511010601 Trimmer Head - Fits Redmax PT104, PT-104 Plus, BC250, BC2300 - 2 Pack Ver. 2

511010601 Trimmer Head - Fits Redmax PT104, PT-104 Plus, BC250, BC2300 - 2 Pack Ver. 2511010601 PT104 Trimmer Head for Redmax String Trimmers Pack of 2 Key Features Commercial Grade Bump Feed: Designed for professional use, the PT104 "Plus" style head allows for rapid line advancement with a simple tap on the ground during full throttle operation. High Capacity Spool: Engineered to hold up to 20 feet of 0. 095" diameter line, significantly reducing downtime spent reloading during large scale landscaping jobs. Reinforced Alloy Eyelets:

511010601 / PT104 Trimmer Head for Redmax String Trimmers - Pack of 2

Key Features

• Commercial-Grade Bump-Feed: Designed for professional use, the PT104 "Plus" style head allows for rapid line advancement with a simple tap on the ground during full-throttle operation.
• High-Capacity Spool: Engineered to hold up to 20 feet of 0.095" diameter line, significantly reducing downtime spent reloading during large-scale landscaping jobs.
• Reinforced Alloy Eyelets: Features high-grade metal line exits that resist heat buildup and friction, preventing the trimmer line from "welding" to the head during intensive use.
• Split-Spool Design: Includes an internal divider to keep the line segments separated, preventing tangling and "overlapping" for a smooth, consistent feed every time.
• Impact-Resistant Composite: Manufactured from a specialized glass-filled nylon composite to withstand high-velocity impacts with rocks, curbs, and fence posts.

Replaces / Cross-Reference Part Numbers

• 511010601
• PT104 / PT104 Plus
• 511010602
• 630-310
• 84471010601

Compatibility & Fitment

This trimmer head is the primary professional choice for Redmax and many Husqvarna-based straight shaft trimmers. Key compatible models include:

• Redmax BC Series: BC250, BC225, BC2300, BC2600.
• Redmax BCZ Series: BCZ2400S, BCZ2401S, BCZ2460S, BCZ2460TS, BCZ2600S, BCZ2601S, BCZ2660TS, BCZ3060TS.
• Redmax TR Series: TR2300S, TR2301S, TR2350S.
• Technical Fitment: Designed for models utilizing the M10 x 1.25 LHF (Left Hand Female) arbor thread.

When to Replace

• Worn-Through Bump Knob: The red center knob has ground down to the point where the internal spring is exposed or it no longer triggers the line release.
• Cracked Housing: Visible stress fractures in the black outer shell, which can lead to the head shattering at high RPMs.
• Eyelet Failure: The metal eyelets have fallen out or are deeply grooved, causing the trimmer line to snap off inside the head frequently.
• Internal Spool Jamming: The plastic "teeth" inside the head that lock the spool have rounded off, causing the head to dump all the line at once.
• Excessive Vibration: The head has become unbalanced due to uneven wear, putting unnecessary stress on the trimmer's gear head and drive shaft.

Installation Tips

• Left-Hand Threads: Remember, this head is Left-Hand Threaded. To tighten it onto the trimmer, you must turn the head Counter-Clockwise.
• Lock the Gear Head: Use a small screwdriver or the factory locking pin to hold the gear head shaft stationary while you spin the old head off and the new one on.
• Spool Direction: When reloading line, follow the arrows molded into the internal spool. Loading the line in the wrong direction will prevent the bump-feed mechanism from operating.
• Soak Your Line: To extend the life of your trimmer line, soak the spool in water for 24 hours. This keeps the nylon hydrated, making it more flexible and resistant to snapping at the eyelet.
• Clean the Spring: Every time you reload the line, shake out any dirt or grass trapped around the internal spring to ensure the "bump" action stays smooth and responsive.