Owner’s manual
What trimmer line does Craftsman use?
For the Craftsman 90098020 trimmer/edger, we use round nylon trimmer line; the operator manual calls for .065-inch diameter round line for proper feeding and to prevent overheating. For the exact line and spool guidance for your unit, follow the owner's manual.
Correct line size for Craftsman 90098020
Use these specs when buying or reloading line:
- Line shape: Round nylon (not serrated)
- Primary diameter: .065 in (1.65 mm)
- Recommended replacement spool model: 98030 (per the manual)
- Avoid: Bumping the head on the ground to feed line (it disrupts the feed mechanism)
What happens if you use the wrong line
Using the wrong diameter or type is one of the most common causes of poor cutting and feed problems.
- Too thick or heavy line can overload the motor and cause overheating
- Non-round or serrated line can jam the spool and reduce self-feeding performance
- Incorrect line can cause short feeding, frequent breakage, or no feed at all
Quick compatibility table
| What you install | What you can expect |
|---|---|
| .065 in round nylon line | Best feeding and normal motor load |
| Heavier gauge line | Overheating risk, poor feed, reduced runtime |
| Serrated or “shaped” line | Jams, rough feed, extra wear |
Why it matters
This Craftsman electric trimmer uses a self-feeding spool system designed around a specific line diameter. Matching the correct .065-inch round line keeps the trimmer head feeding smoothly, protects the motor, and improves cut quality.
Ordering tip
If you do not see the exact line or spool you need listed for model 90098020, we recommend searching by your full model number on Sears PartsDirect to find the best match.
Last updated: February 2026
Will trimmer Plus fit Craftsman?
TrimmerPlus attachments fit only attachment-capable (multi-tool) trimmers. Your Craftsman model 90098020 is a dedicated 40V MAX trimmer/edger, so it uses its own trimmer head and spool system rather than universal attachment couplers; confirm your exact configuration in the 90098020 owner's manual.
How to tell if your Craftsman is attachment-capable
Attachment-capable tools have a split shaft and a coupler (usually a clamp/knob) where different heads connect. The 90098020 manual describes a fixed trimmer/edger setup (trimmer head, edge guide, guard, spool housing), which is not the same as a multi-tool powerhead.
Check for these signs:
- A shaft coupler between the handle and cutting head
- A release button or pin for swapping attachments
- A separate powerhead marketed for multiple attachments
- Model labeling that calls out “attachment-capable” or “multi-tool”
- A parts breakdown showing a coupler/drive shaft designed for attachments
What does interchange on model 90098020
For this Craftsman 40V MAX trimmer/edger, compatibility is mainly about line size, spool type, and battery platform.
- Cutting line: use round line; the manual calls out .065 inch diameter round line for line replacement
- Spool: the manual recommends a Craftsman replacement spool model 98030
- Battery platform: designed for Craftsman 40V MAX batteries (the manual lists battery models 98026 and 98027 and charger 98024)
Quick compatibility table
| Item | What must match | What to check |
|---|---|---|
| TrimmerPlus attachment | Attachment-capable coupler/drive | Coupler on shaft, multi-tool labeling |
| Replacement line | Diameter and shape | Round line size in manual |
| Replacement spool | Spool model/style | Craftsman spool model 98030 |
| Battery/charger | 40V MAX platform | Battery and charger model list |
Why it matters
Using an attachment that is not designed for the drive system can cause poor performance, vibration, or damage. Sticking with the correct spool, line diameter, and 40V MAX battery system keeps the motor from overheating and the feed system working correctly.
If you need to look up additional parts by model number, we list parts for 90098020 and you can also search by model on Sears PartsDirect.
Last updated: February 2026
Can I use .095 trimmer line in a .080 trimmer?
For the Craftsman 90098020 trimmer/edger, we do not recommend jumping up to .095 line; the operator instructions call for round line in a specific diameter range, and heavier line can overload the motor and cause overheating. For best feeding and cutting performance, follow the line size listed in the owner's manual.
What line size to use on Craftsman 90098020
Our guidance for this model is to stick with round nylon monofilament line in the diameter the manual specifies.
- Use round line (not serrated, not “shaped” line)
- Avoid heavier gauge line; it increases load and heat
- Do not “force fit” thicker line into the spool; it can bind and stop feeding
- Replace line with the trimmer powered off and the battery removed
What happens if you use thicker line (.095 vs .080)
Even when thicker line physically fits, it changes how the trimmer runs.
| Change | What you may notice | Why it matters |
|---|---|---|
| Higher cutting load | Slower spool speed, more bogging | The motor works harder and runs hotter |
| Feeding problems | Poor self-feed, line not advancing | Thicker line can bind in the spool |
| Shorter runtime (battery models) | Battery drains faster | More torque demand increases current draw |
| More vibration | Rougher cut, more wear | Extra mass and drag amplify vibration |
Why the manual’s line spec matters
This Craftsman trimmer uses a self-feeding spool system designed around a specific line diameter. When line is too thick, the tool can stop feeding correctly and the motor can overheat, especially during edging or heavy weed cutting.
Quick tips to reduce line breakage without upsizing
- Trim right-to-left to control debris throw and reduce snagging
- Keep the head from dragging on the ground
- Stay off fences, brick, and curbs; they chew line quickly
- Cut tall growth from the top down (do not take it all in one pass)
Finding the right parts and supplies
We list model-matched parts and diagrams for Craftsman 90098020; for additional supplies and model lookups, search by model number on Sears PartsDirect.
Last updated: February 2026
What is the fuel mix for a Craftsman gas trimmer?
Craftsman model 90098020 is an electric line trimmer, so it uses household electricity and does not use any fuel mix. If you own a Craftsman gas trimmer instead, the correct gas-to-2-cycle-oil ratio is specified for that exact model in the 90098020 owner's manual.
Quick check: gas vs. electric
Use these identifiers to make sure you are following the right instructions.
- Electric trimmer (like 90098020): power cord, no fuel tank, no primer bulb
- Gas 2-cycle trimmer: fuel tank, primer bulb, pull-start, uses mixed fuel
- 4-cycle gas trimmer: fuel tank, uses straight gas (no mix)
- The model tag is commonly on the shaft, near the handle, or on the motor housing
What to do if you actually have a gas Craftsman trimmer
The fuel mix ratio varies by engine and model; using the wrong ratio can cause hard starting and engine damage.
- Find the model number on the trimmer
- Use the fuel ratio listed for that model (often printed in the operator’s manual)
- Mix fuel in an approved container; shake to blend before filling
- Use fresh gasoline and the correct 2-cycle oil type recommended for your engine
| Trimmer type | Fuel mix needed? | What you use instead |
|---|---|---|
| Electric (90098020) | No | Electricity (corded power) |
| Gas 2-cycle | Yes | Gasoline + 2-cycle oil at the specified ratio |
| Gas 4-cycle | No | Straight gasoline |
Why it matters
Fuel-mix instructions only apply to gas engines. For the Craftsman 90098020 electric trimmer, the right focus is safe operation and correct setup per the manual. For parts and model lookups, we recommend starting with the model parts list, or searching by model on Sears PartsDirect.
Last updated: February 2026
