Leica M6 Not Winding: What the Problem Usually Means
If your Leica M6 is not winding, the issue is usually mechanical, not mysterious.
The camera’s advance lever, shutter-cocking linkage, film take-up path, or internal counter mechanism may be obstructed, worn, or misaligned.
The Leica M6 is a mechanical 35mm rangefinder camera with a simple but precise film transport system.
That simplicity is an advantage, but it also means a single fault can stop the winding lever from moving normally.
First Signs to Look For
Before opening anything or forcing the lever, identify the exact symptom.
The meaning changes depending on whether the lever is fully stuck, moving loosely, or advancing but not fully cocking the shutter.
- Advance lever locks hard and will not move at all.
- Lever moves but feels disconnected or unusually light.
- Lever returns normally but the shutter does not cock.
- Frame counter does not advance even though film may be moving.
- Film rewind resistance changes after loading or exposure.
Each pattern points to a different cause, and that distinction matters before any repair decision.
Common Causes of a Leica M6 Not Winding
1. The shutter is already cocked or the advance cycle is incomplete
On the Leica M6, the film advance lever cocks the shutter and advances the film in one motion.
If the shutter was already cocked and the lever is being tested repeatedly without releasing the shutter, it may feel blocked.
Make sure the shutter has actually been fired before assuming a malfunction.
2. Film was loaded incorrectly
Incorrect loading is one of the most common reasons a Leica M6 not winding complaint turns out to be a user-side issue.
If the leader is not seated properly on the take-up spool, the film may slip while the lever appears to operate.
Check for these loading problems:
- The film leader is too short to catch securely.
- The sprocket holes are not engaged with the transport sprocket.
- The pressure plate is not seated correctly after loading.
- The rewind knob does not turn slightly when advancing film.
If the film is not moving, the camera may still seem normal from the outside.
3. A partially jammed shutter mechanism
If the shutter curtains are out of sync, damaged, or obstructed, the advance lever may stop because the camera cannot complete the cocking cycle.
This often feels like a solid mechanical block, not a smooth resistance.
Mechanical rangefinder cameras such as the Leica M6 depend on tightly timed shutter and advance mechanisms.
A misfire, internal wear, or dried lubricant can create enough drag to interrupt the cycle.
4. Dried grease or internal wear
Older Leica M6 cameras may develop sticky grease in the winding mechanism, film counter assembly, or related internal linkages.
Over time, lubricants can thicken and create resistance, especially if the camera has been stored in humid or hot conditions.
Typical wear points include:
- Advance lever bearings
- Ratchet and pawl components
- Film counter gearing
- Shutter cocking linkage
This is one reason a camera may work intermittently before becoming fully stuck.
5. A damaged or obstructed frame counter
The frame counter on a Leica M6 is mechanically linked to film advance behavior.
If it is jammed or damaged, it can sometimes interfere with smooth winding.
While less common than loading errors or shutter issues, it is worth inspecting if the lever feels abnormal after a previous repair or impact.
6. Impact damage or rough handling
A dropped camera can shift internal parts, bend a lever, or disturb the transport mechanism.
Even if the body looks fine externally, a Leica M6 not winding problem after impact may indicate internal misalignment that needs professional service.
What to Check Before Forcing the Lever
Do not force the winding lever.
On a Leica M6, forcing a stuck mechanism can damage gears, springs, or linkage components that are more expensive to repair than the original issue.
- Confirm the shutter is not already cocked. Fire the shutter once if safe to do so.
- Check film loading. Open the baseplate and ensure the leader and sprockets are seated correctly.
- Inspect the rewind knob. It should show slight movement during advance if the film is engaged.
- Test with the back open and no film. If the lever still binds, the issue is likely mechanical.
- Listen and feel for abnormal grinding or clicking. These are signs of internal resistance.
If the advance lever moves normally without film but not with film loaded, the problem is often film loading or take-up engagement rather than a broken transport.
How Film Loading Problems Mimic a Mechanical Failure
A Leica M6 can appear broken when the film simply is not engaged.
Because the camera does not have a motor drive, the user’s loading technique is part of the transport system.
To reduce loading mistakes:
- Trim the leader to a usable length.
- Insert the film head firmly into the take-up spool slot.
- Advance slowly while checking that the rewind knob rotates.
- Close the baseplate securely and confirm the film counter starts moving.
If the rewind knob remains still while the lever advances, the film may not be catching at all.
When the Issue Is Likely Mechanical
If the Leica M6 not winding problem happens with no film loaded, or the lever stops at the same point every time, a mechanical fault is more likely.
This includes worn springs, sticky grease, a shutter cocking problem, or damage from age and prior service.
Mechanical signs usually include:
- Lever stops abruptly at the same position
- No normal tension or return feel
- Shutter does not release properly
- Advance action feels gritty or uneven
- Counter behavior becomes inconsistent
At that stage, professional inspection is usually the safest next step.
What a Technician Typically Checks
A qualified Leica technician will usually inspect the transport and shutter sequence together, because they are interdependent.
On a film camera like the M6, separating those functions can be misleading.
Service checks often include:
- Advance lever assembly and return spring
- Shutter cocking and release timing
- Film counter gearing
- Take-up spool engagement
- Internal lubrication condition
- Signs of wear, corrosion, or impact damage
In many cases, a proper CLA, or clean, lubricate, and adjust service, restores normal operation if no major parts are broken.
Preventing Future Winding Problems
Good handling and storage reduce the chances of a Leica M6 not winding issue returning.
Because the camera is mechanical, preventive care matters more than it does on many modern bodies.
- Advance the lever smoothly instead of forcing it.
- Avoid storing the camera cocked for long periods if possible.
- Keep the camera in a dry, stable environment.
- Use compatible film loading habits every time.
- Schedule periodic service if the camera sees regular use.
Clean, consistent operation helps the advance mechanism last longer and makes faults easier to spot early.
When to Stop Troubleshooting and Get Service
If the lever will not move after confirming film is loaded correctly, or if it locks hard and repeatedly, stop testing it.
Repeated force can turn a minor service issue into a costly repair.
Seek professional help if you notice:
- Hard locking with no relief
- Grinding, scraping, or clicking inside the body
- Shutter failure along with winding failure
- Visible damage from impact
- Intermittent advance that gets worse over time
A Leica M6 is a precision mechanical camera, and a careful diagnosis is usually faster and cheaper than continued trial and error.