Makita PLM4631 - User Manual

Other manuals for Makita PLM4631

Questions and Answers

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Deborah SilvaAug 8, 2025
Why won't my Makita Lawn Mower start?
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  Jade TorresAug 8, 2025
  Your Makita Lawn Mower might not start due to several reasons. The throttle choke may not be in the correct position, so try adjusting it. The fuel tank could be empty, requiring a refill. A dirty air cleaner element can also prevent starting, so clean it. Other potential causes include a loose spark plug (tighten to 25-30 Nm), a disconnected spark plug wire (reinstall it), an incorrect spark plug gap (set it to 0.7 to 0.8 mm), or a defective spark plug (replace it). If the carburetor is flooded, remove the air cleaner element and pull the starter rope until it clears. Finally, a faulty ignition module could be the issue, in which case you should contact a service agent.
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smithkarenAug 13, 2025
What to do if my Makita PLM4631 engine is hard to start or loses power?
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  Amanda MartinezAug 13, 2025
  If your Makita Lawn Mower engine is difficult to start or loses power, consider these possibilities: the fuel tank may contain dirt, water, or stale fuel, so drain the fuel, clean the tank, and refill with fresh fuel. The vent hole in the fuel tank cap could be plugged, so clean or replace the cap. Also, a dirty air cleaner element can cause these issues, so clean it.
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Melanie ValenzuelaAug 17, 2025
How to fix a Makita Lawn Mower engine that overheats?
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  mitchellallenAug 17, 2025
  If your Makita Lawn Mower engine is overheating, it could be due to restricted cooling airflow. Remove any debris from the slots in the shroud, blower housing, and air passages. Another cause might be an incorrect spark plug. For models PLM4630/PLM4631, install an RJ19LMC spark plug and cooling fins on the engine. For models PLM4632/PLM5130, install a QC12YC spark plug and cooling fins on the engine.
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smithryanAug 21, 2025
Why does my Makita Lawn Mower engine run erratically?
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  Tanya MiddletonAug 21, 2025
  An erratic engine operation in your Makita Lawn Mower can stem from a few issues. The spark plug might be defective, requiring replacement with a correctly gapped plug. An incorrect spark plug gap (should be 0.7 to 0.8 mm) can also cause this. Lastly, a dirty air cleaner element could be the culprit, so ensure it is cleaned.
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Teresa RamosAug 26, 2025
How to troubleshoot poor idling on a Makita PLM4631?
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  Wendy PetersonAug 26, 2025
  Poor idling in your Makita Lawn Mower may be due to a dirty air cleaner element, so ensure you clean it. Blocked air slots in the engine shroud can also cause this, so remove any debris. Similarly, obstructions in the cooling fins and air passages under the engine blower housing can lead to poor idling, so clear any debris from these areas.
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Brianna BrownAug 30, 2025
What causes abnormal vibration in my Makita PLM4631?
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  Carol SaundersAug 30, 2025
  Abnormal vibration in your Makita Lawn Mower could be due to a loose cutting assembly, so tighten the blade. Alternatively, the cutting assembly might be unbalanced, in which case you should balance the blade.
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Javier KellySep 3, 2025
What to do if Makita PLM4631 engine skips at high speed?
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  Jessica GriffinSep 3, 2025
  If your Makita Lawn Mower engine skips at high speed, the gap between the spark plug electrodes may be too close. Set the gap between the electrodes to 0.7 to 0.8 mm.