Owner’s manual
What trimmer line does Craftsman use?
For the Craftsman electric line trimmer model 358799080, we use .065-inch diameter trimmer line. The operator’s manual also specifies using only genuine trimmer line (never wire, rope, or string) to keep the semi-automatic head feeding correctly and to reduce breakage.
Correct line size for model 358799080
Use this specification when buying replacement line or re-spooling the head:
- Line diameter: .065 inch
- Line feed type: semi-automatic head
- Cutting path: 16 inches
- Power: 120V AC, 6.0 amps
For the exact wording and any accessory notes, check the owner's manual.
Why the diameter matters
Using the wrong diameter is one of the most common reasons a string trimmer will not feed line properly.
- Too thick: can jam the head, overload the motor, and stop line feed
- Too thin: breaks quickly and can feed inconsistently
- Wrong material (wire, rope, etc.): creates a serious safety hazard and can damage the head
Quick compatibility guide
| What you have | Will it work in 358799080? | What to do |
|---|---|---|
| .065 in line | Yes | Use it as specified |
| .080 in or .095 in line | No | Switch to .065 in |
| “Universal” line (unknown size) | Only if it is .065 in | Confirm diameter on the package |
Helpful tips for better feeding and cutting
- Unplug the trimmer before opening or servicing the head.
- Wind the line evenly and do not overfill the spool.
- Keep the head assembled and fasteners tight; replace cracked or chipped head parts.
- Trim with the head below waist level and keep guards installed.
- Clear the area of rocks, wire, and debris that can snag the line.
Why it matters
Correct .065-inch line helps the semi-automatic head feed smoothly, keeps the cutting path consistent, and reduces motor strain on your Craftsman 358799080.
Last updated: February 2026
How to extend Craftsman trimmer line?
To extend the line on your Craftsman 358799080 electric line trimmer, run the trimmer at full speed over grass and lightly tap the semi-automatic head on the ground one time; it advances about 1-1/2 to 3 inches per tap, and the line limiter trims it to the correct length. See the owner's manual for the exact operating steps and safety notes.
How to advance the line (semi-automatic head)
- Put on eye protection and keep bystanders away.
- Start the trimmer and let it reach full speed.
- Hold the head parallel to and just above a grassy area.
- Tap the head lightly on the ground one time.
- Repeat as needed; each tap advances a small amount of line.
- Let the shield’s line limiter cut the line to the proper length.
What not to do (prevents damage)
- Do not bump the head on abrasive surfaces like concrete, asphalt, or gravel.
- Do not force the line into heavy material; let the tip do the cutting.
- Do not lean over the head while it is spinning.
Quick reference: what to expect
| Action | What happens | What you should see |
|---|---|---|
| 1 light tap on grass | Line advances automatically | About 1-1/2 to 3 inches more line |
| Multiple taps | More line advances in steps | Line length stays capped by limiter |
| Line hits limiter | Excess line is trimmed | Even cutting diameter |
Why it matters
Using the semi-automatic feed correctly keeps the cutting path efficient (this model uses a 16-inch cutting path with 0.065-inch line) and reduces premature wear on the head, shield, and line limiter.
Last updated: February 2026
How to restring a Craftsman trimmer head?
To restring the semi-automatic head on your Craftsman 358799080 trimmer, use only .065-inch trimmer line and wind it tightly and evenly so it does not overlap. Correct routing and even winding prevent tangles, jams, and poor bump-feed performance (the head advances line when you tap it lightly on grass). See the owner's manual for the exact head steps and diagrams.
Quick restring steps (what works on this model)
- Unplug the trimmer and let the head stop completely.
- Remove the head cover and pull out the spool.
- Use .065-inch diameter line only (never wire, rope, or string).
- Wind the line tightly and evenly on the spool so there is no overlapping.
- Route the line through the outlet/eyelet(s) exactly as the head is designed.
- Reinstall the spool and cover; pull about 4 inches of line to the outside before final assembly.
How to avoid tangles and “won’t feed” problems
Most feed issues come from line size, winding, or routing. Use this checklist:
| Symptom | Most common cause | What to do |
|---|---|---|
| Line tangles or jams | Overlapping or loose winding | Rewind tightly and evenly; avoid crossing wraps |
| Line won’t advance | Line routed wrong in head | Remove cover and re-route line correctly |
| Line breaks too fast | Crowding line into material | Let the tip cut; do not force the head into weeds |
| Line too long | Line limiter not trimming | Inspect/replace the line limiter 530052287 if damaged |
Using the bump (tap) feed correctly
Your 358799080 uses a semi-automatic head that advances line when you tap it.
- Hold the spinning head parallel to and above grass.
- Tap the head lightly one time; it advances about 1-1/2 to 3 inches per tap.
- Do not bump on concrete, asphalt, or gravel; that causes excessive wear.
Why it matters
Correct line diameter (.065 inch), tight even winding, and proper routing keep the spool from binding. That protects the head parts, helps the line limiter cut to the right length, and keeps trimming smooth and consistent.
Last updated: February 2026
Where can I get Craftsman replacement parts?
You can get replacement parts for your Craftsman electric line trimmer model 358799080 directly from the parts list for this model, using the exact model number and the part description to match the correct fit. For part identification and safe handling details, use the owner's manual.
Best way to match the right part
Using the model number and the part details prevents ordering the wrong fastener or trimmer-head hardware.
- Confirm the model number 358799080 from the decal on the trimmer
- Use the part description (for example: screw, wing nut, clamp)
- Match the part ID and part number when available
- Replace damaged or missing fasteners before operating
- Keep people and pets at least 50 feet away when testing after a repair
Common replacement parts on this model
These are examples of parts we commonly see customers replace on the Craftsman 358799080:
| Part name | Part ID | Part number | Typical use |
|---|---|---|---|
| Screw 534222402 | 534222402 | 534-790301 | Secures housings/guards/attachments |
| Wing nut 530091373 | 530091373 | 530-016118 | Hand-tightened clamp or handle hardware |
| Clamp 530038599 | 530038599 | 530-038599 | Holds components in position |
| Line limiter 530052287 | 530052287 | 530-095238 | Helps control cutting line length |
Why it matters
A line trimmer that is missing a clamp, bolt, or screw can vibrate, loosen, or run unsafely. The manual also specifies using the correct cutting line size (commonly .065 inch for this unit) and keeping the head properly assembled and securely fastened.
Last updated: February 2026
Where is Craftsman's model number?
On the Craftsman electric line trimmer model 358799080, the model number is printed on a decal (label) attached to the trimmer. You can also find the serial number/date code on the upper part of the motor housing; both are listed in the owner's manual.
Where to look on the trimmer
Check these common label locations first:
- The motor housing (look around the upper housing and sides)
- Near the handle or shaft where a safety label is placed
- Around the guard area (near the cutting head)
- Any flat plastic surface where a decal can stick without bending
What you should write down (and why)
Recording the identification info helps us match the correct Craftsman parts and specs for your exact unit.
| Item | What it looks like | Where it’s found |
|---|---|---|
| Model number | 358.799080 (may include a dot) | Decal attached to the trimmer |
| Serial number/date code | Letters and numbers | Upper part of the motor housing |
| Purchase date | Your receipt date | Your records |
Tips if the decal is hard to read
If the label is worn, you can still usually confirm the model by cleaning the area and improving contrast.
- Unplug the trimmer before handling it
- Wipe the decal gently with a damp cloth and mild soap
- Use a flashlight at an angle to make faint printing stand out
- Take a close-up photo and zoom in
- Compare what you see to the model format shown in the manual (358.799080)
Why it matters
Craftsman trimmers often use similar-looking housings and guards across multiple models. The exact model number ensures you get the right replacement items (for example, a line limiter 530052287 or mounting hardware) and the correct operating specs.
Last updated: February 2026
