Dolmar MS-260 U, MS-330 U, MS-430 U, MS-230 C, MS-260 C, MS-330 C User Manual (English)

Questions and Answers:

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bruizJul 30, 2025
Why won't my Dolmar MS-260 U, MS-330 U, MS-430 U, MS-230 C, MS-260 C, MS-330 C engine start?
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  mark09Jul 30, 2025
  If your Dolmar Brush Cutter engine won't start or struggles to start, several issues could be the cause. Check the STOP switch position, look for wiring faults or short circuits, and inspect the spark plug and connector for defects. A faulty ignition module could also be the culprit. Other potential issues include an incorrect choke position, a defective carburetor, a dirty suction head, or a bent or interrupted fuel supply line. Additionally, inspect the cylinder bottom gasket, crankshaft seals, cylinder, and piston rings for wear. Ensure the spark plug is properly sealed. Finally, a broken starter spring or broken parts inside the engine may be the reason.
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Richard FrankAug 9, 2025
What to do if my Dolmar Brush Cutter engine starts but dies immediately?
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  sullivandanielAug 10, 2025
  If your Dolmar Brush Cutter engine starts and then immediately dies, the issue may be due to an incorrect idle speed setting. Other potential causes include a dirty suction head or carburetor, a defective fuel tank vent, an interrupted fuel supply line, or a faulty cable or STOP switch.
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heather57Aug 20, 2025
Why is my Dolmar MS-260 U, MS-330 U, MS-430 U, MS-230 C, MS-260 C, MS-330 C having warm start problems?
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  owenskevinAug 20, 2025
  If you're experiencing warm start problems with your Dolmar Brush Cutter, it might be due to an incorrect carburetor setting.