Small Engine Spark Tester THX823 Thexton

Features and Benefits

• Adjustable spark gap to determine strength of coil on most small engine applications
• Highlighted marks at 4 & 6mm for most common start & end locations
• Spark plug end fits securely onto spark plug for better connection than alligator clip
• Made in USA
• Patent Pending

This tool is designed to determine the strength of coils on small engines by adjusting the tester while the engine is running.