KEEP IT RUNNING
Winch Maintenance
Muir’s Winch Maintenance guide covers installation hints, electrical wiring, servicing schedules, and troubleshooting — everything you need to keep your windlass or capstan running reliably, season after season.
INSTALLATION
Handy Hints
It is a common error to locate the windlass too far forward or too close to the bulkhead, leaving insufficient room for chain and anchor stowing. The chain fall should be positioned in the centre of the chain locker to maximise fall. If the chain falls alongside a bulkhead or onto the stem, it will pyramid and jam.
If the windlass must be positioned such that the chain falls into an undesirable area, a metal tube can be fitted under the hawse pipe to redirect the chain to a preferred position. This pipe should be at least two times the diameter of the chain and as vertical as possible. Position the windlass in the best location with the hawse facing forward.
Ensure sufficient room to run electric cables to the windlass. Follow all installation instructions, including underdeck stiffening, deck camber, alignment, mounting blocks, and sealing procedures. The gearbox and motor can be located in one of eight positions. Good Winch Maintenance starts at installation, long before your first excursion.
WIRING & CONTROLS
Electrical
Winch Maintenance isn't just mechanical — seven electrical things to get right before your windlass ever leaves the dock.
Wiring Diagrams
Refer to the wiring diagrams at the back of your windlass manual for detailed wiring instructions. Manuals can be downloaded from the Technical Downloads page.
Circuit Breaker
A circuit breaker must be fitted to ensure warranty validity. If the windlass is overloaded or stalled, it automatically cuts power to protect the wiring and motor.
Note: not to be used as an isolating switch.
Deck Switches
Best located either port or starboard of the windlass, or directly behind it — within easy reach of your foot or knee, with a clear view of the anchor and chain coming aboard.
Isolation Switch
Should be installed in an accessible position for safety, ideally near the battery or main switches.
Note: not a circuit breaker.
Batteries
Locate as close to the windlass as possible. Larger cables reduce voltage drop and heat build-up; small-diameter cables can significantly reduce motor performance.
Rotation
Windlasses may be wired for single or dual direction using corresponding deck switches, or a remote solenoid package with a toggle switch, hand pendant, or AutoAnchor system.
Solenoid Installation
Install in an upright position, as close as possible to the electric motor or capstan. Do not install in a chain locker — it must be located in a dry area only. Refer to the relevant wiring diagram for detailed installation information.
HOW OFTEN
Winch Maintenance Servicing Schedule
This Winch Maintenance schedule starts simple: rinse all deck gear with freshwater after every excursion to prevent salt build-up and corrosion.
After Every Excursion
Freshwater rinse of all deck gear to prevent salt build-up and corrosion.
Yearly — Pleasure Vessels
Strip, clean, and lubricate with a marine-grade Teflon or lithium grease (e.g. Duckhams Keenol, Castrol LMX). Never use soap-based grease.
More Frequent — Workboats & Charter
Same servicing process as pleasure vessels, performed on a shorter interval due to heavier use.
Atlantic models have a grease nipple on the aft side of the base plate, lubricating the main drive shaft. The gear drive is factory-filled and sealed with long-life synthetic oil that does not require replacement for the life of the unit.
DIAGNOSE THE ISSUE
Troubleshooting
When something's not working, this Winch Maintenance troubleshooting guide narrows it down fast.
Electrical
Check the battery circuit breaker and ensure the isolating switch is on.
Confirm the battery is charged to 12 or 24 volts.
Check the foot switch plunger and remote control solenoid for contact.
If the solenoid clicks but the motor doesn't run, the issue may be low voltage, a faulty solenoid, or a loose wire.
Inspect all wiring between controls, solenoid, and motor for continuity.
If the motor still will not turn, check that the motor brushes are not worn or sticking.
Mechanical
Ensure the clutch above the chain gypsy is tightened using the supplied manual handle.
If the line slips, check the tension on the finger and adjust spring tension as needed.
Check the drive key between the gearbox output and main shaft.
Verify the drive key between the gearbox and motor input is secure.
Hydraulic Motor
Refer any problems with your hydraulic motor to a Muir Service Agent or Muir Kingston for assessment and repair.
QUICK REFERENCE
Winch Maintenance FAQs
Quick answers to the Winch Maintenance questions we hear most.
How often should I service my Muir windlass?
For pleasure vessels, strip, clean and lubricate your windlass yearly. Workboats and charter vessels see far more use and should be serviced more frequently.
What grease should I use on my windlass?
Use a marine-grade Teflon or lithium grease, such as Duckhams Keenol or Castrol LMX. Never use soap-based grease.
The solenoid clicks but the motor won't run — what's wrong?
This usually points to low voltage, a faulty solenoid, or a loose wire. Check all wiring between the controls, solenoid, and motor for continuity, and confirm the battery is charged to 12 or 24 volts.
Where do I find wiring diagrams for my specific windlass model?
Wiring diagrams are included at the back of your windlass manual, available to download from the Technical Downloads page.
Need Hands-On Help?
Need more help with Winch Maintenance? Contact a Muir Service Agent, or download your model's manual from Technical Downloads for full wiring diagrams and specifications.