The Makita SG1251J/2 is a 240 volt 125mm wall chaser with a powerful 1,400 watt motor, cutting dep...The Makita SG1251J/2 is a 240 volt 125mm wall chaser with a powerful 1,400 watt motor, cutting depth of 0-30mm and Super Joint System. It is ergonomically designed for comfort and features an improved trigger switch with a dust cover to prevent ingress of dirt and dust. The aluminium blade case allows for easy blade replacement and cutting depth adjustment. It also offers adjustable width and cutting depth, SJS system to prevent motor burn out, rubberised soft grip, connectivity to dust extractors, double insulation, soft start, and constant speed control. An electronic current limiter provides overload protection.
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Product Information
Full details
This guide is for professionals and DIY enthusiasts looking to efficiently create clean channels in walls for wiring or pipes using the Makita SG1251J/2 wall chaser. The primary benefit is its ability to make precise, clean cuts with minimal dust. However, users should be aware of the 1400W power requirement and the need for appropriate safety gear. This guide covers key features, practical usage, setup, maintenance, and troubleshooting to help you get the most out of your Makita wall chaser.
All features
Model Part Number
SG1251J
Brand
Makita
Extended Product Information
FAQs
What type of blades does the Makita SG1251J use?
The SG1251J uses 125mm diameter blades.
What is the maximum cutting depth?
The maximum cutting depth is 30mm.
Does the tool come with a dust extractor?
No, the dust extractor is sold separately, but the tool is designed to connect to one.
What safety precautions should I take?
Always wear eye protection and a dust mask. Use appropriate work gloves. Ensure the work area is well-ventilated.
How do I adjust the cutting width?
The cutting width can be adjusted using the appropriate controls on the tool; refer to the user manual for specific instructions.
What is the SJS system?
The Super Joint System (SJS) is a mechanism designed to protect the motor from burnout by absorbing vibration and reducing the impact on the motor.
How often should I replace the blades?
Blade replacement frequency depends on usage and the materials being cut. Inspect the blades regularly for wear and tear, and replace them when they become dull or damaged.
Troubleshooting
Wall chaser does not start.
Check the power supply and ensure the power cord is securely connected. Check the fuse or circuit breaker.
Cuts are not clean or precise.
Ensure the blades are sharp and correctly installed. Adjust the cutting depth and width settings as needed. Check for any obstructions.
Excessive dust emission.
Verify the dust extraction system is properly connected and functioning. Check for any clogs in the dust extraction hose or the tool's dust port.
Motor stops during operation.
Allow the motor to cool down. Check for overloading and reduce the cutting depth if necessary. The SJS system may have been triggered to prevent motor burnout.
Pros and Cons
Pros
Efficiently creates clean channels in walls.
Adjustable cutting depth and width for versatility.
Dust extraction compatibility minimizes mess.
Soft start and constant speed control enhance usability.
SJS system protects the motor from damage.
Ergonomic design promotes user comfort.
Cons
Requires a 240V power supply.
May require additional dust extraction equipment.
Can be heavy at 4.5 kg, potentially causing fatigue during extended use.
Blades will eventually need replacement.
Requires careful handling to ensure safety.
Setup, Compatibility & Care
Setup:
Ensure the power switch is in the off position before plugging it in.
Install the appropriate blade(s) for your desired channel width and depth. Consult the manual for detailed instructions.
Connect the dust extractor hose to the designated port.
Compatibility:
The SG1251J is designed for use with 125mm diameter blades.
It's compatible with standard 240V power outlets.
Ensure you use a dust extractor with sufficient capacity for the amount of dust generated.
Care:
Always unplug the tool before performing any maintenance.
Clean the tool after each use with a damp cloth.
Regularly inspect the blades for wear and replace them when necessary.
Check and clean the dust extraction system to maintain optimal performance.