1. Cyflwyniad a Chynnyrch Drosoddview
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.

Ffigur 1.1: Drosoddview 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. Gwybodaeth Diogelwch
Rhowch flaenoriaeth i ddiogelwch bob amser wrth ddefnyddio offer pŵer. Gall methu â dilyn y cyfarwyddiadau hyn arwain at anaf difrifol neu ddifrod i'r offeryn.
- Darllenwch y Llawlyfr: Deallwch yr holl gyfarwyddiadau a rhybuddion cyn gweithredu.
- Cyfarpar Diogelu Personol (PPE): Gwisgwch sbectol ddiogelwch, amddiffyniad clyw, a mwgwd llwch bob amser.
- Maes Gwaith: Keep the work area clean, well-lit, and free from obstructions. Ensure adequate ventilation.
- Diogelwch Trydanol: Ensure the power supply matches the tool's requirements (230V). Do not operate in damp neu amodau gwlyb.
- Diogelwch llafn: Ensure the blade is correctly installed and sharp. Never attempt to remove jammed material while the saw is running.
- Darn Gwaith Diogel: Bob amser clamp the workpiece firmly before cutting to prevent movement.
- Cynnal rheolaeth: Keep hands clear of the blade path. Use both hands to operate the saw when possible.
- Datgysylltwch pan nad yw'n cael ei ddefnyddio: Datgysylltwch y llif o'r cyflenwad pŵer cyn gwneud addasiadau, newid llafnau, neu wneud gwaith cynnal a chadw.
3. Cydrannau a Chynulliad
The Sealey SMS255 comes with essential components for immediate use and convenience.
Cydrannau wedi'u Cynnwys:
- Workpiece Clamp
- Dust Extraction Bag
- Cario Handle
- 60-tooth TCT Blade (pre-installed)
Gosodiad Cychwynnol:
- Dadbacio: Carefully remove the saw and all components from the packaging. Inspect for any shipping damage.
- Lleoliad: Place the saw on a stable, level workbench or stand. Ensure sufficient space for workpiece movement and safe operation.
- Attach Workpiece Clamp: Diogelwch y workpiece clamp to the saw table as shown in Figure 3.1. This clamp is crucial for holding material securely during cuts.
- Gosod Bag Llwch: Connect the dust extraction bag to the dust port. For optimal dust collection, consider connecting to an external dust extraction system.
- Cysylltiad Pwer: Connect the saw to a suitable 230V power outlet.

Figure 3.1: Workpiece clamp mewn defnydd.
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. Cyfarwyddiadau Gweithredu
Dilynwch y camau hyn i weithredu'ch llif mitre yn ddiogel ac yn effeithiol.
- Paratoi deunydd: 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.
- Addasu Ongl 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.
- Activating Laser and LED: The integrated laser guide and LED work light can be activated to assist with precise alignment and illumination of the cutting area.
- Gwneud Toriad:
- Hold the saw handle firmly.
- Press the trigger to start the motor and allow the blade to reach full speed.
- 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.
- Unwaith y bydd y toriad wedi'i gwblhau, rhyddhewch y sbardun a gadewch i'r llafn stopio'n llwyr cyn codi pen y llif.

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. cynnal
Regular maintenance ensures the longevity and optimal performance of your saw.
- Pŵer Datgysylltu: Always unplug the saw before performing any maintenance or cleaning.
- Glanhau: 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.
- Echdynnu Llwch: Regularly empty the dust extraction bag. If using an external system, ensure its filters are clean and connections are secure.
- Arolygiad Llafn: Periodically inspect the blade for sharpness, damage, or missing teeth. A dull blade can cause kickback and poor cut quality.
- Amnewid Llafn: 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.
- Iro: Keep the sliding rails clean and lightly lubricated to ensure smooth operation.

Figure 5.1: Dust extraction port.
Mae'r ddelwedd hon yn rhoi llun agos 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. Datrys Problemau
Mae'r adran hon yn mynd i'r afael â phroblemau cyffredin y gallech ddod ar eu traws gyda'ch llif mitre.
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Nid yw Saw yn dechrau. | Dim cyflenwad pŵer; switsh diffygiol; gorlwytho modur. | 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. |
| Llwch gormodol. | 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. manylebau
Detailed technical specifications for the Sealey SMS255 Double Sliding Compound Mitre Saw.
| Manyleb | Gwerth |
|---|---|
| Model Rhif. | SMS255 |
| Pŵer Modur | 1800W |
| Cyflenwad Cyftage | 230V |
| Maint Llafn | 250 x 3.2 x Ø30mm |
| Dim Cyflymder Llwyth | 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 |
| Pwysau Eitem | 15.5 kg (34.1 pwys) |
| Dimensiynau Cynnyrch (L x W x H) | 460 x 640 x 410 mm (18.11 x 25.2 x 16.14 modfedd) |
8. Gwarant a Chefnogaeth
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 websafle: www.sealey.co.uk





