Ferrex 173cc Lawn Mower Manual: A Comprehensive Guide
This manual details the Ferrex 173cc petrol lawn mower (models XSZ46I & 59085), offering assembly, operation, maintenance, and troubleshooting guidance for optimal performance.
The Ferrex 173cc lawn mower, available at ALDI stores, represents a cost-effective solution for maintaining gardens. This self-propelled petrol mower, including variants like the XSZ46I and the 59085 (electric start model), is designed for ease of use and reliable performance.
Manufactured in China under ALDI’s quality control, it boasts a 3-5 year warranty, demonstrating confidence in its durability. This manual provides comprehensive instructions, covering everything from initial assembly to routine maintenance, ensuring users can maximize the mower’s lifespan and achieve a beautifully manicured lawn.
Understanding the Model Number: XSZ46I & Similar Variants
The Ferrex model number, such as XSZ46I, provides key information about the lawn mower’s specifications. While slight variations exist, like the 59085 featuring electric start, the core 173cc engine and 4-stroke technology remain consistent across many models.
ALDI also offers a 225cc variant (MS225-53E) with a 5-year warranty. Understanding these distinctions is crucial when sourcing parts or referencing specific instructions. Although a dedicated manual for the 173cc model is sometimes hard to find, the 225cc manual can offer helpful insights due to shared components and operational principles.
Safety Precautions Before Operation
Prior to operating your Ferrex 173cc lawn mower, thoroughly inspect the mowing area, removing stones, toys, and debris. Always wear sturdy footwear and eye protection. Never operate the mower barefoot or with open-toed shoes.
Ensure the grass catcher is securely attached before starting. Refuel only when the engine is cool and in a well-ventilated area. Never mow wet grass, as it creates a slipping hazard. Keep children and pets well clear of the mowing area during operation and when performing maintenance.
Key Components and Their Functions
The Ferrex 173cc lawn mower features a robust 173cc, 4-stroke engine providing power for efficient cutting. The blade and cutting deck are designed for optimal airflow and mulching capabilities. The self-propelled drive system simplifies mowing on varied terrains, reducing operator fatigue.
Essential components include the fuel tank, oil reservoir, air filter, spark plug, and safety bail lever. The grass catcher collects clippings, while the side discharge chute allows for spreading. Understanding each component’s function is crucial for safe operation and effective maintenance of your mower.

Engine Specifications (173cc, 4-Stroke)

The Ferrex lawn mower is powered by a reliable 173cc, 4-stroke petrol engine, designed for efficient performance and ease of use. This engine type requires regular oil changes and air filter maintenance for optimal operation. It’s crucial to use the correct grade of petrol as specified in the full manual.
The 4-stroke design ensures cleaner emissions and quieter operation compared to 2-stroke engines. Key specifications include air-cooled cooling, a recoil starter (and electric start on the 59085 model), and a fuel capacity suitable for typical residential lawns.
Blade and Cutting Deck Overview
The Ferrex 173cc lawn mower features a robust cutting deck designed for durability and efficient grass collection. The blade is a standard rotary type, responsible for the clean cutting action. Regularly sharpening and balancing the blade is vital for a quality cut and to minimize mower vibration.
The deck allows for adjustable cutting heights, catering to various lawn conditions and preferences. Inspect the deck regularly for any damage or debris buildup. Ensuring the blade is securely fastened and in good condition is paramount for safe operation.
Drive System: Self-Propelled Mechanism
The Ferrex 173cc lawn mower incorporates a self-propelled drive system, significantly reducing user effort during mowing. This feature utilizes a rear-wheel drive configuration, providing enhanced traction and maneuverability, especially on inclines or uneven terrain.
The drive speed is typically adjustable, allowing users to match the pace to their walking speed and lawn conditions. Regularly check the drive cable for proper tension and lubrication to ensure smooth operation. Engaging and disengaging the self-propelled function is usually controlled by levers on the handle.
Assembly Instructions
Prior to initial use, complete assembly is required. Begin by carefully unpacking all components and verifying against the parts list in the manual. Attaching the handle involves aligning it with the mower deck and securing it with the provided bolts and washers – ensure a firm, stable connection.
Next, install the grass catcher by sliding it onto the designated mounting points. Finally, adjust the cutting height using the levers located near each wheel; multiple height settings are available. Always double-check all connections before operating the mower for safety.
Attaching the Handle
Begin by aligning the lower handle section with the mower deck, ensuring the control cables are not pinched or obstructed. Secure the handle using the bolts, washers, and nuts provided in the hardware pack. Tighten these fasteners firmly, but avoid over-tightening, which could damage the plastic components.

Once the lower section is secure, attach the upper handle portion, again using the provided hardware. Verify the handle is stable and doesn’t wobble before proceeding. Proper handle attachment is crucial for safe and comfortable operation of the Ferrex 173cc lawn mower.
Installing the Grass Catcher

To install the grass catcher, carefully align the frame of the catcher with the designated mounting points located at the rear of the mower deck. Slide the frame downwards until it securely clicks into place. Ensure it’s firmly attached before use to prevent accidental detachment during mowing.
Next, stretch the fabric bag over the frame, ensuring it’s evenly distributed and properly secured. A snug fit is essential for efficient grass collection. Regularly empty the grass catcher to maintain optimal mowing performance and prevent clogging.
Adjusting the Cutting Height
The Ferrex 173cc mower features adjustable cutting heights, typically controlled by levers located near each wheel. These levers allow you to select your desired grass length, ranging from higher settings for longer grass to lower settings for a manicured finish.
To adjust, simply squeeze the lever and move it to the corresponding height setting. Ensure all four wheels are set to the same height for an even cut. Regularly check the settings before each use, especially if mowing varying grass lengths.
Starting the Lawn Mower
Before starting, ensure the mower is on a level surface and the blade is disengaged. Check the fuel and oil levels – the 173cc engine requires petrol and proper lubrication. For models with an electric start (like the 59085), insert the key and turn it to the start position.
If using a recoil starter, prime the engine by pressing the primer bulb several times. Then, firmly pull the starter cord with a smooth, controlled motion. Avoid rapid pulls. Once started, allow the engine to warm up before engaging the drive system.

Fueling the Engine (Petrol Requirements)
Always fuel the Ferrex 173cc lawn mower outdoors in a well-ventilated area, away from open flames or sparks. Use fresh, unleaded petrol with a minimum octane rating of 87; Avoid fuel blends containing ethanol exceeding 10%, as this can damage the engine.
Before refueling, ensure the engine is switched off and cool. Carefully remove the fuel cap and use a funnel to prevent spills. Do not overfill the tank, leaving some space for expansion. Wipe up any spilled fuel immediately and securely replace the fuel cap.
Checking the Oil Level
Maintaining the correct oil level is crucial for the Ferrex 173cc engine’s longevity. Before each use, and after every 5 hours of operation, check the oil level. Ensure the mower is on a level surface. Remove the dipstick, wipe it clean, reinsert it fully, and then remove it again to read the level.
The oil should be between the minimum and maximum marks on the dipstick. If low, add the recommended 4-stroke engine oil (SAE 30 is typical) slowly, rechecking the level until correct. Avoid overfilling.
Electric Start Procedure (If Applicable ― 59085 Model)
For the Ferrex 173cc model 59085, featuring electric start, ensure the mower is on a level surface and the brake lever is engaged. Insert the key into the ignition and turn it to the ‘ON’ position. Press and hold the safety button, then press the start button.
Release the start button once the engine fires; If the engine doesn’t start after a few attempts, allow it to cool before trying again. Always disconnect the spark plug wire before performing any maintenance.
Operating Instructions
Before each use, inspect the lawn for obstacles. Begin mowing with the discharge chute clear, overlapping each pass by a few inches for a clean cut. Adjust the mowing speed to suit the grass conditions – slower for thicker grass.
Utilize the side discharge for taller grass or larger areas. Engage the mulch function for finely chopped clippings, returning nutrients to the lawn. Regularly empty the grass catcher to maintain optimal performance and prevent clogging. Always disengage the blades before crossing gravel paths.
Proper Mowing Techniques
For a healthy lawn, avoid cutting more than one-third of the grass blade length at a time. Overlapping each mowing pass by a few inches ensures a consistent cut and prevents scalping. Vary your mowing pattern with each cut to promote upright growth and prevent soil compaction.
Mow when the grass is dry for the cleanest cut and to prevent clogging. Raise the cutting height during dry spells and lower it during periods of frequent rainfall. Regularly sharpen the blade for optimal performance and a healthier lawn.
Using the Side Discharge Function
The Ferrex 173cc mower features a side discharge chute for efficiently managing larger volumes of grass clippings. Ensure the chute is securely attached before operation. This function is ideal for mowing long grass or large areas where collecting clippings isn’t practical.
Adjust the cutting height to suit the grass length and desired finish. Be mindful of the discharge direction, avoiding areas with people, pets, or obstacles. Regularly check the chute for blockages to maintain optimal performance and prevent strain on the engine.

Utilizing the Mulch Function
The Ferrex 173cc lawn mower offers a convenient mulch function, finely chopping grass clippings and returning them to the lawn as a natural fertilizer. To activate, install the mulch plug (if not already fitted) which redirects the airflow.
Mulching is best suited for regularly mown lawns with moderate grass growth. Avoid mulching wet grass, as it can clump and hinder the process. Raise the cutting height slightly for optimal mulching performance. Regularly inspect the mulch plug for wear and tear, ensuring a secure fit for efficient operation.
Maintenance and Care
Regular maintenance ensures the longevity and optimal performance of your Ferrex 173cc lawn mower. Key tasks include routine oil changes – check the manual for recommended intervals and oil type. The air filter requires periodic cleaning or replacement, especially after mowing in dusty conditions.
Inspect the spark plug regularly, cleaning or replacing it as needed to maintain efficient ignition. Always disconnect the spark plug wire before performing any maintenance. Keep the cutting deck free from grass buildup to prevent corrosion and ensure clean cuts.
Regular Oil Changes
Maintaining the correct oil level is crucial for your Ferrex 173cc lawn mower’s engine health. Refer to the manual for the specified oil type and capacity. It’s recommended to change the oil after the first 25 hours of use, and then every 50 hours or annually, whichever comes first.
Always perform oil changes with the engine warm, but not hot, and on a level surface. Drain the old oil completely, replace the oil filter if applicable, and refill with the correct amount of fresh oil. Properly dispose of used oil at a designated recycling center.
Air Filter Cleaning/Replacement
A clean air filter ensures optimal engine performance and prevents damage. Regularly inspect the air filter – ideally before each use, or at least after every 25 hours of operation. If the filter is dirty, remove it and gently tap it to remove loose debris. For more stubborn dirt, wash the filter in warm, soapy water, rinse thoroughly, and allow it to dry completely before reinstalling.
If the air filter is damaged or excessively dirty, it should be replaced. A clogged or damaged filter restricts airflow, leading to reduced power and increased fuel consumption.
Spark Plug Inspection and Replacement
Regular spark plug inspection is crucial for maintaining efficient engine operation. Disconnect the spark plug wire before inspecting. Check the spark plug for signs of wear, fouling, or damage. A properly functioning spark plug should have a clean, light tan or gray color.
If the spark plug is blackened with carbon deposits, excessively worn, or damaged, it should be replaced. Use the correct spark plug specified for your Ferrex 173cc model. Ensure the new spark plug is properly gapped before installation, tightening it to the manufacturer’s recommended torque.
Blade Sharpening and Balancing
A sharp blade ensures a clean cut and healthy lawn. Regularly inspect the blade for dullness or damage. Disconnect the spark plug wire before blade work! Sharpen the blade using a metal file or a grinding wheel, maintaining the original angle.
After sharpening, it’s vital to balance the blade to prevent excessive vibration. Use a blade balancer to identify any heavy spots. Grind material from the heavier side until the blade is balanced. A balanced blade extends the mower’s lifespan and improves cutting performance. Reinstall securely.
Troubleshooting Common Issues
If the engine won’t start, check the fuel level, oil level, and spark plug connection. Ensure the choke is engaged correctly for cold starts. Excessive vibration often indicates an unbalanced blade – sharpen and balance it as described previously.
Uneven cutting can result from a dull blade, incorrect cutting height, or uneven ground. Adjust the cutting height and sharpen the blade. If problems persist, consult the full manual or ALDI support. Always disconnect the spark plug before any inspection or maintenance.
Engine Won’t Start
If your Ferrex 173cc engine fails to start, first verify sufficient fuel in the tank and the correct fuel type is used. Next, check the oil level – a low level triggers a safety shut-off. Ensure the spark plug wire is securely connected. For cold starts, engage the choke; for warm starts, avoid using it.
If equipped with electric start (model 59085), confirm the battery is charged and the cable connected. If still failing, inspect the spark plug for fouling and replace if necessary. Always disconnect the spark plug before troubleshooting.
Mower Vibrates Excessively
Excessive vibration in your Ferrex 173cc mower often indicates an imbalance in the blade. Stop the engine immediately and disconnect the spark plug wire for safety. Inspect the blade for damage – nicks, bends, or uneven wear. A damaged blade must be replaced or professionally sharpened and balanced.
Also, check that the blade is securely fastened to the engine shaft with the correct bolt and tightened to the manufacturer’s specification. Loose mounting hardware can cause significant vibration. Inspect the cutting deck for debris accumulation, as this can also contribute to imbalance.
Uneven Cutting
If your Ferrex 173cc mower leaves an uneven cut, first ensure the cutting height is set consistently across all wheels. Check for obstructions under the deck, like accumulated grass clippings or debris, hindering smooth blade rotation. A dull or damaged blade is a common cause; sharpen or replace it as needed.
Verify the blade is correctly installed – upside down or improperly fitted blades cause poor cutting. Also, ensure you’re not attempting to cut grass that’s too wet or too long; this strains the engine and results in an uneven finish. Maintain a steady walking pace during operation.

Warranty Information (3-5 Years)
ALDI Stores provides a warranty on Ferrex 173cc lawn mowers, typically ranging from 3 to 5 years, depending on the specific model (e.g., MS225-53E offers 5 years). This warranty covers manufacturing defects in materials and workmanship under normal residential use.
To make a claim, retain your original purchase receipt as proof of date and location of purchase. The warranty does not cover damage resulting from misuse, neglect, improper maintenance, or commercial application. Contact ALDI Stores directly at 1 SARGENTS ROAD MINCHINBURY NSW 2770, Australia, for warranty service.
Where to Find Additional Support
For further assistance with your Ferrex 173cc lawn mower, ALDI Stores is your primary point of contact. Reach them directly at their Australian headquarters: 1 SARGENTS ROAD MINCHINBURY NSW 2770. Their website, www.aldi.com.au, also provides helpful resources and FAQs.
While a dedicated manual for the 173cc model may be limited, exploring resources for similar Ferrex mowers (like the 225cc model) can offer valuable insights. Online forums and user communities may also provide troubleshooting tips and shared experiences. Remember to prioritize safety and consult official ALDI documentation when possible.
ALDI Stores Contact Information (Australia ― 1 SARGENTS ROAD MINCHINBURY NSW 2770)
If you require direct support regarding your Ferrex 173cc lawn mower, contacting ALDI Stores Australia is recommended. Their distribution center is located at 1 SARGENTS ROAD, MINCHINBURY NSW 2770.
While specific technical support for this model may vary, ALDI’s customer service team can assist with warranty claims, product information, and potentially direct you to relevant resources. You can reach them through their website, www.aldi.com.au, or by contacting the store directly. Keep your purchase details handy when contacting them for efficient assistance.

Online Resources and FAQs
Although a dedicated FAQ section for the Ferrex 173cc model is limited, exploring online resources can be beneficial. Searching for the 225cc model’s manual may provide similar guidance, as designs share commonalities.
Web forums and online communities dedicated to lawn care often feature discussions about Ferrex mowers, potentially offering solutions to common issues. Google Search is invaluable; utilize specific keywords like “Ferrex 173cc troubleshooting” or “ALDI Ferrex mower problems.” Remember to verify information from unofficial sources.
Comparing the 173cc Model to Other Ferrex Mowers (225cc)
The Ferrex 173cc lawn mower represents a more accessible entry point compared to the 225cc model. While the 225cc offers increased power for larger or more challenging lawns, the 173cc is well-suited for smaller to medium-sized gardens.
Both models share core features like self-propelled functionality and mulch/side discharge options. However, the 225cc typically boasts a wider cutting deck and potentially more robust construction. Online resources suggest manuals for the 225cc model can sometimes offer helpful insights applicable to the 173cc, due to design similarities.
Understanding the ‘Made in China’ Origin
The Ferrex 173cc lawn mower, like many ALDI exclusive brand products, is manufactured in China. ALDI explicitly states a commitment to developing products to their own standards, regardless of origin. This doesn’t inherently reflect on quality; rather, it’s a sourcing decision based on cost-effectiveness and manufacturing capabilities.
ALDI provides a 3-5 year warranty, demonstrating confidence in the product’s durability despite its manufacturing location. Concerns about origin are common, but ALDI’s quality control processes aim to ensure consistent performance. The ‘Made in China’ designation simply indicates where the assembly takes place.

Google Search Tips for Ferrex Mower Information
When seeking information on the Ferrex 173cc lawn mower, utilize specific keywords like “Ferrex XSZ46I manual,” “Ferrex 59085 parts,” or “ALDI Ferrex mower troubleshooting.” Broad searches yield numerous results, but precision narrows the focus.
Explore image searches for diagrams and visual guides. Check for forum discussions where users share experiences and solutions. While a dedicated manual for the 173cc model is scarce, the 225cc model’s manual may offer comparable insights. Refine searches using “filetype:pdf” to locate downloadable manuals directly.
Password Security and Online Shopping (Related to ALDI Online Purchase)
When purchasing the Ferrex 173cc lawn mower online from ALDI, prioritize strong, unique passwords for your ALDI account and any payment methods used. Enable two-factor authentication whenever possible for enhanced security. Be cautious of phishing attempts; always verify the website address before entering credentials.
Chrome’s built-in password manager can assist in creating and storing secure passwords. Regularly update passwords and avoid reusing them across multiple platforms. Review ALDI’s privacy policy to understand how your data is handled. Secure online shopping protects your financial information and personal details during the purchase process;
Google Maps for Locating ALDI Stores
Need assistance finding an ALDI store to purchase a Ferrex 173cc lawn mower or seek support? Google Maps is an invaluable tool. Simply search “ALDI Australia” within the application or on the Google Maps website. The map will display nearby ALDI locations, complete with addresses, phone numbers, and operating hours.
Specifically, ALDI Stores’ distribution center is located at 1 SARGENTS ROAD MINCHINBURY NSW 2770. Utilize Google Maps’ navigation feature for turn-by-turn directions. Download the Google Maps app for convenient access on your mobile device, ensuring you can easily locate the nearest ALDI store.