Salt, grit, fertiliser, and moisture all leave residue behind. If that residue stays in the hopper, slider, aperture, impeller area, wheels, frame, or control system, it can affect flow, cause stiffness, accelerate corrosion, and make the spreader harder to calibrate next time.

Cleaning is not cosmetic. It protects the parts that make the spreader behave predictably.

This guide covers:

• routine cleaning after fertiliser, seed, salt, ice melt, and other granular materials;
• deeper post-winter cleaning after corrosive material use;
• checks for the slider, aperture, impeller, wheels, axle, frame, and control system;
• drying and lubrication principles before storage;
• warning signs that need replacement parts or support.

For those, use the relevant model manual, Replacing Wear Components, or Off-Season Storage Guide.

Winter material is generally hard on spreaders.

Salt and ice melt products attract moisture. Salt crystals are abrasive. Frozen or damp material can pack around the slider and aperture. Residue can remain hidden around fasteners, the axle, wheel hubs, and the impeller

If left in place, winter residue can cause:

• corrosion on exposed metal parts;
• stiff or sticking control levers;
• poor slider movement;
• aperture leakage or incomplete closure;
• uneven material flow;
• inconsistent spread patterns;
• wheel or axle drag;
• calibration drift at the start of the next season.

A spreader that looks clean from above may still hold corrosive residue underneath.

After any use:

Empty it. Brush it. Rinse it when needed. Dry it fully. Check moving parts before storage.

After winter use:

Empty it. Rinse exposed salt residue thoroughly. Dry it fully. Inspect metal and moving parts. Lubricate or protect service points before storage.

Do not stop at rinsing. Rinsing without drying can leave moisture sitting on the machine and may still promote corrosion.

• Do not leave salt, ice melt, fertiliser or other material in the hopper after use.
  Empty the spreader when the job is finished.

• Do not store the spreader wet.
  Drying is part of maintenance, not an optional extra.

• Do not use sharp metal tools inside the aperture or slider area.
  They can damage flow surfaces and make calibration less predictable.

• Do not aim high-pressure water directly into gearboxes, bearings, seals, or other enclosed mechanisms.
  Use a controlled rinse instead.

• Do not force a stiff lever after winter use.
  Clean and inspect first.

• Do not lubricate parts while salt or grit is still present.
  Lubricants can attract abrasive or corrosive residue.

• Do not calibrate immediately after cleaning if the spreader is still wet.
  Let it dry and confirm material flows normally.

Use this after spreading dry seed, dry fertiliser, or other non-corrosive material.

Do not leave unused material in the hopper.

Return clean unused material to its container only if it has not been contaminated with moisture, dirt, debris, or another product. If the material is damp, mixed, or dirty, dispose of it according to the product instructions.

Use a soft brush to remove loose granules, dust, seed, fertiliser, or debris from:

• hopper corners;
• hopper outlet;
• slider area;
• aperture edge;
• flow path;
• impeller feed area.
• Agitator

Pay attention to the base of the hopper. Material left around the aperture can harden, absorb moisture, or affect the next application.

Remove loose material from around the slider and aperture.

The slider should sit flat and clear of trapped material. The aperture should open and close freely. If material is caught along the closing edge, remove it with a soft brush.

Do not scrape the slider or aperture with sharp metal tools.

Brush material from the impeller and surrounding area.

Check for:

• stuck fertiliser;
• seed husks or chaff;
• salt residue.

The impeller needs to be clean to throw material consistently. Build-up here can change the spread pattern.

If brushing removes all residue, a dry clean may be enough after dry seed or dry non-corrosive material.

If residue remains, rinse affected areas with clean water. Use a controlled rinse, not high-pressure water forced into bearings, gearbox housing, and enclosed mechanisms.

Allow the spreader to dry before storage.

Open areas around the hopper, aperture, slider, impeller, wheel hubs, and frame should be visibly dry. If the spreader is stored wet, corrosion is more likely.

Fertiliser can be just as corrosive as salt and can alsol attract moisture, cake around the aperture, and leave residue that affects flow.

• sticky residue at the hopper base;
• caking around the aperture;
• dust build-up in the slider area;
• fertiliser trapped around fasteners or frame joints;
• material left on the impeller.

Do not leave fertiliser in the hopper overnight, especially in damp conditions.

Seed is non corrosive , but some seed mixtures can contain dust, husks, coatings, chaff, or carrier material.

• coated seed residue;
• chaff or husk build-up;
• small seed lodged in slider gaps;
• any material left in the hopper.

Do not mix leftover seed with fertiliser or salt residue. Cross-contamination can make material unsuitable for reuse.

Use this after any winter use. Do not wait until the end of the season if the spreader has been exposed to salt or ice melt.

Salt residue left on the machine can continue attracting moisture even when the spreader is indoors.

Empty the hopper completely.

Do not leave salt, ice melt, or grit in the hopper between jobs unless the spreader is being used again immediately and the storage conditions are dry and controlled.

Dispose of unused or contaminated material according to the product instructions and local requirements.

Before rinsing, brush out loose material from:

• hopper;
• hopper outlet;
• slider area;
• aperture;
• flow path;
• impeller area;
• wheel hubs;
• axle area;
• frame ledges and fasteners.

Removing loose abrasive material before rinsing reduces the chance of dragging material across moving surfaces.

Rinse exposed salt residue thoroughly with fresh water.

Focus on:

• hopper interior;
• hopper base;
• slider;
• aperture and closure edge;
• underside of the hopper;
• impeller and impeller feed area;
• frame and fasteners;
• axle and wheel hubs;
• control lever area;
• gearbox area;
• cable entry points and exposed cable sections.

Use a gentle, controlled flow of water. Avoid forcing high-pressure water into bearings, or enclosed mechanisms.

If the control lever moves smoothly, operate it gently while rinsing the aperture and slider area. This can help flush residue from moving contact points.

If the lever feels stiff, do not force it. Rinse visible residue, allow it to soak briefly if needed, brush accessible areas, and inspect before operating again.

Salt often collects around the impeller.

Check that:

• the impeller is clear of debris, salt crystals, and compacted residue;
• the impeller rotates freely;
• no visible cracking, wobble, or heavy wear is present.

A dirty or obstructed impeller can change the spread pattern even if the hopper looks clean.

Salt residue can accumulate around wheels, axle points, the gearbox, and frame joins.

Check:

• wheel hubs;
• axle ends;
• frame corners;
• fastener heads;
• brackets;
• any ledge where salty water can sit.

Remove compacted material and rinse exposed residue.

Drying is the step that protects the spreader after rinsing.

Do not put the spreader away wet.

Only lubricate after salt debris and moisture have been removed.

Apply lubricant or protective treatment only to service points recommended in the model manual or maintenance guidance.

Do not over-lubricate the hopper, aperture, slider, or material-contact areas unless the product manual specifically says to do so. Excess lubricant can attract dust, fertiliser, or salt and may affect material flow.

Note: Areas where there are fasteners should be sprayed with a protective lubricant such as WD40

After the final winter use, carry out a more careful inspection before storage.

Check for:

• material left in corners;
• caking around the hopper base;
• blocked outlet;
• residue around the aperture edge;
• visible cracks or distortion.

The hopper should be clean, dry, and free from material before storage.

Check that:

• the correct slider is fitted or stored with the spreader;
• the slider is clean and dry;
• the slider sits flat and is not cracked or distorted;
• the aperture opens and closes fully;
• the aperture closes to a complete seal;
• no grit or salt remains in the closure edge.

If the aperture does not close fully, do not store the spreader as “ready for next season.” Clean again and inspect for trapped material, wear, or damage.

Check that:

• the impeller is clean;
• it rotates freely;
• it does not wobble;
• blades or throwing surfaces are not cracked, missing, heavily chipped, or uneven;
• no used materials are trapped nearby.

If the impeller is damaged, replace or escalate before the next season.

Check that:

• the lever moves smoothly;
• the lever returns correctly;
• The aperture movement matches lever movement.

Do not force a stiff lever. If cleaning does not restore smooth operation, escalate.

Check that:

• wheels rotate freely;
• the spreader does not drag or pull to one side;
• no string, grass, grit, or compacted materials are wrapped around the axle;
• wheel hubs are clean and dry;
• tyres are in usable condition where fitted.

Wheel and axle issues can affect impeller speed, walking consistency, and spread pattern.

Check:

• frame joints;
• brackets;
• fastener heads;
• exposed metal edges;
• areas where saltwater could sit or enter.

Look for early corrosion, loose fasteners, cracks, or deformation.

Some marks are expected after use.

Normal signs may include:

• light scuffing on the hopper interior;
• minor surface marks on the frame;
• light cosmetic staining from fertiliser or salt;
• small scratches on plastic or metal contact areas;
• residue marks that clean off fully.

These do not usually affect spreading if the machine is clean, dry, and moving freely.

Stop and inspect further, replace parts, or contact support if you find:

• corrosion that flakes, pits, or weakens metal;
• lever stiffness that remains after cleaning;
• aperture that does not fully close;
• slider cracked, distorted, or not seating flat;
• impeller wobble, cracks, missing material, or heavy wear;
• wheel drag or axle binding;
• cracked hopper or frame;

Do not rely on calibration to correct these issues. Fix the mechanical or material-flow problem first.

Before storage, confirm:

• hopper is empty;
• slider and aperture are clean and dry;
• impeller area is clear;
• wheels and axle are clean and moving freely;
• frame and fasteners are dry;
• control lever moves smoothly;
• recommended service points have been lubricated or protected;
• any damaged or worn parts have been noted for replacement.

Store the spreader in a dry, sheltered place. Do not store it with material in the hopper. Do not store it wet.

For longer storage, use the Off-Season Storage Guide.

If the spreader was put away after salt or fertiliser use without cleaning, inspect it before using it again.

Do not add fresh material until the aperture opens and closes cleanly and the impeller area is clear.

Cleaning itself does not always require recalibration. But recalibration or a short calibration check is needed when cleaning has changed anything that affects flow.

Re-check calibration if:

• a blockage was removed;
• the slider was removed, refitted, or changed;
• the aperture had been sticking;
• the control lever was stiff;
• the impeller area was obstructed;
• material flow looked different before cleaning;
• the spreader has not been used since winter storage;
• you are changing from salt to fertiliser or seed.

Calibration is the final check after the spreader is clean, dry, mechanically sound, and flowing consistently.

• Empty remaining material.
• Brush hopper and flow path.
• Clean slider and aperture area.
• Brush impeller area.
• Rinse if residue remains.
• Dry before storage.

• Empty all material.
• Brush loose crystals and grit first.
• Rinse exposed salt residue with fresh water.
• Clean hopper, slider, aperture, impeller, wheels, axle, frame, and control points.
• Dry fully.
• Inspect moving parts and metal contact points.
• Lubricate or protect approved service points.

• Complete full post-winter clean.
• Inspect slider, aperture, impeller, wheels, axle, frame, lever, and cable.
• Note worn or damaged parts.
• Replace or escalate before next season.
• Store clean, dry, and empty.