Craftsman 316791020 line trimmer Parts

Yes, you can use .095-inch trimmer line on many gas trimmers, including Craftsman model 316791020, as long as the cutting head and spool are rated for that diameter. For the best performance and to avoid feed problems, match the line size listed in the 316791020 owner's manual.

Quick fit check (what to confirm)

• The trimmer head or spool label lists 0.095 in as an approved diameter
• The line feeds smoothly when you bump the head (no sticking)
• The engine reaches full RPM without bogging down
• The guard and line cutter blade can trim .095 cleanly
• You are using the correct line type (round line feeds easier than aggressive shapes)

What changes when you go thicker

Thicker line can cut heavier weeds, but it also increases load on the engine and head. If .095 is larger than your head is designed for, you will usually see poor feeding, frequent line breaks, or the engine running rough.

Typical results by line diameter

Line diameter	Best for	Common downside if oversized
.080 in	light grass, edging	wears faster in thick weeds
.095 in	heavier grass, weeds	can reduce RPM and feed poorly
.105 in	very heavy trimming (only if rated)	often too large for many heads

If the trimmer runs rough after switching line

Use these steps in order:

• Remove the spool and rewind with less tension; avoid crossing wraps
• Clean debris from the head and eyelets
• Inspect the air filter; a clogged filter can make the engine struggle under load
• Check for fuel issues if it bogs under throttle

For symptom-based troubleshooting, use our line trimmer runs rough guide.

Why it matters

Using the correct line diameter helps the Craftsman 316791020 maintain proper RPM, reduces clutch and drive shaft stress, and keeps the bump-feed system working reliably.

If you need replacement parts while you are servicing the trimmer, you can order from the parts list for model 316791020 or search by model on Sears PartsDirect.

Last updated: February 2026

If your Craftsman 316791020 gas line trimmer is flooded, clear the excess fuel by stopping the choke, opening the throttle, and pulling the starter to move fresh air through the engine until it fires. Then let it warm up briefly before trimming.

Quick steps to unflood it

• Move the choke to OFF/RUN (no choke).
• Hold the throttle wide open (or set it to full throttle if your control has a lock).
• If your model has a primer bulb, do not press it while unflooding.
• Pull the starter rope in steady pulls until the engine sputters or starts.
• Once it starts, keep it running at a fast idle for 20 to 30 seconds.

If it still will not start

Dry the spark plug (most effective)

1. Turn the switch to OFF.
2. Remove the spark plug, then pull the starter 5 to 10 times to vent the cylinder.
3. Dry the plug, reinstall it, then retry the “no choke, full throttle” start.

Check the air and fuel basics

A flooded engine often happens alongside restricted airflow or an over-primed fuel system.

• Clean or replace a dirty air filter; a clogged filter makes starting harder. Consider the mtd line trimmer air filter 753-06417.
• If the trimmer runs rough after it starts, the carburetor may be loading up with fuel; use the line trimmer runs rough guide to narrow it down.
• If you smell fuel or see wetness around the tank area, inspect the tank and lines; the mtd line trimmer fuel tank assembly 753-06183 is a common fix when fittings or the tank body leak.

What “flooded” looks like (and what to do)

Symptom	What it usually means	Best next move
Strong gas smell, wet plug	Too much fuel in cylinder	No choke, full throttle; dry plug
Starts then dies immediately	Still too rich, restricted air	Check air filter; retry start
Won’t fire at all after many pulls	Plug soaked, fuel not clearing	Remove/dry plug; vent cylinder

Why it matters

Unflooding correctly prevents repeated hard pulls that can wear the recoil starter and helps avoid plug fouling. It also gets you back to a stable air-fuel mix so the 2-cycle engine can ignite consistently.

For model-specific starting and choke positions, follow the 316791020 owner's manual.

You can order replacement parts for your Craftsman 316791020 from the parts list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026

To replace the cutting line on your Craftsman 316791020 gas line trimmer, we remove the trimmer head cover, reload the line into the spool or Easy Wind channels in the correct direction, then reassemble and test bump-feed. Line diameter and head details are listed in the 316791020 owner's manual.

Before you start

• Shut the engine off and let the muffler cool.
• Disconnect the spark plug boot.
• Clean debris off the head so arrows and tabs are visible.
• Cut two equal lengths of line (most bump-feed heads use two).

Reload steps (typical bump-feed or Easy Wind style)

1. Remove the head cover (press side tabs or remove the bump knob, depending on head style).
2. Pull the spool out; note the spring position.
3. Load line:
   • Two-channel heads: feed one line into each channel.
   • Wind in the direction of the arrow; keep steady tension so line does not cross.
4. Thread line ends through the eyelets and reassemble the spool, spring, and cover.
5. Start the trimmer and tap the head lightly to confirm bump-feed advances line.

If the line will not feed

• Rewind to match the arrow direction on the spool.
• Reduce tangles by rewinding with firm, even tension.
• Use the line diameter specified in the 316791020 owner's manual.
• Clean packed debris from the spool case and eyelets.

Parts that often relate to line problems

Symptom	What to check	Example part
Line breaks or throws off	Guard loose or missing	Line trimmer guard assembly 753-04283
Guard will not stay tight	Screw stripped or missing	Line trimmer guard mounting screw 753-04282
Line binds at the head	Eyelet/spool case worn	Mtd line trimmer spool case and eyelet 753-04284

Why it matters

Correctly loaded line feeds smoothly, cuts cleaner, and reduces vibration that can damage the guard and spool components.

Replacement parts for Craftsman 316791020 are listed with the diagrams for this model; for broader model searches, use Sears PartsDirect.

Last updated: February 2026

For Craftsman line trimmer model 316791020, the correct fuel line size is the one that matches the tank grommet and the carburetor fittings on your exact unit. Most gas line trimmers use small-engine fuel tubing in the 1/8 inch to 3/16 inch inside diameter range; confirm the exact size using the routing and fuel system details in the 316791020 owner's manual.

How we recommend confirming the correct fuel line size

Use the old line (if available) as your template; fuel line sizing is about getting an airtight seal.

• Measure inside diameter (ID) with calipers; ID must fit snugly on the tank and carburetor nipples
• Measure outside diameter (OD); OD must pass through the tank opening and seat correctly in the grommet
• Cut the new line cleanly (square cut) so it seals
• Route the line with smooth bends; kinks restrict fuel flow
• Replace any hardened, swollen, or cracked tubing immediately

Quick sizing guide (typical for gas line trimmers)

These are common sizes used across many Craftsman and MTD-built trimmers; your unit must be measured for an exact match.

Common fuel line ID	Typical use	What to watch for
1/8 inch	Smaller fittings, return/vent on some designs	Too loose causes air leaks and hard starting
3/16 inch	Larger fittings, supply line on some designs	Too tight can split or not seat fully

Symptoms that point to the wrong size (or a leak)

A fuel line that is too loose, too tight, or kinked changes fuel delivery and can make the trimmer unreliable.

• Won’t start or only runs on primer fuel
• Starts, then dies when you squeeze the throttle
• Surging or “runs rough” at idle
• Fuel odor or wetness around the tank opening

Parts that are commonly involved in fuel-line issues

If the leak is at the tank opening or fittings, replacing the tank assembly is often the most reliable fix. A restricted air filter can also mimic fuel problems.

• Mtd line trimmer fuel tank assembly 753-06183
• Mtd line trimmer air filter 753-06417

Why it matters

Correct fuel line sizing keeps the fuel system sealed so the carburetor can pull fuel consistently; even a small air leak causes hard starting, stalling, and poor throttle response.

You can order parts for model 316791020 from the parts list for this model, or search by model number on Sears PartsDirect.

Last updated: February 2026