Should I use 40 1 or 50 1 fuel for a chainsaw?
For the Craftsman chainsaw model 358351142, use a 40:1 fuel-to-oil mix. The manual specifies mixing 3.2 oz of 2-cycle air-cooled engine oil per 1 gallon of unleaded gasoline; this provides the lubrication and cooling the engine is designed to run on. See the 358351142 owner's manual.
Correct mix for this model
Use these measurements when mixing fresh fuel:
- 40:1 ratio (gasoline:2-cycle oil)
- Use unleaded gasoline
- Use 2-cycle air-cooled engine oil (Craftsman oil is recommended)
- Do not use automotive oil or boat oil
- Mix in an approved fuel container; shake to blend before fueling
Quick mix table (40:1)
| Gasoline amount | 2-cycle oil to add |
|---|---|
| 1 gallon | 3.2 oz |
| 1/2 gallon | 1.6 oz |
| 1 quart | 0.8 oz |
What happens if you run 50:1 in a saw designed for 40:1?
Running 50:1 means less oil in the mix. In a chainsaw designed for 40:1, that can reduce lubrication and increase heat, which accelerates wear on internal engine parts.
Common symptoms of an incorrect mix include:
- Hard starting or poor idle
- Loss of power under load
- Excessive engine heat
- Spark plug fouling (more common with too much oil, not too little)
- Premature engine wear (more common with too little oil)
Why it matters
A 2-cycle chainsaw engine relies on the fuel mix for lubrication. Using the ratio specified for the Craftsman 358351142 protects the piston, rings, and crank bearings and helps the saw run at the correct operating temperature.
Related maintenance tip
If the saw is hard to start even with the correct 40:1 mix, follow the steps in tips for a hard to start chainsaw to check basics like fresh fuel, priming, and starting procedure.
Last updated: January 2026
Where is the model number on my Craftsman chainsaw?
On a Craftsman gas chainsaw like model 358351142, the model number is printed on an ID label attached to the saw’s housing. We typically see it on the engine/motor casing area, and it may be positioned where it stays readable but protected from debris.
Common places to check first
Look for a sticker or metal tag on the saw body (not on the bar or chain). Check these spots:
- Side of the engine/motor housing (near the starter cover)
- Rear handle area (near the trigger handle)
- Bottom of the saw body (underside of the fuel tank area)
- Near the muffler side (on the outer housing, not on the muffler)
- Around the bar mounting area (behind the clutch cover)
What the model number should look like
Your operator’s manual lists the model in a number format like 358.351142 (sometimes shown with a dot). When ordering parts, we recommend using the full model number exactly as printed on the label.
| Where you see it | Example | Use for parts lookup |
|---|---|---|
| On the ID label | 358351142 | Yes |
| In the manual | 358.351142 | Yes (same model, different formatting) |
Why it matters
The model number narrows your parts list to the correct bar size, chain type, and engine components (fuel line, carburetor parts, chain brake). That helps avoid ordering a similar-looking part that will not fit.
Helpful tip while you’re looking
If the label is dirty or oily:
- Wipe it with a dry rag first
- Use a small amount of mild cleaner on the rag (not sprayed directly on the label)
- Write the number down immediately, including any dots or extra digits
For diagrams and model identification details, use the 358351142 operator’s manual.
Last updated: January 2026
What model number is a Craftsman 16 36cc chainsaw?
For the Craftsman 36cc (2.2 cu. in.) gas chainsaw covered by this parts list, the model number is 358351142. This model can be set up with a 16-inch bar, so a “Craftsman 16-inch 36cc” saw can still be model 358351142; confirm on the ID tag and in the 358351142 owner's manual.
How to confirm the model number on your saw
Use the model/serial label on the saw, then match it to the manual and parts diagrams.
- Find the label near the rear handle, starter housing, or chassis
- Look for “Model No.” and record the full number (example: 358351142)
- Verify engine size is 36cc (2.2 cu. in.)
- Confirm your bar length (14-inch or 16-inch) by measuring the cutting length
- Use the model number when ordering parts such as a fuel line, primer bulb, or carburetor
Bar length vs model number (what’s typical)
This Craftsman series commonly uses different bar lengths on the same basic saw platform. For model 358351142, both 14-inch and 16-inch cutting setups are used depending on configuration.
| What you’re checking | What to look for | What it tells you |
|---|---|---|
| Model label | “Model No. 358351142” | Exact model for parts matching |
| Bar length | 16-inch cutting length | Confirms your bar/chain size, not a different engine |
| Parts fit | Bar and chain part IDs | Confirms compatible replacement parts |
Parts that commonly differ by bar length
If you are converting or replacing wear items, match the bar and chain to your setup.
- 16-inch bar option: bar - 16" 160SDEA041
- 14-inch bar option: Bar - 14" 140SDEA041
- 16-inch chain option: Chain - 16" 91PX056G
Why it matters
The model number controls parts compatibility for fuel system, ignition, and safety components. The bar and chain length control cutting performance and the exact bar and chain replacements you need.
Last updated: January 2026





