Adjusting Chain Tension; Maintenance And Servicing - Sealey SV20 Series Manual

4.4.6. Turn the tension ring (fig.9) clockwise and check the chain tension by pulling the chain away from the guide bar (fig.10).
NOTE: The chain is sharp. Wear suitable gloves while doing this.
4.4.7. Keep turning the tension ring clockwise. To check the suitable saw chain tension, pull the saw chain away from the guide bar using
force of about 1kg.
4.4.8. The optimum gap at this stage is between 5-7mm (fig.10) between the saw chain and guide bar.
4.4.9. Turn the lever (fig.11) clockwise until the sprocket cover is secured then return it to the original position.
4.5.

ADJUSTING CHAIN TENSION

WARNING!: Remove batteries before working on saw.
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WARNING!: Carry out procedure of installing / removing saw chain in a clean place free from sawdust / possible contaminants i.e. oil.
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WARNING!: DO NOT over-tighten the saw chain. Excessively high tension of saw chain may cause breakage of saw chain, wear of
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the guide bar and breakage of the adjusting dial. refer to Section 4.4 for guidance.
WARNING!: A chain which is too loose can jump off the bar and it may cause an injury.
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WARNING!: The saw chain may become loose after many hours of use. From time to time check the saw chain tension before use.
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4.5.1. Pull the lever up while pressing its edge. Turn it counter-clockwise a little bit to loosen sprocket cover slightly.
4.5.2. Turn the tension ring clockwise to tighten the saw chain until the lower side of the saw chain fits in the guide bar rail as illustrated.
4.5.3. Keep holding the guide bar lightly and turn the lever clockwise until the sprocket cover is secured.
4.5.4. Return the lever to the original position.
4.6. LUBRICATION
WARNING!: Remove batteries before working on saw.
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NOTE: Use only good quality chain saw oil. See www.sealey.co.uk for further information.
NOTE:
Check oil level before and during every use. Running with little or no oil will damage the tool.
4.6.1. Saw chain is automatically lubricated when the tool is in operation.
4.6.2. Check the amount of remaining oil in the oil tank periodically through the transparent oil tank window (fig.2.14).
4.6.3. To refill the tank, lay the chain saw on its side, pull up the lever and turn anticlockwise to remove the oil tank cap (fig.2.13).
4.6.4. The oil tank capacity is 160ml. After refilling the tank, make sure that the oil tank cap is tightened.

5. MAINTENANCE AND SERVICING

WARNING:! Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection
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or maintenance.
NOTE: Always wear gloves when performing any inspection or maintenance.
NOTE:
Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of
the power tool is maintained.
NOTE:
Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorised service
providers.
5.1. CLEANING THE GUIDE BAR (fig.15)
5.1.1. Clean the guide bar whenever the saw chain is sharpened or replaced. See section 4.3, 4.4 for removal.
5.1.2. Chips and sawdust will build up in the guide bar groove. This may clog the bar groove and impair the oil flow. Clean out the chips and
sawdust every time when you sharpen or replace the saw chain.
5.2. CLEANING THE SPROCKET COVER (fig.16)
5.2.1. Chips and saw dust will accumulate inside of the sprocket cover. Remove the sprocket cover and saw chain from the tool then clean
the chips and saw dust. See section 4.3, 4.4 for removal.
5.3. CLEANING THE OIL DISCHARGE HOLE (fig.17)
5.3.1. Small dust or particles may be built up in the oil discharge hole during operation. These dust or particles may impair the oil to flow
and cause an insufficient lubrication on the whole saw chain. When a poor chain oil delivery occurs at the top of guide bar, clean the oil
discharge hole as follows.
5.3.2. Remove the sprocket cover and saw chain from the tool. See section 4.3, 4.4 for removal.
5.3.3. Remove the small dust or particles using a slotted screwdriver with a slender shaft or the like.
© Jack Sealey Limited
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Original Language Version
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CP40VCS
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Issue 2 11/01/2024