Should I use 40 1 or 50 1 fuel for a chainsaw?
For the Craftsman 358352680 gas chainsaw, we recommend 40:1 fuel mix because the operator’s manual specifies mixing 3.2 oz of 2-cycle air-cooled engine oil per 1 gallon of unleaded gasoline. Using 50:1 in this model can reduce lubrication and increase the risk of engine damage.
What to use for model 358352680
Follow the fuel instructions in the 358352680 operator’s manual. Use fresh, properly mixed fuel in an approved container.
- Mix unleaded gasoline with 2-cycle air-cooled engine oil (Craftsman oil is recommended in the manual)
- Use a 40:1 ratio (3.2 oz oil per 1 gallon gas)
- Do not use automotive oil or marine/boat oil
- Shake the container after adding oil to fully blend the mix
- Avoid storing mixed fuel for long periods; old fuel can cause hard starting and poor running
40:1 vs 50:1 at a glance
| Mix ratio | Oil per 1 gallon gas | Best for | Risk if used in this model |
|---|---|---|---|
| 40:1 | 3.2 oz | Craftsman 358352680 per manual | Correct lubrication level |
| 50:1 | 2.6 oz | Some other modern 2-cycle engines | Leaner on oil; can increase wear/scuffing |
If the saw is running poorly after a fuel change
If you accidentally ran 50:1 (or straight gas), switch back to 40:1 and check these common fuel-related items:
- Drain the tank and refill with fresh 40:1 mix
- Inspect/clean the fuel filter; replace if restricted using fuel filter 530095646
- Check for cracked or soft fuel lines; replace as needed with poulan lawn & garden equipment fuel line, small 530069247 or ayp lawn & garden equipment fuel line, large 530069216
- If it still runs rough, the carburetor may need service (diaphragms can stiffen with age)
For step-by-step repair help, use how to replace chainsaw fuel lines or tips for a hard to start chainsaw.
Why it matters
Two-cycle engines rely on the oil mixed in the fuel for lubrication. In the Craftsman 358352680, the 40:1 ratio is part of the engine’s design; using less oil than specified can accelerate wear on the piston and cylinder.
Last updated: January 2026
What are the most common issues with 358352680?
The most common problems we see on the Craftsman 358352680 gas chainsaw are fuel delivery issues (won’t start, stalls, runs rough), bar and chain problems (won’t oil, won’t tension, poor cutting), and starter or ignition faults. Many of these are fixed with basic maintenance and a few common replacement parts.
Common symptoms and what usually causes them
- Won’t start or hard to start: stale fuel mix, clogged fuel filter, cracked fuel line, carburetor diaphragm issues, weak spark
- Starts then dies or runs rough: air leak at carb gasket, dirty carb passages, restricted fuel flow
- Chain won’t move: worn clutch, damaged clutch drum, brake engaged, bar/chain binding
- Chain won’t oil: empty oil tank, plugged oil pickup, failing oil pump
- Recoil starter won’t pull or won’t rewind: broken recoil spring
Quick checks we recommend first
- Drain old fuel and refill with fresh, properly mixed 2-cycle fuel.
- Inspect fuel lines for soft spots, cracks, or loose connections; replace if suspect.
- Replace the in-tank filter if fuel flow looks weak.
- Confirm the chain brake is fully released and the chain spins freely by hand (with the engine off).
- Verify bar oil is flowing; look for a light oil line on cardboard after a brief run.
Parts that commonly solve these issues
| Problem area | Common fix | Example part for this model |
|---|---|---|
| Fuel delivery | Replace cracked line or clogged filter | Ayp lawn & garden equipment fuel line, large 530069216, fuel filter 530095646 |
| Carburetor | Rebuild or refresh gaskets/diaphragms | Ayp lawn & garden equipment engine carburetor rebuild kit 530069826 |
| Oiling system | Clear pickup or replace pump | Oil pump 530071259 |
| Starting | Replace recoil spring | Recoil spring 545008015 |
Why it matters
Fuel and oil problems on a gas chainsaw quickly turn into no-start conditions, poor performance, or bar and chain damage. Keeping the fuel system tight and the oiler working protects the engine, clutch, bar, and chain.
Helpful references
- Use the 358352680 owner’s manual for the correct fuel mix, bar oil guidance, and adjustment and maintenance intervals.
- For step-by-step troubleshooting, follow tips for a hard to start chainsaw.
Last updated: March 2026
Where is the model number on my Craftsman chainsaw?
On the Craftsman gas chainsaw model 358352680, the model number is typically printed on a decal or label on the saw body, most often on the side of the engine/motor housing. Check the rear and underside areas too, then copy every character exactly.
Where to look first on model 358352680
We recommend checking these common label locations in order:
- Side of the engine (cylinder) cover or motor housing
- Rear handle area or rear of the saw body
- Bottom of the saw body near the crankcase
- Near the bar mount or clutch cover area
- On a worn decal, sometimes under dirt or oil film
What the model number should look like
For this Craftsman saw, you may see the model formatted with or without a dot:
| You might see it as | It refers to |
|---|---|
| 358.352680 | Model 358352680 |
| 358352680 | Model 358352680 |
Tips to read the label accurately
- Wipe the label with a damp rag; avoid soaking it
- Use a flashlight at a low angle to make faded printing easier to see
- Write down the full model number and any extra numbers on the same decal
- Take a photo before the label wears further
Why it matters
We use the exact model number to match the correct parts diagrams and compatible replacement parts (for example, the correct chain, bar, fuel system parts, and carburetor components) for your Craftsman chainsaw.
For more model-specific identification and operating details, use the 358352680 operator's manual.
Last updated: January 2026





