Product Parameters
| Specification Item | Description |
|---|---|
| Part Number / Service Number | CMR5H / 7599 |
| Thread Size | 10mm |
| Thread Reach | 12.7mm (0.500 inch) |
| Hex Size | 16mm (5/8 inch) |
| Preset Gap | 0.028 inch (0.7mm) |
| Heat Range | 5 |
| Seat Type | Gasket / Flat seat |
| Resistor Type | Yes (10,000 Ohm) |
Product Description
Product Details
1. OEM-Recommended Heat Range
Heat range 5 ensures proper operating temperature for Honda GX35 and compatible engines, preventing fouling from cold running or pre-ignition from overheating .
2. Copper Core Center Electrode
98% pure copper core delivers superior heat dissipation for more reliable starts and reduces the risk of overheating under load .
3. Corrosion-Resistant Plating
Trivalent plating on the shell eliminates the need for anti-seize compound during installation and prevents seizing in the cylinder head .
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FAQ
Q1: What is the correct gap for the CMR5H spark plug?
A: The preset gap is 0.028 inch (0.7mm). Before installation, verify the gap and adjust if necessary using a gap tool. Never pry against the center electrode .
Q2: Is the CMR5H compatible with the MS382?
A: Yes, the CMR5H is compatible with MS382 and works with Honda GX25, GX35, HHT25S, HHT35S, UMC425A, UMC435A, and FG110 tillers .
Q3: Can I use a different spark plug instead of CMR5H?
A: The manufacturer warns that an incorrect spark plug can cause engine damage. Always use the recommended plug (CM5H or CMR5H from NGK) for the correct heat range .
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