1. Okwu Mmalite na Product Overview
This manual provides comprehensive instructions for the safe and effective operation, maintenance, and troubleshooting of your Sealey SMS255 Double Sliding Compound Mitre Saw 250mm. Please read this manual thoroughly before initial use and retain it for future reference.
The Sealey SMS255 is a powerful 1800W compound mitre saw designed for precise cutting of wood and other specified materials. It features double slides for enhanced control, a 60-tooth TCT blade, and integrated work piece supports. For improved accuracy, the unit is equipped with an LED work light and a laser guide.

Nyocha 1.1: N'eluview of the Sealey SMS255 Double Sliding Compound Mitre Saw.
This image displays the complete Sealey SMS255 Double Sliding Compound Mitre Saw from a front-left perspective, showcasing its main components including the motor housing, blade guard, cutting table, and sliding rails.
2. Ozi nchekwa
Always prioritize safety when operating power tools. Failure to follow these instructions may result in serious injury or damage to the tool.
- Gụọ akwụkwọ ntuziaka a: Ghọta ntuziaka na ịdọ aka ná ntị niile tupu arụ ọrụ.
- Ngwa nchekwa nkeonwe (PPE): Yiri ugegbe nchekwa mgbe niile, nchebe ịnụ ihe, na ihe mkpuchi uzuzu.
- Mpaghara ọrụ: Debe ebe a na-arụ ọrụ ọcha, nwee ọkụ nke ọma, na enweghị ihe mgbochi. Gbaa mbọ hụ na ikuku ikuku zuru oke.
- Nchekwa Eletriki: Ensure the power supply matches the tool's requirements (230V). Do not operate in damp ma ọ bụ ọnọdụ mmiri.
- Nchekwa agụba: Ensure the blade is correctly installed and sharp. Never attempt to remove jammed material while the saw is running.
- Ihe eji arụ ọrụ echedoro: Mgbe niile clamp the workpiece firmly before cutting to prevent movement.
- Jikwaa njikwa: Keep hands clear of the blade path. Use both hands to operate the saw when possible.
- Kpupu mgbe ejighi ya: Disconnect the saw from the power supply before making adjustments, changing blades, or performing maintenance.
3. Akụkụ na Mgbakọ
The Sealey SMS255 comes with essential components for immediate use and convenience.
Ngwa gụnyere:
- Ihe eji arụ ọrụ Clamp
- Dust Extraction Bag
- Ibu Aka
- 60-tooth TCT Blade (pre-installed)
Ntọala izizi:
- Iwepu: Carefully remove the saw and all components from the packaging. Inspect for any shipping damage.
- Ndokwa: Place the saw on a stable, level workbench or stand. Ensure sufficient space for workpiece movement and safe operation.
- Attach Workpiece Clamp: Chekwaa workpiece clamp to the saw table as shown in Figure 3.1. This clamp is crucial for holding material securely during cuts.
- Wụnye akpa uzuzu: Connect the dust extraction bag to the dust port. For optimal dust collection, consider connecting to an external dust extraction system.
- Njikọ ike: Connect the saw to a suitable 230V power outlet.

Figure 3.1: Workpiece clamp eji.
This image shows a close-up of the workpiece clamp holding a piece of wood firmly against the saw's fence, demonstrating its function in securing material for accurate and safe cutting.
4. Ntuziaka ọrụ
Follow these steps for safe and effective operation of your mitre saw.
- Nkwadebe ihe: Ensure the workpiece is free of nails, screws, or other foreign objects that could damage the blade.
- Adjusting Mitre Angle: Loosen the mitre lock handle and pivot the turntable to the desired angle. The saw features locking increments at 0°, 15°, 22.5°, 30°, and 45° Left & Right. Securely tighten the handle.
- Na-emezi akụkụ Bevel: For bevel cuts, adjust the saw head tilt to the desired angle (up to 45°). Lock the bevel adjustment securely.
- Positioning Workpiece: Place the workpiece firmly against the fence and secure it with the workpiece clamp. Ensure the cutting line aligns with the laser guide.
- Ịrụ ọrụ laser na LED: The integrated laser guide and LED work light can be activated to assist with precise alignment and illumination of the cutting area.
- Na-eme ịkpụ:
- Jide aka nkwọ ahụ nke ọma.
- Pịa ihe mkpali ahụ iji malite moto ahụ ma kwe ka agụba ahụ ruo ọsọ zuru oke.
- Slowly lower the saw head through the workpiece, applying steady, even pressure.
- For wider materials, utilize the double sliding feature by pulling the saw head forward, lowering the blade, and pushing it back through the material. The slides can be locked at different lengths for greater control.
- Ozugbo e gbubiri ya, hapụ ihe mkpali ahụ ma kwe ka agụba ahụ kwụsị kpamkpam tupu e bulie isi osisi ahụ elu.

Figure 4.1: Saw in operation, cutting wood.
This image captures the Sealey SMS255 mitre saw in action, with the blade descending through a wooden workpiece, illustrating the cutting process.
5. Nlekọta
Regular maintenance ensures the longevity and optimal performance of your saw.
- Kwụpụ ike: Always unplug the saw before performing any maintenance or cleaning.
- Nhicha: After each use, clean dust and debris from the saw, especially around the blade guard, motor vents, and sliding rails. Use a brush or compressed air.
- Mwepụta uzuzu: Regularly empty the dust extraction bag. If using an external system, ensure its filters are clean and connections are secure.
- Nyocha agụba: Periodically inspect the blade for sharpness, damage, or missing teeth. A dull blade can cause kickback and poor cut quality.
- Ndochi agụba: When replacing the blade, ensure the new blade is compatible (250 x 3.2 x Ø30mm) and installed with the correct rotation direction. Model No. SMS255B multipurpose blade is available for mild steel, aluminium, and wood with nails.
- mmanu mmanu: Keep the sliding rails clean and lightly lubricated to ensure smooth operation.

Figure 5.1: Dust extraction port.
Ihe onyonyo a na-enye nso nso view of the dust extraction port on the Sealey SMS255, highlighting the connection point for the dust bag or an external dust collection system.
6. Nchọpụta nsogbu
This section addresses common issues you might encounter with your mitre saw.
| Nsogbu | Ihe nwere ike ime | Ngwọta |
|---|---|---|
| Saw anaghị amalite. | Enweghị ọkụ ọkụ; mgba ọkụ na-ezighi ezi; oke moto. | Check power connection and circuit breaker. Ensure switch is fully depressed. Allow motor to cool if overheated. |
| Poor cut quality (rough, splintering). | Dull or incorrect blade; workpiece not secured; incorrect cutting technique. | Replace blade if dull or damaged. Ensure workpiece is clamped firmly. Use steady, even pressure and allow blade to reach full speed. |
| Oké ájá. | Dust bag full or improperly attached; dust port clogged. | Empty dust bag. Check and clear any blockages in the dust port. Ensure dust bag is securely attached. |
| Blade binds or stalls. | Workpiece not supported; dull blade; forcing the cut. | Ensure workpiece is fully supported. Replace dull blade. Do not force the saw; let the blade do the work. |
7. Nkọwapụta
Detailed technical specifications for the Sealey SMS255 Double Sliding Compound Mitre Saw.
| Nkọwapụta | Uru |
|---|---|
| Ụdị No. | SMS255 |
| Ike moto | 1800W |
| Tụkwasịnụ Voltage | 230V |
| Nha agụba | 250 x 3.2 x Ø30mm |
| Enweghị Ọsọ ibu | 4500rpm |
| Mitre Stop Increments | 0°, 15°, 22.5°, 30°, 45° Left & Right |
| Cross Cut (0° Bevel x 0° Table) | 85 x 310mm |
| Mitre Cut (0° Bevel x 45° Table) | 85 x 215mm |
| Bevel Cut (45° Bevel x 45° Table) | 50 x 215mm |
| Dust Extraction Port (ID/OD) | Ø35/Ø43mm |
| Ibu Ibu | 15.5 n'arọ (34.1 lbs) |
| Akụkụ ngwaahịa (L x W x H) | 460 x 640 x 410 mm (18.11 x 25.2 x 16.14 inch) |
8. Akwụkwọ ikike na nkwado
Your Sealey SMS255 Double Sliding Compound Mitre Saw is covered by a limited warranty. Please refer to the warranty card included with your product for specific terms and conditions.
For technical support, spare parts, or warranty claims, please contact Sealey customer service or your authorized Sealey dealer. Ensure you have your model number (SMS255) and purchase details available when contacting support.
For more information, visit the official Sealey websaịtị: www.sealey.co.uk





