Product description
The CMR7H spark plug is a common type of spark plug used in small engines, particularly in chainsaws, string trimmers, blowers, and other two-stroke or small four-stroke engines. It is manufactured by NGK, a leading brand in spark plug production.
Here are its key specifications:
Thread reach: 12.7 mm (1/2 inch)
Hex size: 16 mm (5/8 inch)
Heat range: 7 (medium heat range)
Electrode gap: Typically 0.6–0.7 mm (check the equipment manual for exact specs)
Resistor type: Yes, it includes a resistor to reduce electromagnetic interference (EMI).
The CMR7H is compatible with brands like:
Stihl (e.g., chainsaws and trimmers)
When replacing or maintaining, always refer to your equipment's manual to confirm compatibility and proper gapping.