My Petrol Chainsaw will not lubricate the chain

Quick Answer

If your petrol chainsaw is not lubricating the chain, the most common causes are incorrect oil, a blocked oil outlet, an empty oil tank, or a restricted oil flow setting. In most cases, the issue can be resolved by checking the oil type, clearing blockages, and confirming oil is reaching the bar during use.

Safety Notice

⚠️ Always switch off the chainsaw before carrying out any inspection or maintenance.

⚠️ Never operate the chainsaw without chain oil, as this can cause serious damage to the chain and guide bar.

Correct Chain Oil Information

Your chainsaw requires a lightweight chain lubricating oil.

Suitable oils:

• Standard chain oil
• SAE30 oil
• Automotive oils such as 5W30 or 10W30

Do not use:

• Thick or “extra-tacky” oils
• Anti-fling oils (especially in colder weather)

These can restrict oil flow and prevent proper lubrication.

Basic Checks

Before assuming a fault, check the following:

• Confirm you are using the correct chain oil
• Check the oil tank is filled
• Inspect the oil outlet for blockages
• Check for visible oil leaks
• Ensure the oil cap and filter are correctly fitted

How to Check Chain Oil Flow

To confirm the system is working:

1. Start the chainsaw
2. Run the chain at a medium speed
3. Hold the chainsaw safely towards a light surface (such as wood or cardboard)
4. Look for a light spray or oil trace

✔ If oil is visible, the system is working correctly
✖ If no oil is visible, continue with the checks below

Adjusting Oil Flow (If Applicable)

Some models allow oil flow adjustment.

To adjust:

1. Switch off the chainsaw
2. Locate the oil adjustment screw (usually underneath or near the clutch area)
3. Turn the screw slightly to increase or decrease oil flow
4. Restart the chainsaw and recheck oil delivery

Important Notes

• The oil tank should empty at a similar rate to the fuel tank
• Always refill chain oil when refuelling
• Keep the bar groove and oil port clean to prevent blockages

If the Problem Continues

If no oil is being delivered after completing all checks, there may be a blockage or a fault within the oil delivery system, such as:

• Blocked oil line
• Faulty oil pump
• Internal lubrication issue

If this happens, please contact our Technical Support Team for further assistance.

Frequently Asked Questions

Why is my chainsaw not oiling the chain?

This is usually caused by incorrect oil, blockages in the oil system, or an empty oil tank.

How often should I refill chain oil?

Every time you refuel the chainsaw.

What oil should I use?

Lightweight chain oil, SAE30, or automotive oils such as 5W30 or 10W30.

Can I use thick oil?

No. Thick oils can restrict flow and prevent proper lubrication.