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Susan HarperAug 27, 2025
What to do if my Grizzly BHS 25 L engine outputs less than maximum?
- CChad HayesAug 27, 2025
If your Grizzly Trimmer engine is outputting less than maximum power, start by checking the spark plug. It might be clogged or have the wrong spark gap, so clean, adjust, or replace it. The carburetor or nozzles could also be dirty, or the fuel-air mixture might be badly set, requiring professional cleaning and adjustment. Ensure you are using the correct fuel mixture by filling up according to the instructions. Other potential issues include a leaking O-ring in the crankcase, which requires professional repair, or worn-out cylinder and piston rings, or spark failure.
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