How do I know what model McCulloch chainsaw I have?
To identify your Mcculloch chainsaw model, we look for the model identification stamp or tag on the saw body, then match that information to the correct parts list. On many older Mcculloch saws, the model is stamped into the crankcase area rather than printed on a large label.
Check these common locations (clean off oil and sawdust first):
- Underside of the crankcase (bottom of the saw body), where numbers may be stamped into the metal
- Near the bar mount studs and clutch cover area
- Starter housing area (recoil starter side)
- Rear handle or fuel tank housing for a small ID tag or decal
- Around the muffler side for stamped codes
When you find markings, record them exactly as shown. For Mcculloch chainsaws, any of these can help narrow the match:
- Model name/series (example: “PRO MAC 320”)
- PROduct number or type code (often a longer number with dashes)
- Serial number
- Any stamped case numbers (even if they do not look like a model)
Use the markings you found to select the closest match, then confirm by comparing what you see on the saw (handle style, chain brake style, bar mount pattern, carburetor layout) to the diagrams.
| What you found | How to use it | Why it helps |
|---|---|---|
| Clear model name (PRO MAC 320) | Match by model name first | Fastest way to get correct diagrams |
| Long number with dashes | Treat it like a PROduct/type number | Often identifies a specific version |
| Only stamped case numbers | Use them to narrow down similar models | Common on older saws |
Mcculloch often made multiple versions of the “same” saw family. Getting the exact model and version prevents ordering the wrong ignition parts, carburetor parts, fuel lines, or bar and chain components.
If the saw is dirty, hard to start, or has been sitting, basic troubleshooting can help you confirm what system you are working with (fuel delivery vs. ignition). Use our DIY guide: tips for a hard to start chainsaw.
Last updated: February 2026
How many cc's is a McCulloch PRO chainsaw?
Engine size (cc) depends on the exact Mcculloch model, not just the word “PRO”. For the Mcculloch chainsaw model PRO shown on this page, the cc rating varies by the specific PRO Mac version and its engine family, so we recommend confirming it by matching your saw’s full model tag to the parts diagrams and specs in our DIY resources.
Use these quick checks on your Mcculloch chainsaw before you buy parts or tune the carburetor:
- Look for the full model and type numbers on the starter housing, rear handle, or crankcase (often more than just “PRO”).
- Check for a PRO Mac series name (for example, “PRO Mac 320” vs “PRO Mac 610”); those are different saws with different displacements.
- Compare your saw’s air filter cover, recoil starter, and muffler shape to the illustrated parts breakdowns.
- If the cylinder has a stamped displacement marking, record it exactly.
- Avoid using bar length (like 16-inch or 20-inch) to guess cc; bars are commonly swapped.
Most gas chainsaws in this class fall into these general ranges:
| Chainsaw use | Typical engine size | Typical bar range |
|---|---|---|
| Light homeowner trimming | 30 to 40 cc | 12 to 16 in. |
| General firewood and storm cleanup | 40 to 55 cc | 16 to 20 in. |
| Heavy cutting | 55 to 70+ cc | 20 to 28+ in. |
The correct cc helps you choose the right spark plug heat range, carburetor settings approach, and bar/chain match. It also prevents ordering the wrong fuel system or ignition parts when troubleshooting hard starting, rough running, or stalling.
If you are asking about cc because the saw will not start or runs poorly, these guides help you narrow it down fast:
Last updated: February 2026
How old is a McCulloch PRO?
A Mcculloch PRO chainsaw is not one single, dateable model; “PRO” is used across multiple Mcculloch PROfessional-grade saws and model families. To estimate age, we match the full model tag (for example, “PRO MAC 320 600021-03”) to its PROduction era using model-family clues and parts-compatibility.
Use the complete identification information from the saw (usually on the starter housing or crankcase) and compare it to known Mcculloch model families.
- Write down the full model name and suffix (example: PRO MAC 320 600021-03)
- Record any serial number and any “type” or “revision” code
- Note whether it is a gas 2-cycle saw and whether it uses a primer bulb
- Check whether the chain brake is inertia style (common on later saws)
- Compare your findings to model-family references and parts diagrams
“PRO” commonly indicates a PROfessional line, but the age depends on the specific PRO-SERIES family.
| What you have | What it usually indicates | What to do next |
|---|---|---|
| “PRO” only | A line/series label, not a date | Identify the full model and serial |
| “PRO MAC” in the name | A specific Mcculloch family name | Use the full suffix to narrow the era |
| A long suffix like “600021-03” | A revision/variant identifier | Use it to match the exact variant |
Age affects the correct carburetor settings, fuel line routing, bar and chain fit, and which ignition or oiling parts interchange. Getting the exact variant prevents ordering the wrong parts and helps troubleshooting (hard start, rough running, fuel leaks).
If you are trying to get the saw running while you research the exact year, these checks solve the most common PRO-SERIES issues:
- Drain old fuel; refill with fresh, PROperly mixed 2-cycle fuel
- Inspect the fuel lines and fuel filter for cracking or soft spots
- Clean or replace the air filter
- Check spark plug condition and gap
- If it starts then dies, focus on carburetor and fuel delivery
For step-by-step repair help, use our DIY guides like tips for a hard to start chainsaw and chainsaw care and troubleshooting tips.
Last updated: February 2026
