Craftsman 358798212 weed eater Parts

For the Craftsman 358798212 2-cycle 17-inch trimmer, we use fresh unleaded gasoline mixed with a high-quality 2-cycle air-cooled engine oil at 40:1 (that is 3.2 oz of oil per 1 gallon of gas). Details and safety steps are in the 358798212 operator's manual.

Fuel and oil mix you should use

• Gas type: Unleaded gasoline
• Oil type: 2-cycle air-cooled engine oil (Craftsman-branded oil is recommended)
• Mix ratio: 40:1
• Mix amount: 3.2 oz oil per 1 gallon gas
• Avoid: Automotive oil and boat (marine) oil (these can damage the engine)

Quick mix chart (40:1)

Gasoline amount	2-cycle oil to add	Notes
1 gallon	3.2 oz	Standard mix for this model
1/2 gallon	1.6 oz	Good for small batches
1 quart	0.8 oz	Useful for testing or short jobs

How to mix it correctly

• Use an approved fuel container.
• Add about half the gasoline first.
• Measure and add the 2-cycle oil.
• Add the remaining gasoline.
• Cap and shake briefly to fully blend.
• Mix only what you will use soon; 2-cycle fuel goes stale quickly.

Why it matters

A correct 40:1 mix keeps the 2-cycle engine properly lubricated. Too little oil can score the cylinder and piston; too much oil can foul the spark plug and cause heavy smoke, hard starting, and poor throttle response.

Last updated: February 2026

To replace the cutting line on your Craftsman 358798212 gas line trimmer, stop the engine, disconnect the spark plug wire, pull the spool off the trimmer head, then wind two 12.5 ft lengths of .080 in line onto the spool and reinstall it. See the 358798212 operator's manual for the exact spool steps and safety notes.

Before you start (safety and setup)

• Push and hold the STOP/OFF switch until the engine fully stops
• Disconnect the spark plug lead wire before working on the trimmer head
• Work on a clean bench so dirt does not get into the spool and hub
• Use only .080 in (2 mm) line; other sizes can feed poorly and create hazards

Step-by-step: replace the trimmer line

1. Remove the spool: Firmly pull on the tap button to remove the spool.
2. Clean the hub and spool: Wipe the entire surface so the line feeds smoothly.
3. Cut new line: Cut two pieces of line, 12.5 ft (3.8 m) each, .080 in diameter.
4. Anchor the line ends: Insert each line end about 1/2 in (1 cm) into the small holes inside the spool.
5. Wind evenly: Wind the line evenly and tightly in the direction of the arrows on the spool.
6. Set the retainers: Push the line into the notches, leaving 3 to 5 in (7 to 12 cm) unwound.
7. Reinstall: Put the spool back on, then reconnect the spark plug wire.

Quick specs for this model

Item	Craftsman 358798212 spec
Line diameter	.080 in (2 mm)
Line length to load	Two lengths of 12.5 ft
Typical feed method	Bump (tap head to advance)

Why it matters

Correct line diameter and even winding prevent tangles, poor bump-feed performance, and excessive wear on the trimmer head. Using the right .080 in line also helps the line advance consistently when you tap the head on grass.

Last updated: February 2026

The model number is 358.798212 (commonly written without the dot as 358798212) for this Craftsman gas line trimmer. You can confirm it on the product identification section of the 358798212 operator's manual.

Where to find the model number on the trimmer

You will typically see the model number on the model tag or label on the unit. Check these common spots:

• On the shaft/tube near the handle
• Near the engine housing or starter cover
• Around the fuel tank area
• On a label that also lists safety information
• In the manual cover page and parts list

Why the dot matters (358.798212 vs 358798212)

Both formats refer to the same Craftsman model. The operator's manual prints it with a dot, while parts lookups often remove punctuation.

You might see it as	What it means
358.798212	Printed model format used in the operator's manual
358798212	Common parts-lookup format used online

Why it matters when ordering parts

Using the exact model number helps us match the correct fuel system, ignition, and starter components for your Craftsman weed eater.

If you are troubleshooting a fuel issue on this model, these model-matched parts are commonly involved:

• Ayp lawn & garden equipment fuel line, large 530069216 (cracked or leaking line)
• Fuel filter 530095646 (restricted fuel flow)
• Line trimmer fuel tank cap 530014347 (venting problems that can starve fuel)
• Husqvarna lawn & garden equipment engine carburetor diaphragm and gasket kit 530069844 (hard starting, poor idle)

Last updated: February 2026

On the Craftsman 358798212 gas line trimmer, the operator’s manual does not list a fuel line diameter. For this type of 2-cycle trimmer, the correct fuel line size is the one that seals tightly on the tank grommet and carburetor fittings without kinking; use the parts list in the 358798212 operator’s manual to match the exact routing and pickup length.

How we size a trimmer fuel line correctly

A fuel line that is even slightly off-size can cause hard starting, fuel leaks, or a lean-running engine.

• Match the line to the inside diameter (ID) of the fittings first; then confirm the outside diameter (OD) fits the tank opening/grommet.
• Use fuel-rated small-engine line (not generic vinyl tubing).
• Replace the fuel filter at the same time if it is restricted or brittle.
• Cut the end square; avoid angled cuts that can leak.
• Route the line exactly like the factory setup to prevent pinching.

Recommended replacement part for this model

For the Craftsman 358798212, we recommend replacing the fuel line using the model-matched part rather than guessing by measurement.

What you need	When to replace	Model-matched option
Fuel line	Cracked, soft, leaking, or won’t stay on fittings	Ayp lawn & garden equipment fuel line, large 530069216
Fuel filter	Engine starves for fuel, filter looks dark or clogged	Fuel filter 530095646

Quick check: symptoms that point to the wrong size line

• Line slips off the carburetor nipple (ID too large)
• Line is extremely hard to push on (ID too small)
• Fuel seepage at the tank exit (OD too small for the seal)
• Line collapses when you throttle up (line too soft or kinked)

Why it matters

A properly sized fuel line keeps the 2-cycle engine supplied with a steady fuel mix. That prevents surging, stalling at full throttle, and premature carburetor diaphragm wear.

Last updated: February 2026