Craftsman 917773760 gas line trimmer Parts

On the Craftsman 917773760 gas line trimmer, replacing the trimmer head starts by shutting the engine off, letting all moving parts stop, and disconnecting the spark plug wire. Then you remove the chassis cover and debris shield fasteners to access the head area; follow the 917773760 owner's manual for the exact fastener locations.

Safety first

• Stop the engine and wait for the lines to fully stop
• Disconnect the spark plug wire and keep it away from the plug
• Work on a flat surface
• If you tip the trimmer, keep the carburetor and fuel cap up
• Wear gloves and eye protection

Basic access steps (from the manual)

These steps get you into the trimmer head area for service:

1. Remove the screw at the front of the chassis cover.
2. Lift the chassis cover up and away.
3. Remove the two screws on the sides securing the debris shield.
4. Tip the trimmer on its side with the carburetor and fuel cap up.
5. Remove the underside screws securing the debris shield, then continue disassembly to reach the head components.

Before you replace the whole head, check these common causes

If the “head problem” is really a line retention issue, the fix is often line setup, not the full head.

• Bulk line must be cut to 18-3/4 inches before use
• Use .155 diameter trimmer line
• Make sure both lines are the same length
• Inspect the carrier plate and retainer clip area for wear
• Avoid dragging the head on concrete or asphalt; it wears the bottom ball faster

Symptom	Most common cause	What to do
Head does not retain line	Line installed wrong or retainer clip worn	Reinstall line correctly; replace worn carrier plate/clip parts
Excessive vibration	Loose hardware or damaged head	Tighten fasteners; inspect head for damage
Loss of head drive	Belt off pulleys or broken	Check belt routing and condition

Why it matters

A properly serviced trimmer head keeps line length even, reduces vibration, and prevents premature wear on the mow ball and carrier plate so the trimmer cuts cleanly through heavy weeds.

Last updated: January 2026

For the Craftsman gas line trimmer model 917773760, neither .080 nor .095 is the better choice because this trimmer is specified for .155-inch diameter line cut to 18-3/4 inches; using the correct size helps prevent vibration and line-retention problems. See the 917773760 owner's manual.

What to use on model 917773760 (recommended)

• Use .155-inch diameter trimmer line.
• Cut each piece to 18-3/4 inches.
• Replace line when it wears to half its original length.
• Keep all installed lines within 1 inch of each other in length to keep the head balanced.
• Avoid using wire, rope, or string; those materials can break and cause injury.

.080 vs .095: when those sizes make sense (general guidance)

If you are shopping for a different trimmer that is designed for smaller line, here is the practical difference:

Line diameter	Best for	Tradeoff
.080	Light edging and thinner grass	Wears faster in heavy weeds
.095	Thicker weeds and longer runtime between changes	More load on small trimmers

Why it matters

Using the wrong diameter line on a high-wheel trimmer like the Craftsman 917773760 commonly leads to poor cutting, excessive vibration, and the trimmer head not retaining the line. Correct line length also improves cutting speed because the ends of the line do the work.

Related parts that affect cutting performance

If cutting feels rough or the head wears quickly, inspect these common wear items:

• Husqvarna line trimmer mow ball 532182217 (protects the bottom of the head from hard-surface wear)
• Line trimmer carrier plate 594935003 (helps retain and support the cutting lines)
• Line trimmer belt 532185476 (a slipping or broken belt can reduce head speed)

Last updated: January 2026

Your Craftsman gas line trimmer’s model number is on the product identification label; for this unit it will read 917.773760 (often shown as 917773760 online). Use that exact number when matching diagrams and ordering parts for the correct fit.

Where to look on the trimmer

Check these common label locations on walk-behind Craftsman weed trimmers:

• On the rear of the chassis/deck near the wheels
• On the side of the frame near the engine mount area
• Near the handle mounting brackets
• Under the debris shield area (wipe grass and dirt off first)
• On a sticker or metal tag riveted to the frame

What the model number looks like

In the documentation, the model is printed as 917.773760. When searching parts, you may see it without the dot as 917773760.

You see on the label/manual	You may type online	Meaning
917.773760	917773760	Same model number
Craftsman weed trimmer	Craftsman line trimmer	Product description

Tips to make sure you have the right number

• Copy the full model number exactly (including any dots or dashes)
• If the label is worn, use a flashlight and take a close-up photo
• Confirm the model in the parts list diagrams in the 917773760 owner's manual

Why it matters

Craftsman trimmers can look similar across model series, but parts like the belt, spindle housing, and throttle control vary by model. Using 917773760 helps ensure you get the correct components and hardware.

Last updated: March 2026