Owner’s manual
Where is the model number on a chainsaw?
On the Craftsman 358350203 gas chainsaw, the model number is printed on the product identification label or ID tag on the saw body. We use that number to match the correct parts list and the correct manual for maintenance and repairs.
Where to look on the saw
Check these common label locations first (clean off oil and sawdust so the print is readable):
- On the starter housing (recoil starter cover) near the pull rope area
- On the rear handle area, near the throttle trigger or grip
- On the cylinder cover or side of the engine housing
- Near the fuel mix fill cap area (on the housing, not on the cap)
- On the underside of the saw body near the bar mount area
Quick tips to read the label correctly
Model tags can be scratched or stained; these steps usually make it readable:
- Wipe the area with a dry rag first, then a lightly damp rag
- Use a flashlight at a low angle to make faint printing stand out
- Take a close-up photo and zoom in to read worn characters
- Write down the full model number exactly as shown (for this saw: 358350203)
Why the model number matters
Craftsman chainsaws can use different chain brake, clutch, and fuel system parts even when they look similar. Using the exact model number helps us match the right diagrams and parts, such as the air filter 545057701 or the correct chain and bar setup.
What you can confirm in the manual
The 358350203 owner's manual identifies this saw as model 358.350203 and describes key components (ON/STOP switch, chain brake, choke/fast idle lever) that help you verify you are working on the correct unit.
| What to record | Example for this saw | Why we need it |
|---|---|---|
| Model number | 358350203 | Matches the correct parts diagrams |
| Brand | Craftsman | Narrows compatible parts |
| Product type | Gas chainsaw | Confirms fuel and ignition system type |
Last updated: January 2026
How to look up chainsaw serial number?
On the Craftsman chainsaw model 358350203, the serial number is typically stamped into the engine area on a flat spot of the motor housing or crankcase, usually near the muffler. Use that serial number when ordering parts or checking service history.
Where to look on model 358350203
Check these common serial-number locations first:
- On the crankcase or motor housing on a flat machined surface
- Left or right of the muffler when looking down from the top
- Near the starter/recoil housing area (close to the engine)
- On a decal or tag on the chassis (less common than a stamped number)
If the area is oily or dusty, wipe it clean and use a flashlight; stamped numbers can be shallow.
Quick steps to find it safely
- Turn the ON/STOP switch to STOP and let the saw cool.
- Remove the top cover if needed (follow the fastener locations in the 358350203 owner's manual).
- Look for a stamped number on the crankcase near the muffler.
- Write it down exactly as shown (include any letters, dashes, or leading zeros).
Serial number vs. model number
Use this table to avoid mix-ups when you are looking up parts.
| Item | What it identifies | Example format | Used for |
|---|---|---|---|
| Model number | The chainsaw design/version | 358350203 | Correct parts diagrams and part fit |
| Serial number | Your specific unit | Varies by unit | Production run details, service tracking |
Why it matters
The serial number helps confirm the exact production run of your Craftsman chainsaw, which can matter when parts changed mid-production (for example, ignition or fuel system components).
Last updated: January 2026
Should I use 40 1 or 50 1 fuel for a chainsaw?
For the Craftsman 358350203 gas chainsaw, we use a 40:1 fuel mix (3.2 oz of quality synthetic 2-cycle air-cooled engine oil per 1 gallon of unleaded gasoline). That 40:1 ratio is the correct spec for this model and helps protect the engine under load; see the 358350203 owner's manual.
Correct fuel mix for model 358350203
Use this ratio every time you mix fuel:
- 40:1 gas-to-oil ratio
- 3.2 oz oil per 1 gallon of unleaded gasoline
- Use synthetic 2-cycle air-cooled engine oil (Craftsman synthetic oil is recommended in the manual)
- Mix fuel outdoors in an approved, marked fuel container
- Move the saw at least 10 ft (3 m) away from the fueling area before starting
Quick mix chart
| Gasoline amount | 40:1 oil amount | Notes |
|---|---|---|
| 1 gallon | 3.2 oz | Standard mix for this model |
| 1/2 gallon | 1.6 oz | Useful for small batches |
| 1 quart | 0.8 oz | Good for test runs or short jobs |
What happens if you run 50:1 in this saw?
A 50:1 mix contains less oil than 40:1. In a chainsaw designed for 40:1, that can reduce lubrication and increase wear, especially during hot weather, long cuts, or when the chain is dull and the engine is working harder.
Related maintenance that protects the engine
Fuel mix is only part of keeping a 2-cycle chainsaw running right. We also recommend:
- Keep the air intake clean; replace a clogged filter with the air filter 545057701
- Use fresh, properly mixed fuel (avoid old fuel sitting more than 30 days without stabilizer)
- For storage, add fuel stabilizer and run the engine about 5 minutes after adding it
- Keep bar and chain lubrication topped off; the saw typically uses about one tank of bar oil per tank of fuel
Why it matters
The correct 40:1 mix keeps the piston, rings, and crank bearings properly lubricated. That reduces scoring, overheating, and hard-starting problems and helps your Craftsman chainsaw deliver full power safely.
Last updated: January 2026
