Chainsaw maintenance: the complete season-by-season guide

Why chainsaw maintenance is non-negotiable

A poorly maintained chainsaw is dangerous. Period. A dull chain that kicks back, a clogged air filter that stalls the engine mid-cut, a warped bar that binds — these are accidents that happen every year. Maintenance is safety before it's mechanics.

The interval table

Spring — start of season

After winter, your chainsaw needs a spring service:

1. Check the fuel — if you left mix in the tank, drain it. 2-stroke mix goes bad quickly (6-8 weeks max). Fill with fresh.
2. Clean or replace the air filter — remove it, tap gently, blow with compressed air (from inside out). If the felt is hard or greasy, replace.
3. Check the spark plug — electrode gap: 0.5 mm for most Stihl, 0.65 mm for Husqvarna. If the electrode is black and oily, clean or replace.
4. Sharpen the chain — even if it was sharp last fall, a touch-up never hurts.
5. Check tension — the chain should pull ~5 mm away from the bar, then snap back.

Summer — heavy use season

This is felling and bucking season. Routine maintenance is crucial:

• Sharpen often — a sharp chain cuts by itself. Once you have to push to make progress, it's too late. Chips should be proper chips, not dust.
• Flip the bar every 2-3 sharpenings to wear both sides evenly
• Clean the bar groove with a flat screwdriver — remove packed sawdust and resin
• Check chain oil flow — the chain must be lubricated constantly. Hold the bar over light cardboard and rev: you should see oil spray

Fall — last cuts

• Change the air filter if you haven't since spring
• Check the drive sprocket — if it shows pronounced grooves, replace it. A worn sprocket accelerates chain wear
• Clean the starter — remove the cover and clear sawdust around the flywheel

Winter — winterization

If your chainsaw will sit 2-3 months without running:

1. Drain the fuel — run the engine until it stalls (empty tank)
2. Remove chain and bar — clean them, lightly oil the chain
3. Remove the spark plug and pour 1-2 ml of 2-stroke oil into the cylinder — pull the starter 2-3 times to distribute
4. Reinstall the spark plug without connecting the wire
5. Store in a dry place, away from humidity

NEVER leave mix sitting in the tank all winter — ethanol in the fuel attacks carburetor membranes and fuel lines.

Need help on a specific point? Ask your question on L'Atelier with your model — the assistant will give you sharpening angles, spark plug type and carburetor settings specific to your saw.