The Scheppach MS173-46 and Woodstar TT173-46 petrol lawn mowers are designed for regular maintenance of lawns and green spaces. With their 46 cm cutting width, they offer a good balance between mowing efficiency, manoeuvrability and user comfort. Their petrol engine and self-propelled drive system make them suitable for a wide range of garden sizes.

Over the seasons, a lawn mower is exposed to many stresses: vibration, grass clippings, dust, possible impacts with stones or roots, and the natural wear of mechanical components. Some parts may therefore need to be replaced in order to keep the machine reliable and efficient.

This category brings together a selection of replacement parts for Scheppach MS173-46 and Woodstar TT173-46 lawn mowers: blade, blade holder, drive belt, carburettor, wheels, recoil starter, spark plug, ignition coil, cables, levers, drive gears, grass collector and other components required for maintenance and repair.

A wide range of parts for Scheppach MS173-46 and Woodstar TT173-46

Many mechanical components and wear parts can be replaced individually on these lawn mowers, including:

• 460 mm lawn mower blade.

• Blade holder.

• Blade fixing bolt.

• 660Li drive belt.

• Carburettor.

• Recoil starter.

• Ignition coil.

• Spark plug.

• Front wheel.

• Rear wheel.

• Drive gear.

• Throttle cable.

• Control cable.

• Drive lever.

• Brake lever.

• Grass collector support.

• Grass collector.

• Springs.

• Pins.

• Washers.

• Handles and handlebar knobs.

• Cutting deck cleaning connector.

• Cylinder head kit for certain production series.

• Screws and other mechanical parts.

This range allows you to work on the main systems of the lawn mower: cutting system, engine, starting system, ignition, self-propelled drive, wheels, controls and grass collection.

460 mm blade for Scheppach MS173-46

The blade is naturally one of the most heavily used components of a lawn mower. The Scheppach MS173-46 uses a 460 mm blade, suitable for its 46 cm cutting width.

During each use, the blade rotates at high speed and can gradually lose its cutting edge. It can also become damaged after hitting:

• A stone.

• A root.

• A branch.

• A kerb or border.

• A metal object.

• Any other obstacle hidden in the grass.

A blunt blade can tear grass instead of cutting it cleanly. A bent or badly damaged blade can also cause abnormal vibrations and put excessive stress on the blade holder and engine shaft.

It is therefore advisable to check the blade regularly and replace it when it is excessively worn or damaged.

Blade holder and fixing bolt

The blade holder connects the engine shaft to the blade. This component must remain in perfect condition to hold the blade securely and ensure smooth rotation.

After a significant impact, it is advisable to inspect:

• The blade.

• The blade holder.

• The fixing bolt.

• The engine shaft.

• Any unusual vibrations.

A bent blade holder can continue to cause imbalance even after a new blade has been installed.

The blade fixing bolt should also be checked. A damaged or unsuitable fixing component should not be reused if it can no longer ensure proper tightening.

660Li drive belt and self-propelled system

The self-propelled drive system allows the lawn mower to move forward without having to be pushed continuously. This system uses several mechanical components, including the 660Li drive belt on compatible versions.

Over time, a drive belt may:

• Stretch.

• Become loose.

• Wear along the sides.

• Crack.

• Slip.

• Eventually break.

If the engine operates correctly but the lawn mower moves forward with difficulty or no longer drives itself, it is advisable to inspect the entire drive system rather than automatically replacing the belt.

The problem may also come from a cable, drive gear, lever or another transmission component.

Drive gears and wheel transmission components

On a self-propelled lawn mower, motion must be transmitted all the way to the wheels. The drive gears are among the components that can gradually wear over time.

Worn gear teeth can cause poor power transmission, jerky operation or loss of drive.

When inspecting this system, it is also advisable to check:

• The wheels.

• Drive gears.

• Axles.

• Pins.

• Washers.

• Drive cable.

• Control mechanism.

Checking the complete system makes it easier to identify the exact cause of a drive problem.

Front and rear wheels

The wheels are subjected to significant loads throughout the life of the lawn mower.

Repeated operation on uneven ground can lead to wear of the tread, hub or drive-related components.

Depending on the version, various parts may be available, including front and rear wheels. Some rear wheels may have approximate dimensions of 245 x 70 mm, depending on the model version.

A wheel should be replaced if it shows significant wear, cracking, deformation or excessive play that affects normal movement of the machine.

Carburettor for Scheppach MS173-46

The carburettor plays an essential role in the operation of the petrol engine. It controls the air-fuel mixture before it enters the engine.

Carburettor-related problems may cause:

• Starting difficulties.

• Irregular engine operation.

• Engine speed fluctuations.

• Loss of power.

• Repeated stalling.

However, these symptoms can also have other causes. Before replacing the carburettor, it is therefore advisable to check the fuel supply, spark plug, air filter and ignition system.

A replacement carburettor can restore proper operation when diagnosis confirms that this component is responsible for the fault.

Recoil starter for your lawn mower

The recoil starter is used every time the engine is started. Its rope, return spring and internal mechanism are therefore subject to regular wear.

Signs that may indicate a recoil starter problem include:

• Starter rope no longer retracts.

• Broken starter rope.

• Starter spins without engaging.

• Mechanism no longer drives the engine correctly.

• Starter system becomes blocked.

Replacing the complete recoil starter may be necessary if the mechanism is too badly damaged to repair.

Spark plug and ignition coil

For the engine to start and run correctly, the ignition system must be in good condition.

The spark plug is one of the maintenance components that should be checked regularly. A dirty or heavily worn spark plug can cause starting difficulties or irregular engine operation.

The ignition coil may also need to be checked if a proper spark is not being produced.

Before replacing the ignition coil, it is preferable to inspect the complete ignition system to confirm the diagnosis.

Throttle cable and control cables

Scheppach and Woodstar lawn mowers use several cables to transmit commands from the handlebar to the corresponding mechanisms.

These include the Bowden throttle cable, as well as other control cables used for the various mower functions.

Over time, a cable may:

• Stretch.

• Fray.

• Seize inside its outer casing.

• Become bent.

• Break.

Some cables are specific to a particular lawn mower production series. It is therefore essential to check the part number, length and compatibility before purchasing.

Drive and brake levers

The handlebar includes several controls used to operate the lawn mower.

The drive lever controls the self-propelled system on equipped models, while the brake lever forms part of the machine's control and safety system.

These components are operated during every use and can wear, bend or become damaged after an impact.

Handles, nuts, locking knobs and other handlebar components can also be replaced individually.

Grass collector and support

The grass collector receives the cut grass when the lawn mower is used in collection mode.

Over time, the collector or its support can become damaged due to repeated handling, the weight of the grass or storage conditions.

Depending on the version of your machine, you may be able to replace:

• The grass collector.

• Its support.

• Fixing components.

• Other related grass collection parts.

Replacing only the damaged component avoids unnecessary replacement of the entire collector when the other parts are still in good condition.

Cutting deck cleaning connector

Some lawn mowers feature a garden hose connection on the cutting deck. This connector makes it easier to clean the underside of the deck after mowing.

Regular cleaning helps reduce the accumulation of wet grass, which can promote corrosion and interfere with proper discharge of grass clippings.

This connector can also be replaced if it becomes broken or damaged.

Cylinder head kit and engine parts for certain production series

Some Scheppach and Woodstar lawn mower versions may use specific engine components, including a complete cylinder head kit for certain machines in production series no. 0177.

For this type of engine part, it is especially important not to rely only on the model name.

The serial number and part number shown in the machine documentation must be checked before ordering.

Pay attention to different production series

The Scheppach MS173-46 and Woodstar TT173-46 may have been produced in different series, and some parts can vary depending on the production period.

An identical model designation does not therefore guarantee that every replacement part listed for that model will fit every machine produced.

Before ordering, we recommend checking:

• Exact model.

• Machine reference.

• Serial number.

• Month and year of manufacture.

• Part number required.

• Exploded parts diagram corresponding to your machine.

• List of compatible machines shown on the product page.

This check is particularly important for carburettors, drive belts, cables, recoil starters, wheels, engine parts, blade holders and transmission components.

How to identify the correct part for your MS173-46 or TT173-46

The most reliable method is to identify your machine using its rating plate, then locate the required part number on the exploded parts diagram corresponding exactly to that version.

If the old part still has a readable part number, this is also useful information to compare.

It is not advisable to choose a replacement part only by comparing its appearance with the old component. Two visually similar parts may have different dimensions, mounting systems or technical specifications.

Regular maintenance of your Scheppach or Woodstar lawn mower

Regular maintenance helps extend the service life of your lawn mower and maintain good cutting performance.

It is particularly advisable to:

• Clean the cutting deck after use.

• Check the blade regularly.

• Check the blade fixing bolt for correct tightness.

• Inspect the blade holder after an impact.

• Monitor the condition of the drive belt.

• Check the operation of the self-propelled drive.

• Inspect the wheels and drive gears.

• Clean the air filter.

• Check the spark plug.

• Inspect cables and levers.

• Regularly check the engine oil level.

• Clean and inspect the grass collector.

Prompt replacement of a heavily worn part can also help prevent damage to other components.

Repair your Scheppach MS173-46 or Woodstar TT173-46

A lawn mower with a worn or damaged component does not necessarily need to be replaced. In many cases, targeted replacement of the affected part can restore proper operation and extend the service life of the machine.

Browse our selection of replacement parts for Scheppach MS173-46 and Woodstar TT173-46 lawn mowers: 460 mm blade, blade holder, blade bolt, 660Li drive belt, carburettor, wheels, drive gears, recoil starter, spark plug, ignition coil, cables, levers, grass collector and other mechanical parts.