Now that your spool is empty, look for its starter hole – some strimmers have one, while others have two. You’ll need to insert the tip of your new strimmer wire into this hole, before winding the strimmer around the wire. Most strimmers will have arrows printed onto its spool to show you which way the wire should be wound. As you do this, keep inserting the wire into the attached eyelets or holes and keep it as tight as possible. This will help to prevent your strimmer from jamming once you’re using it. If you’ve just used your strimmer, give it time to cool down before replacing its wire. Make sure that you’ve also disconnected it from its electricity supply, or removed the battery on a cordless strimmer. This will save you from accidentally turning it on. 3. Remove The Cap Take off any old wire that may still be on the spool. Wear gloves when doing this, as the line can be sharp. 5. Insert The New Wire