Makita PLM4631N2 User Manual (English)

Other manuals for Makita PLM4631N2

Questions and Answers:

A
Amy LeonardAug 7, 2025
Why won't my Makita PLM4631N2 Lawn Mower start?
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  Matthew SalazarAug 7, 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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Megan AguirreAug 11, 2025
What to do if my Makita Lawn Mower engine is hard to start or loses power?
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  Megan HawkinsAug 11, 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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Charles HuynhAug 15, 2025
How to fix a Makita PLM4631N2 Lawn Mower engine that overheats?
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  Dwayne Gibson IIAug 15, 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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Michael KingAug 19, 2025
Why does my Makita PLM4631N2 engine run erratically?
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  shane85Aug 19, 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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hectorporterAug 25, 2025
How to troubleshoot poor idling on a Makita PLM4631N2?
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  jimenezcarlAug 25, 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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carlosmillerAug 28, 2025
What causes abnormal vibration in my Makita Lawn Mower?
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  christian74Aug 28, 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.
D
Derrick PhillipsSep 1, 2025
What to do if Makita PLM4631N2 Lawn Mower engine skips at high speed?
- J
  Jennifer WhiteSep 1, 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.

Makita PLM4631N2 Specifications

General

Engine Type	4-stroke
Cutting Width	46 cm
Grass Collector Capacity	60 L
Power Source	Petrol
Battery Included	No
Charger Included	No
Cutting Height Adjustment	6 positions