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James BowmanAug 21, 2025
What to do if LawnMaster NPTBSP2609A Brush Cutter engine will not start but spark plug fires?
- FfigueroadanAug 21, 2025
If your LawnMaster Brush Cutter engine doesn't start but the spark plug fires, it could be due to several reasons. There might be excess fuel inside the spark plug, in which case you should remove the spark plug, clip the fuel tube to stop fuel from entering, and press the start button to clear the fuel from the cylinder. The fuel could be contaminated with water, requiring you to replace it. Other potential causes include worn cylinder and piston ring (replace them), a loose spark plug (tighten it), air leakage in the crankcase or cylinder (replace the gasket), lack of fuel (add fuel), no fuel in the primer bulb (prime the bulb), failure to engage the choke (engage the choke), or a blocked fuel tank valve (remove the blockage).