HJ604C Cordless Grass Shear + Hedge Trimmer Sun Joe® HJ604C Cordless Grass Shear + Hedge Trimmer | Product Guide Quick cordless touch-ups for grass, shrubs, and tight spaces. The Sun Joe® HJ604C Cordless Grass Shear + Hedge Trimmer is a lightweight 2-in-1 garden trimmer designed for small gardens, hedge grooming, lawn edges, and areas your mower cannot reach. It uses a 7.2V lithium-ion battery, includes an interchangeable 4-inch grass shear blade and 6-inch hedge trimmer blade, and features a safety lock-off button to help reduce accidental starting. 🔋 1.5Ah Battery ✂️ Interchangeable Blades 🌱 Small Garden Detail Work Meet the HJ604C Key Components 🖐️ Handle — compact grip area for controlling the shear/trimmer 🔒 Safety lock-off button — helps reduce accidental starting ▶️ ON/OFF trigger switch — starts and stops the tool 🔋 Charge level indicator — shows charging, full charge, and low charge status 🔌 Charging socket — connects the included charger to the tool ⚙️ Motor housing — holds the blade connection and gear system 🌱 Grass shear blade — 4-inch blade for lawn edges and fine detail trimming 🌿 Hedge trimmer blade — 6-inch blade for small hedges and shrubs 🛡️ Blade covers/sheaths — protect blades during storage and transport 🔌 Battery charger — included charger for the built-in lithium-ion battery Technical Specifications Specification HJ604C Product Type Cordless 2-in-1 grass shear + hedge trimmer Best Use Small gardens, hedge grooming, lawn edges, small shrubs/hedges, and tight areas your mower cannot reach Power Type 7.2V rechargeable lithium-ion Battery Voltage 7.2V nominal; 8.4V max initial no-load voltage when fully charged Battery Capacity 1.5Ah Battery Type Lithium-ion Charger Included Charger Input 120V AC, 60 Hz Charger Output 9V, 0.4A Charge Time Approximately 3 hours; may take up to 5 hours depending on charge level and ambient temperature Grass Shear Blade 4 in. / 10.2 cm steel blade Hedge Trimmer Blade 6 in. / 15.2 cm steel blade Hedge Trimmer Cutting Diameter 0.3 in. / 0.8 cm No Load Speed 1,250 RPM ±10% Product Dimensions 12.8 in. L x 4.8 in. W x 5.3 in. H Net Weight 2.1 lbs / 0.94 kg Warranty 2 Year Warranty What's in the Box Included Item HJ604C Cordless grass shear + hedge trimmer ✔ Hedge trimmer blade ✔ Hedge trimmer blade sheath ✔ Grass shear blade ✔ pre-installed Grass shear blade sheath ✔ Charger ✔ Manual ✔ Before You Trim 🚫 Keep hands away from the blades. The blades continue moving for a few seconds after the tool is switched off. Always release the trigger and wait for the blades to stop completely before cleaning, adjusting, carrying, or changing blades. ⚠️ Do not use in rain or wet conditions. Keep the tool dry and keep bystanders a safe distance away from the work area. 💡 Light-duty trimming only: This tool is intended for small shrubs, hedge grooming, lawn edges, and residential detail trimming. Do not force the blades through dense growth. Charging the Battery 🔋 Charge before first use. The HJ604C ships with a low charge and should be fully charged before operation. Plug in the charger Plug the charger adapter into a compatible indoor AC outlet. Connect the charger to the tool Insert the charger plug into the charging socket on the back of the handle. Watch the charge indicator The red LED indicates charging. The green middle LED indicates the tool is fully charged. Unplug when fully charged Disconnect the charger from the outlet and the tool when charging is complete. ⚠️ The charger does not automatically turn off when the battery is fully charged. Do not leave the tool plugged into the charger for an extended period after charging is complete. Charge Indicator Guide Indicator Meaning Red LED Charging Green LED Fully charged Yellow LED Low charge; recharge the tool before continuing Changing Blades 🚫 Wear protective gloves before handling the blades. Make sure the tool is off and the blades have completely stopped before changing blades. 1 Open Remove blade cover. › 2 Remove Lift blade from housing. › 3 Align Seat blade and gear shaft. › 4 Click Slide cover into place. Turn the tool upside down Place the HJ604C on a hard, stable surface. Hold the unit upside down with one hand. Remove the blade cover Gently lift the tab of the blade cover and slide the tab back until the cover can be removed. Remove the installed blade Gently lift the end tip of the blade away from the tool and remove it from the motor housing. Install the desired blade Insert the grass shear blade or hedge trimmer blade into the base of the motor housing. Align the gear shaft in the middle of the blade with the gear in the center of the unit. Seat the blade flat Align the four lugs so the blade lays flat against the housing for a secure fit. Reinstall the blade cover Align the blade cover with the slots on the base of the motor housing, then push it forward until it slides and clicks into place. Starting + Stopping Check your work area Make sure the area is clean, well lit, and free of hidden wires, hard objects, fencing wire, metallic plant supports, or debris that could damage the blade. Start the tool Push and hold the safety lock-off button with your thumb while pressing the ON/OFF trigger switch with your forefinger. Release the safety lock-off button Once the trigger engages, you can release the safety lock-off button and continue operation. Stop the tool Release the ON/OFF trigger switch. Wait until the blades stop completely before setting the tool down or making adjustments. ⚠️ Do not force the blades. If the blades slow down, reduce your cutting pace. If the blades jam, release the trigger immediately. Do not use your fingers to free jammed blades. Blade Use Guide Blade Recommended Use 4 in. Grass Shear Blade Grass trimming, lawn edge touch-ups, and fine detail work around tight areas where a mower cannot reach. 6 in. Hedge Trimmer Blade Light-duty trimming of small hedges and shrubs with branches up to 0.3 in. / 0.8 cm diameter. Hedge Trimming Tips 🌿 Use only the hedge trimmer blade for hedge trimming. Try to keep the cutting device angled at approximately 15° to the cutting surface. 1 Shape from the bottom up Trim both sides first, starting at the bottom and working upward. This prevents clippings from falling into areas that still need trimming. 2 Use a trapezoid shape A hedge should widen slightly toward the bottom so more light can reach the lower branches. 3 Trim long growth in stages For very long branches, trim in several stages instead of forcing the blade through dense growth. 4 Pre-cut thicker branches Use pruning shears for branches thicker than 0.3 in. / 8 mm before using the HJ604C. Maintenance + Care 🚫 Always switch the tool off and let it cool before inspection, cleaning, or maintenance. Keep hands away from the blade edges even when the tool is not in use. 1 Keep vents clean Keep ventilation vents clear and prevent foreign matter from entering the vents. 2 Clean the housing safely Use only a soft, lightly moistened cloth. Do not use solvents, and never let liquid enter the tool or immerse any part of the tool in liquid. 3 Clean blades after use Remove trimmings, sap, and debris from the cutting blades after each use. 4 Lubricate the blade rail Apply a small amount of light machine oil or spray lubricant to the blade rail after each use. For longer jobs, lubricate at regular intervals during operation. 5 Inspect before each use Check for worn, damaged, broken, or loose parts before operation. Do not use the tool if parts are damaged. Storage 1 Fully charge before storage Fully charge the battery before storing the tool for an extended period. 2 Clean the tool Clean the housing and blades as described in the maintenance section. 3 Install blade covers Always place the blade covers/sheaths over the blades during storage or transport. 4 Store in a dry, secure location Store the tool indoors in a dry location between 41°F / 5°C and 104°F / 40°C. 5 Recharge after long storage Before using the tool after prolonged storage, fully recharge the battery. Battery Care 🔋 For best battery life: store and charge the tool in a cool area, recharge immediately after the battery is discharged, and recharge every 6 months if the tool is stored for a long period without use. 🔥 Do not burn or incinerate the battery. Dispose of batteries according to federal, state, and local regulations. Cover terminals with electrical tape before disposal to help prevent short circuiting. Troubleshooting Guide Use these quick checks for common HJ604C concerns. Keep hands away from the blades and wait until the blades stop completely before checking the tool. 🔴 Tool Does Not Start Possible Causes Battery is not charged Safety lock-off button was not pressed Trigger was released too soon Solutions Charge the tool fully Press and hold the safety lock-off button while pressing the trigger Once the trigger engages, release only the safety lock-off button 🔋 Battery Runs Low Quickly Possible Causes Battery was not fully charged Tool is being forced through dense growth Battery has been stored discharged Solutions Charge for 3 to 5 hours before use Slow your cutting pace and avoid dense branches Recharge after use and every 6 months during long storage ✂️ Blades Slow Down Possible Causes Cutting pace is too fast Vegetation is too dense Blades need cleaning or lubrication Solutions Reduce your cutting pace Use pruning shears for branches over 0.3 in. / 8 mm Clean and lubricate the blades after use ⚠️ Blades Jam Possible Causes Dense growth or hard debris is caught in the blade Blade contacted fencing wire or a hard object Solutions Release the trigger immediately Wait for the blades to stop completely Do not use fingers to free jammed blades Clear the obstruction safely and inspect the blade for damage 🔌 Tool Does Not Charge Possible Causes Charger is not connected to the outlet Charger plug is not fully seated in the charging socket Tool is too hot or too cold Solutions Check the outlet and charger connection Reconnect the charger plug to the tool Charge and store the tool in a cool, dry area 🟡 Yellow LED Is On Meaning The battery is running low Solution Stop trimming and recharge the tool before continuing Optional Accessories Accessory Model Grass shear blade HJ604C-1.10 Hedge trimmer blade HJ604C-1.11 Blade cover for HJ604C/HJ605CC HJ604C-1.9 Certified factory authentic charger for HJ604C/HJ605CC HJ604C-CHRG Video Guide Frequently Asked Questions What comes with the HJ604C? The HJ604C includes the cordless grass shear + hedge trimmer, hedge trimmer blade, hedge trimmer blade sheath, grass shear blade, grass shear blade sheath, charger, and manual. What is the HJ604C best used for? It is best for small gardens, hedge grooming, lawn edges, small shrubs/hedges, and tight areas your mower cannot reach. Is this tool cordless? Yes. The HJ604C uses a built-in 7.2V lithium-ion battery for cordless operation. How long does it take to charge? Charging takes approximately 3 hours and may take up to 5 hours depending on the remaining battery charge and ambient temperature. Does the charger shut off automatically? No. The charger does not automatically turn off when the battery is fully charged. Unplug the charger from the outlet and tool when charging is complete. What do the charge indicator lights mean? Red means the tool is charging. Green means fully charged. Yellow means low charge and the tool should be recharged. Can I change the blades? Yes. The HJ604C has interchangeable blades. Use the 4-inch grass shear blade for fine grass detail work and the 6-inch hedge trimmer blade for small hedges and shrubs. What branch size can the hedge trimmer blade cut? The hedge trimmer blade is designed for light-duty trimming and has a cutting diameter of 0.3 in. / 0.8 cm. Use pruning shears for thicker branches before trimming. Can I use it in wet grass or rain? No. Do not use the HJ604C in rain or wet conditions. Keep the tool dry. What warranty does it have? The HJ604C is backed by a 2-year limited warranty for ordinary household use when purchased from All Season Power / Shop Joe or an authorized seller with proof of purchase. Related articles AJV1000 Cordless Handheld Auto Vac