Is 40 1 or 50 1 better for chainsaws?
For a Craftsman gas chainsaw like model 358351202, the “better” mix is the one the manufacturer specifies; 50:1 is common on many newer 2-cycle engines, while 40:1 adds more oil for extra lubrication but can increase smoke and carbon buildup. Confirm the exact ratio in the 358351202 owner's manual.
Quick comparison: 40:1 vs 50:1
| Mix ratio | Oil per 1 gallon gas | What you’ll typically notice | Best use case |
|---|---|---|---|
| 40:1 | 3.2 oz | More lubrication, more smoke, more deposits | Older engines, heavy cutting, hot/dusty use |
| 50:1 | 2.6 oz | Cleaner running, less smoke, less carbon | Most modern saws designed for 50:1 |
What we recommend for everyday use
- Use the ratio listed in the manual for 358351202.
- Use fresh, ethanol-free gas when possible.
- Use a quality 2-cycle oil rated for air-cooled engines.
- Mix in an approved fuel can; shake before each refill.
- Do not “guess” richer oil as a fix for a running problem; address fuel delivery or carburetion instead.
Why it matters
The fuel-oil ratio affects lubrication, combustion temperature, and carbon buildup. Too little oil can accelerate piston and crank bearing wear; too much oil can foul the spark arrestor, plug, and exhaust port, making the chainsaw harder to start and down on power.
If your saw is hard to start or runs rough
A mix ratio issue is only one possibility. These guides help you narrow it down:
Last updated: January 2026
What model number is the Craftsman 358351202 chainsaw?
The model number for this Craftsman gas chainsaw is 358351202. You’ll typically find this number on the saw’s model tag (often near the starter housing or rear handle) and it’s the best identifier to use when ordering parts like a fuel line, chain, or guide bar.
Where to find the model number on the saw
Look for a label or stamped tag and match it exactly to 358351202.
- Check the rear handle area near the throttle trigger
- Check the starter (recoil) housing side
- Look near the bar mount area (clutch cover side)
- Wipe off oil and sawdust; the tag is often dirty or faded
- Write down the full model number before ordering parts
For diagrams and model tag location details, use the 358351202 owner's manual.
Why the exact model number matters for parts
Craftsman chainsaws can look similar across multiple model series, but small differences affect fit and performance.
| What you’re doing | Why the model number matters | Example for this model |
|---|---|---|
| Ordering fuel system parts | Line sizes and routing vary | Ayp lawn & garden equipment fuel line, large 530069216 |
| Replacing cutting components | Bar and chain specs must match | Bar length and chain pitch/gauge must be correct |
| Troubleshooting running issues | Correct diagrams help identify assemblies | Carburetor, fuel line, and vent routing |
Quick tips when ordering parts for model 358351202
- Match the model number exactly: 358351202
- Use the parts diagram to confirm placement and quantity
- Replace related wear items together when practical (fuel line, clamps, tank vent)
- If the saw is hard to start after storage, start with fresh fuel mix and fuel delivery checks
A helpful walkthrough for starting problems is tips for a hard to start chainsaw.
Why it matters
Using the correct model number prevents wrong-part returns and helps ensure safe operation, proper chain fit, and reliable fuel delivery on your Craftsman chainsaw.
Last updated: January 2026
Where is the model number on a chainsaw?
On the Craftsman chainsaw model 358351202, the model number is typically printed on the saw’s identification label or ID tag on the housing. We recommend checking the areas near the rear handle, starter cover, or fuel tank where labels are commonly placed; confirm the exact location in the 358351202 owner's manual.
Common places to check on a gas chainsaw
Look for a printed label, stamped plate, or sticker on the body of the saw. The most common spots include:
- Near the rear handle or trigger handle area
- On the starter (recoil) housing side cover
- Around the fuel tank or oil tank area
- Under the top cover (near the air filter cover)
- Along the bottom of the saw body near the bar mount
What the ID label usually looks like
Most chainsaw ID labels include more than just the model number. You may see:
- Model number (for this saw: 358351202)
- Serial number
- Engine displacement or power info
- Safety certification markings
Quick ID tips (so you get the right parts)
If the label is dirty or faded, these steps help you read it accurately:
- Wipe the label with a dry rag first; avoid soaking it with solvent
- Use a flashlight at an angle to make faint printing easier to see
- Take a close-up photo and zoom in
- Write down the full model number exactly as shown (all digits)
Why it matters
We use the model number to match the correct Craftsman parts diagrams and compatible parts (for example, fuel system items like the ayp lawn & garden equipment fuel line, large 530069216). A single digit difference can change the bar/chain fit, carburetor setup, or fuel line routing.
| If you find this | Use it for |
|---|---|
| Model number | Selecting the correct parts list and diagrams |
| Serial number | Confirming production version when parts vary |
| Bar/chain markings | Matching replacement bar and chain sizes |
Last updated: January 2026





