- Accurately determines RPM on 2-cycle and 4-cycle single cylinder engines
- No direct connection required; just hold built-in antenna near spark plug
- Selector switch gives 0-3000 RPM low scale or 0-15,000 RPM high scale
- Solid state electronics
For Briggs & Stratton and Tecumseh engines Remove and install valve springs on most engines usi
SKU: 18-6684
Connect one end to coil, other end to spark plug Window allows you to see the amount of spark
SKU: 18-9632
Threaded for hands-free operation 2-3/4” dial reads 0-200 PSI Fits 14mm and 18mm spark plug holes 3
SKU: 18-4212
Designed exclusively for small engine repair Connect spark plug lead to tester and clip tester to g
SKU: 18-0120
For Briggs & Stratton engines. Shearable aluminum key minimizes engine damage when engine stops
SKU: 18-0220