-Effective: Avoid costly repairs by addressing issues promptly. FEATURES: Durable nickel-plated finish Flexible 10-inch hose Clear 2.5-inch gauge Multiple adapter sizes 12-inch flex hoses (standard and extra-length) Rugged hard case Repair parts kit