Owner’s manual
Do you use 40 1 or 50 1 gas in a chainsaw?
For the Craftsman chainsaw model 358351701, we use a 40:1 fuel mix: 3.2 fl oz of synthetic 2-cycle air-cooled engine oil per 1 gallon of unleaded gasoline. Using 50:1 in this model reduces lubrication and can accelerate engine wear.
Correct mix for Craftsman 358351701
Use these exact ratios when you mix fuel:
- 40:1 ratio (required for this model)
- 3.2 fl oz oil + 1 gallon gas
- Use unleaded gasoline
- Use a good quality synthetic 2-cycle air-cooled engine oil (Craftsman synthetic oil is recommended)
- Shake the fuel container after mixing so the oil disperses evenly
For the full fueling and safety steps, follow the 358351701 owner's manual.
Quick mix chart
| Gasoline amount | 40:1 oil amount | Notes |
|---|---|---|
| 1 gallon | 3.2 fl oz | Standard batch for most fuel cans |
| 1/2 gallon | 1.6 fl oz | Good for small jobs |
| 1 quart | 0.8 fl oz | Useful for a small mix bottle |
What happens if you run the wrong ratio?
Here is what we see most often on 2-cycle chainsaws:
- Too little oil (lean oil mix, such as 50:1 in a 40:1 saw): hotter running, faster piston and cylinder wear, scoring, and early failure
- Too much oil (richer oil mix than specified): more smoke, carbon buildup on the spark arrestor and muffler, and rough running
- Straight gasoline: immediate risk of severe engine damage
Why it matters
On a 2-cycle engine, the oil in the fuel is the primary lubrication for the crankshaft, piston, and cylinder. The 358351701 is designed around a 40:1 mix, so staying at 40:1 protects the engine while keeping starting and performance consistent.
Related DIY help
If your saw is hard to start after fueling, use tips for a hard to start chainsaw to check common causes like stale fuel, a dirty air filter, or carburetor issues.
Last updated: February 2026
Does a Craftsman chainsaw have a fuel filter?
Yes. Craftsman gas chainsaws such as model 358351701 use a fuel pickup filter inside the fuel tank to help keep debris out of the fuel lines and carburetor. Checking and replacing the filter is a normal maintenance step described in the 358351701 owner's manual.
Where the fuel filter is and what it does
The fuel filter typically:
- Sits on the end of the fuel line inside the fuel tank
- Filters fuel before it reaches the carburetor
- Helps prevent hard starting, surging, and stalling caused by restricted fuel flow
- Should be inspected when the saw has been stored with fuel or runs lean
Quick check: signs the fuel filter needs attention
Look for these common symptoms:
- Starts, then dies when you squeeze the throttle
- Runs rough or won’t accelerate cleanly
- Needs choke longer than normal to keep running
- Loses power under load
- Fuel line looks dry or you see debris in the tank
What to do (safe, basic steps)
- Let the saw cool completely and move to a well-ventilated area.
- Empty the fuel tank into an approved container.
- Use a clean wire hook or long needle-nose pliers to gently pull the fuel line and filter out of the tank opening.
- Replace the filter if it is clogged, brittle, or won’t pass fuel.
- Reinstall the line so the filter can move freely in the tank.
Related parts that often get replaced together
If you’re servicing the fuel system, these model-compatible parts are commonly replaced at the same time:
| Part | What it helps with | When to consider replacing |
|---|---|---|
| Ayp lawn & garden equipment fuel line, large 530069216 | Prevents air leaks and fuel starvation | Line is stiff, cracked, or swollen |
| Ayp chainsaw fuel line fitting 530023877 | Seals/joins fuel line routing | Fitting leaks or won’t seal |
| Fuel tank cap 580940901 | Maintains proper tank sealing/venting | Cap leaks, gasket damaged, vent issue |
Why it matters
A restricted fuel filter makes the carburetor run lean, which causes poor performance and can lead to overheating. Keeping the fuel system clean also supports proper 40:1 fuel mix operation and easier seasonal storage practices.
Last updated: February 2026
Where is the model number on Craftsman chainsaw?
On the Craftsman gas chainsaw model 358351701, the model number is printed on the product identification label. It is typically located on the engine housing (motor casing), often on a side surface, the rear area, or the underside. Confirm every character before ordering parts.
Where to look first
Check these common label locations on a Craftsman chainsaw:
- Side of the engine housing near the starter/recoil cover
- Rear of the saw body near the handle area
- Underside of the saw body near the oil and fuel tank area
- Near the bar mounting area (behind the clutch cover) if a label is used there
- On the operator information decal area (if your saw has multiple decals)
For diagrams and model identification details, use the 358351701 operator's manual.
What the model number looks like
Craftsman chainsaw model numbers are usually a series of digits with a dot in printed form.
| What you may see on the label | What to enter when searching parts |
|---|---|
| 358.351701 | 358351701 |
Tips to avoid ordering the wrong parts
- Write the model number exactly as shown (include any dots only if the label uses them).
- If the label is dirty, wipe it with a damp cloth and mild soap; dry it fully.
- Take a clear photo of the label before you start disassembly.
- Match the model number first, then confirm the part name and part ID when selecting parts.
Why it matters
Craftsman chainsaws can look similar across multiple model series, but parts like the carburetor, fuel line routing, chain brake components, and oil pump assemblies vary by model number. Using the correct model number helps ensure the parts list and diagrams match your exact saw.
Last updated: February 2026
