The Scheppach MS175-51 petrol lawn mower is designed for efficient maintenance of medium to large lawns and gardens. With its 51 cm cutting width, it allows you to cover large areas quickly while remaining easy to manoeuvre. Like any petrol lawn mower used regularly, however, it will eventually need some maintenance: a blade that no longer cuts as cleanly, a drive belt starting to wear, a cable becoming loose or a wheel developing play.

That is exactly the purpose of this category: to help you repair your Scheppach MS175-51 without replacing the entire machine. Here you will find the main wear and replacement parts needed to keep your mower in good condition, maintain it from season to season or repair a clearly identified fault.

The principle is simple: when a lawn mower is still working well overall, replacing only the worn or damaged part is often the most sensible solution. A blade, cable, belt or wheel is designed to wear over time and can be replaced. This allows you to keep using a machine you already know and which may still provide many more years of service.

Main spare parts for Scheppach MS175-51

Many components of the Scheppach MS175-51 can be replaced individually. In this category, you may find:

• 510 mm lawn mower blade.

• M10 x 40 blade fixing bolt.

• Blade holder.

• 737Li V-belt.

• Belt guard.

• Front wheel 175 x 50 mm.

• Rear wheel 250 x 61.5 mm.

• Recoil starter.

• Ignition coil.

• Tension spring.

• Drive bar.

• Carburettor gasket set.

• 1190 mm drive cable.

• 1270 mm throttle cable.

• Grass collector bag.

• Fuel hose.

• Lower handlebar.

• Deflector and housing components.

These parts allow you to repair the main systems of the machine: cutting, self-propelled drive, wheels, starting system, engine, controls and grass collection.

510 mm blade for Scheppach MS175-51

The blade is probably one of the parts that needs the most attention on a lawn mower. It works directly in contact with the grass and, unfortunately, sometimes also with stones, roots or objects hidden in the garden.

The MS175-51 uses a 510 mm blade. Over time, the cutting edge becomes dull and the quality of the cut deteriorates. You may notice that the grass looks torn rather than cleanly cut or that certain areas require several passes.

The blade can also become bent after a significant impact. In this case, it is important not to look only at the cutting edge. Unusual vibrations should always lead you to inspect the complete cutting system.

A worn or damaged blade can cause:

• Uneven cutting.

• Poorer lawn finish.

• Tearing of the grass.

• Unusual vibrations.

• Excessive stress on the blade holder and engine shaft.

Replacing a worn blade is a normal maintenance operation and can often immediately restore a much cleaner cutting result.

Blade holder and fixing bolt

If the blade has suffered a significant impact, the blade holder should also be inspected.

It connects the engine shaft to the blade. If this component is bent or damaged, fitting a new blade may not be enough to eliminate vibrations.

It is therefore useful to check:

• The blade.

• The blade holder.

• The fixing bolt.

• The engine shaft.

• Any play or deformation.

The M10 x 40 blade fixing bolt is also an important component. Its thread must remain in good condition and allow the blade assembly to be tightened correctly.

737Li belt for the self-propelled drive

The Scheppach MS175-51 features a self-propelled drive system designed to make moving the mower easier during use.

The 737Li V-belt is involved in transmitting power through the drive system. Like all belts, it operates under constant tension and can gradually wear out.

A worn belt may:

• Become loose.

• Stretch.

• Crack.

• Wear along the sides.

• Slip.

• Eventually break.

A typical symptom is a lawn mower whose engine runs normally but whose self-propelled drive becomes weak, irregular or stops working completely.

However, the belt is not always the only possible cause. The drive cable, tension spring or other transmission components may also be responsible.

Belt guard

The belt guard protects the drive system against grass clippings, dust and small debris.

If it is broken or missing, the belt and surrounding components become more exposed to dirt and foreign objects.

It is an easy part to overlook, but keeping it in good condition helps protect the transmission system over the long term.

1190 mm drive cable

The 1190 mm drive cable transmits the command from the handlebar to the self-propelled mechanism.

After years of use, a Bowden cable can become loose, seize inside its outer casing or begin to fray.

Common signs include:

• Self-propelled drive engaging poorly.

• A control lever that feels unusually loose.

• Excessive lever travel.

• A cable that is difficult to move.

• Complete cable breakage.

If the self-propelled drive stops working, checking the cable is a sensible first step before assuming that there is a more serious transmission problem.

1270 mm throttle cable

The 1270 mm Bowden throttle cable connects the handlebar control to the corresponding engine mechanism.

It is also operated every time the mower is used. Its outer casing may become damaged, while the inner cable can stretch or begin to seize.

A throttle control that becomes stiff or inaccurate does not necessarily indicate an engine problem. The cable itself may simply be worn.

175 x 50 mm front wheel

The front wheels are constantly subjected to stress from turns, uneven ground, holes and garden borders.

The 175 x 50 mm front wheel may eventually develop tread wear or excessive play.

A wheel should be replaced when it shows:

• Cracking.

• Deformation.

• Significant wear.

• Excessive play.

• Difficulty rotating.

Wheels in good condition also make the lawn mower easier and more comfortable to manoeuvre.

250 x 61.5 mm rear wheel

The 250 x 61.5 mm rear wheel is even more heavily used on a self-propelled lawn mower.

It not only supports and moves the machine but also works in conjunction with the drive system.

If the lawn mower moves irregularly or one wheel develops excessive play, both the wheel and the associated mechanical drive components should be inspected.

Recoil starter for Scheppach MS175-51

The recoil starter is used every time the engine is started. Although it appears relatively simple, it contains several components that can wear out, including the starter rope, return spring and engagement mechanism.

Common problems include:

• Broken starter rope.

• Rope that no longer retracts.

• Starter spinning without engaging.

• Jammed mechanism.

• Difficulty turning the engine.

If the engine turns normally when you pull the starter but does not start, the recoil starter is probably not the cause. In that case, the ignition, fuel supply or carburettor should be checked.

Ignition coil

The ignition coil helps produce the spark required for the engine to run.

If there is an ignition problem, the coil may be one of the components involved, but it should not automatically be replaced.

Before replacing it, it is advisable to check:

• The spark plug.

• Electrical connections.

• Whether a spark is present.

• Any safety systems.

• The general condition of the ignition circuit.

Correctly identifying the fault helps avoid replacing parts that are still working properly.

Carburettor gasket set

The carburettor gasket set helps restore proper sealing between the different carburettor components and mounting surfaces.

Older gaskets can harden, become compressed or lose their sealing properties. This may result in air leaks and affect engine operation.

When the carburettor itself is still in good condition, replacing the gaskets may sometimes be enough to solve the problem.

Fuel hose

The fuel hose carries petrol to the engine and is continuously exposed to fuel and temperature changes.

On certain MS175-51 lawn mowers manufactured from 07/2021 onwards, a Ø 6 / Ø 3 x 45 mm fuel hose is used.

An ageing fuel hose may:

• Harden.

• Crack.

• Become porous.

• Split.

• Start leaking.

Any fuel leak should be taken seriously, and a damaged fuel hose should be replaced promptly.

Tension spring and drive bar

The self-propelled system also includes simple but essential mechanical components such as the tension spring and drive bar.

A stretched, broken or deformed spring can affect the operation of the mechanism.

The drive bar may also become bent or damaged after several years of use.

With this type of problem, observing how the mechanism moves when the drive lever is operated can help identify which component is no longer performing its function correctly.

Grass collector bag

The grass collector bag is subjected to friction, the weight of grass and repeated handling.

Over time, it may tear or lose its shape.

When the grass collector frame is still in good condition, it makes much more sense to replace only the bag rather than the complete collector.

This is a good example of how replacing one simple spare part can considerably extend the useful life of a lawn mower.

Lower handlebar, deflector and housing parts

Some parts need replacing less frequently but can still be damaged by an impact, poor storage conditions or simply years of use.

These include:

• Lower handlebar.

• Deflector.

• Certain housing components.

• Fixings and fasteners.

Replacing these components allows the machine to be properly restored rather than continuing to use it with a bent or broken part.

Check your MS175-51 carefully before ordering

Even when a part is listed for the Scheppach MS175-51, it is always advisable to identify your exact machine before placing an order.

To avoid ordering the wrong part, check:

• Exact model.

• Serial number.

• Month of manufacture.

• Year of manufacture.

• Part number required.

• Part number shown on the exploded diagram.

• Any reference still visible on the original part.

This is particularly important for drive belts, cables, wheels, engine parts and transmission components.

Two parts can look almost identical while having different dimensions or specifications.

Simple maintenance to keep your MS175-51 running longer

A regularly maintained lawn mower can remain useful for many years.

A few simple habits can make a real difference:

• Clean the cutting deck after mowing.

• Avoid leaving wet grass accumulated underneath the machine.

• Check the blade regularly.

• Inspect the drive belt at the beginning of the season.

• Check that the cables move freely.

• Clean or inspect the air filter.

• Check the condition of the wheels.

• Regularly check the engine oil level.

• Inspect the fuel hoses.

• Store the lawn mower in a dry place.

There is no need to wait for a complete breakdown. A component showing early signs of wear is often much easier to replace before it causes damage to other parts.

Repair rather than replace your Scheppach MS175-51 lawn mower

When you have owned a lawn mower for several years and know how it performs, it can be frustrating to consider replacing the entire machine simply because of a worn belt, broken cable or damaged wheel.

That is exactly why spare parts are so useful: they allow you to keep using a machine that is still in good overall working condition.

A new blade can restore a clean cut, a new cable can bring the self-propelled drive back to life, and replacing a worn wheel can make the mower easy to manoeuvre again.

Browse this category to find the main spare parts for the Scheppach MS175-51 lawn mower and replace only what is genuinely worn or damaged.