Wood & steel frame
Wrought iron
Farm & ranch
Sliding driveway gates
LiftMaster operatorsFree on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
Get your free estimateMighty Mule Gate Motor Replacement: The Woodland Hills Owner’s Guide
We stock and install Mighty Mule-compatible gate motor replacements across Woodland Hills, with most single-swing arm replacements running between $420 and $780 installed, parts and labor included. Same-day service is available when our truck has your model’s replacement on it, which it usually does for FM and MM series units. You’ll know the motor is gone because the arm stops mid-swing, the control board clicks but nothing moves, or the gate has been running slower every week for a month. Most Woodland Hills owners notice it on a morning when the gate opens halfway and just sits there, leaving the driveway blocked and the car trapped inside.
Which Mighty Mule Models This Applies To
Mighty Mule has shipped a lot of different operator series over the years, and the replacement path is not the same for all of them. The workhorses we see most in Woodland Hills are the FM200, FM350, FM500, and the newer MM260, MM360, and MM572 lines. Each series uses a specific arm length and motor torque rating. The FM350, for example, is a 12-volt system with an internal worm gear that strips under load; the MM572 is a heavier 24-volt unit that typically fails at the limit switch assembly before the motor itself gives out. If you have the original manual, flip to the spec page and look for the model number stamped on the arm housing near the base. If you don’t have the manual, a photo of the arm and control board sent to our office gets us to the right part fast. We use OEM Mighty Mule parts when they’re available and quality aftermarket equivalents when they’re not. The OEM arms carry the exact torque and stroke specs for your gate leaf; some aftermarket units overstate their thrust ratings, and we won’t install a part we wouldn’t put on our own gate.
Styles & brands we work with
Signs Your Mighty Mule Gate Motor Replacement Is Failing
- The arm moves but the gate doesn’t follow it. This usually means the internal drive gear has stripped. The motor spins, the teeth don’t engage, and the arm stalls under load. It won’t fix itself.
- The gate stops halfway and reverses. A failing limit switch or a gear train that’s binding causes the board to think it’s hit an obstruction. The board resets, the arm tries again, same result.
- You hear a grinding or clicking from the arm housing. That’s the worm gear chewing itself up. By the time you hear it, the part is done. Continuing to run it just sends metal shavings through the gearbox.
- The gate opens fine but crawls on the close cycle, or vice versa. Motor windings wear unevenly, especially on gates that run dozens of cycles a day in the Warner Center corridor. One direction gets weak first.
- The control board has power, everything looks normal, and the arm does nothing. A dead capacitor or an open winding inside the motor housing. We bench-test the arm on site to confirm before quoting a replacement.
Replacement Cost & What’s Included
For a Mighty Mule replacement in Woodland Hills, plan on these ranges:
- Single swing arm, FM/MM series: $420 to $680 installed
- Dual swing arm setup (both operators): $780 to $1,150 installed
- Control board replacement (if the motor tests fine but the board is dead): $210 to $330 installed
- Full operator kit with arm, board, and new receiver: $650 to $900 installed
Where you land in that range depends on which series you have, whether the arm and board need to be replaced together, and any mounting or wiring corrections the old unit left behind. Every quote we give you is a written price before any work starts. The number doesn’t move once we’re on site unless we find something you specifically ask us to address. The work carries our full-year written guarantee, and if the repair fails inside that year, the second visit is free. No charge, no argument, no “that part wasn’t covered” games.
See the difference
Before
After
Before
After
Before
AfterDIY or Call Us?
You can safely check a few things without touching a wire. Open the control box cover and look for a blinking status light. Note the blink pattern. Check the arm’s manual release lever to make sure the gate itself still swings freely by hand. Beyond that, this is a 120-volt feed into a 12- or 24-volt DC system with enough stored charge in the capacitors to give you a serious jolt. Mighty Mule arms also hold spring tension that gets released during disassembly. A homeowner with a multimeter and a weekend can swap an arm on a simple FM200, but on the bigger MM572 units with the board, receiver, and limit assemblies all in play, we regularly fix DIY attempts that fried the new board during the install. Lonnie Burke grew up in Los Angeles and has been working operators across the San Fernando Valley long enough to know exactly which step the weekend job usually gets wrong. If the arm is dead and you’re not certain of the model, call us at (650) 719-7207. We’ll diagnose it properly rather than guess at it.
FAQs
We typically see FM series arms last 5 to 8 years in this climate, and the MM series between 6 and 10 years depending on cycle count and how well the gate itself is balanced. The Sunbelt heat takes a toll on capacitors; a gate that runs 20 or more cycles a day in the Warner Center corridor will burn through a motor faster than a residential gate that runs 8 cycles a day. If your unit is past year seven and showing symptoms, replacing the arm proactively beats waking up to a dead gate on a Monday. Call (650) 719-7207 and we’ll give you an honest read on whether it’s time.
On FM and MM series Mighty Mule arms, the internal gearbox is sealed, and the windings are not field-serviceable. Once the gear strips or the motor goes, the repair is a replacement. The control board is a different story, sometimes a failed relay or capacitor on the board can be repaired for less than a new board. We bench-test the arm on the truck before telling you which path makes sense, and the price you hear is the price you get.
A straightforward single-arm replacement, same model, same mounting points, runs about 60 to 90 minutes from start to finish. If we’re upgrading an FM series to an MM series or correcting a mounting issue, figure 2 to 3 hours. We set an arrival window when you book, show up in that window, and leave your gate fully operational before we hand you the invoice.
Yes. We run Mighty Mule parts on our trucks alongside LiftMaster, Ghost Controls, and DoorKing stock, because those are the four brands we see most often across Woodland Hills. If we have your model’s arm on board, you get same-day replacement. If we need to order a specific part for a newer or less common series, we’ll tell you exactly when it lands and schedule the install before we leave your property.
Why Woodland Hills Homeowners Call Carver Gate Repair for Mighty Mule Work
We’re a gate-specific crew. We don’t do fencing as a side hustle or pick up gate work between landscaping jobs. Carver Gate Repair works exclusively on gates and motor systems across nine brands, so when a Mighty Mule unit acts up, we’re not learning your operator on the fly. We work to The Garrison Standard at every job: a written price before we start, background-checked and uniformed technicians at your gate, and a written guarantee on every repair, good for a full year. If we miss something and the repair fails inside that window, we come back and fix it right. We fix it right the first time, or we come back and fix it right. Phones are answered by a live person 24 hours a day, every day of the year, because a gate that won’t open is not a voicemail problem. Carver Gate Repair Woodland Hills is an independent service provider and is not affiliated with Mighty Mule or its parent company.
If your Mighty Mule arm is dead, clicking, grinding, or just giving up halfway through its travel, call us at (650) 719-7207 for a free estimate. We’ll get the right part matched to your model and get your gate moving again.
Written by Lonnie Burke, Owner, Carver Gate Repair Woodland Hills at Carver Gate Repair Woodland Hills, serving Woodland Hills and nearby areas.