1. Test the trigger
Sharpen the chainsaw chain Check your trigger before each use to make sure it operates smoothly. If the oil trigger sticks, or if the engine does not return to idle when the trigger is released, take the saw to a service center for inspection.
2. Keep the gear assembly clean
Check the saw's motor start gear assembly before each use. If it is dirty, clean it out and let it dry before reinserting it into the saw. If it is damaged or excessively dirty, replace the gear assembly with a new one.
3. Turning the saw blade
For more even wear on the chainsaw blade, rotate the blade before each use. Clean the saw blade slot to prevent excessive wear and make sure it is not clogged with anything.
4. Check the sprocket/tighten and sharpen the chain
Check the drive sprocket for wear. If there is obvious wear, replace it.
Sharpen the chain, check its condition, and replace it if it is damaged. Check the tension of the chain to make sure it is not too loose, and tighten it if necessary.
5. Tighten any loose parts
Some screws, nuts or bolts may shake loose due to the vibration generated by the engine. Before each use, check the saw for loose parts and tighten them.
One particularly bad idea is the use of motor oil, especially old, used motor oil that has been drained from an engine:
- Motor oil is not the right viscosity for lubricating chains
- Debris contained in used motor oil can wear down the bar's groove and damage the chain
Finally, there are the detailed steps on how to use the oil jug
- Set your chainsaw on a level surface, bar side down so that it lays flat
- Allow a minute for the oil to settle, then unscrew the cap to the saw's bar and chain oil reservoir
- Using a small funnel, slowly pour the bar and chain oil into the reservoir, taking care not to overfill
- When it's full, firmly secure the cap and wipe down the surrounding area of any excess oil