John Deere Z345M: Parts, Manuals, Diagrams, Specs

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John Deere Z345M

The John Deere Z345M is a residential zero-turn mower designed for efficiency, comfort, and performance. Powered by a 22-horsepower V-twin Briggs & Stratton engine, it delivers reliable cutting power and smooth operation. The mower features a 42-inch Accel Deep™ deck, which enhances mowing performance and versatility. This deck can be equipped with an optional MulchControl™ kit for improved mulching capability or a 6.5-bushel rear bagger for grass collection.

Built with a heavy-duty formed and welded steel frame, the Z345M ensures durability and stability during operation. It includes hydrostatic transmission and twin motion-control levers for precise speed and direction control, offering a forward speed of up to 7 mph. The mower’s compact design and zero-turn capability make it highly maneuverable, suitable for navigating tight spaces and complex landscapes.

The operator station is designed for comfort, featuring an 18-inch medium-back seat with armrests and an adjustable foot platform. The controls are intuitive and easily accessible, enhancing ease of use. Maintenance is simplified with features such as a replaceable fuel filter, oil filter, and a wash port for cleaning the deck.

Additional specifications include a fuel tank capacity of 2.1 gallons, air cooling, and electric PTO engagement. The mower’s cutting height can be adjusted in 0.25-inch increments between 1 to 4 inches. Weighing approximately 496 pounds with fuel, the Z345M is compact yet robust.

Manufactured in Greeneville, Tennessee, the Z345M represents an entry-level option in John Deere’s ZTrak series, priced originally at $2,799 in 2021. Its combination of power, precision, and user-friendly features makes it an excellent choice for homeowners seeking efficient lawn care solutions.

John Deere Z345M Price

The John Deere Z345M is a popular zero-turn mower available in both new and used conditions in the USA. Here’s an overview of its pricing:

The price of a new John Deere Z345M varies slightly depending on the dealer and location. As of early 2025, the typical price range for a new Z345M is between $2,997 and $3,200. This price includes the standard 42-inch Accel Deep™ mower deck and a 22 HP gas engine.

Used Z345M models are available at significantly lower prices, with the cost varying based on the mower’s age, condition, and hours of use. Here’s a general breakdown:

Recent Models (2022-2024):
Used Z345M mowers from recent years typically range from $2,400 to $2,600. These models usually have low hours, often under 100, and are in excellent condition.

Older Models (2019-2021):
Prices for older used Z345M mowers generally fall between $1,900 and $2,300. These models may have higher usage hours but still offer good value for homeowners.

Heavily Used or Older Models:
Z345M mowers that are several years old or have seen extensive use can be found for as low as $1,500 to $1,800. These may require some maintenance but can be a budget-friendly option for those willing to perform upkeep.

It’s important to note that prices can fluctuate based on local market conditions, seasonal demand, and the overall condition of the mower. Buyers should always inspect used mowers thoroughly and consider factors such as maintenance history and remaining warranty when making a purchase decision.

John Deere Z345M Parts

The John Deere Z345M zero-turn mower has a wide range of available parts for maintenance, repair, and customization. Here’s an overview of the key parts and components:

The Z345M is equipped with a V-twin Briggs & Stratton engine. Essential engine parts include:

  • Oil filter (AM125424)

  • Fuel filter (AM116304)

  • Air filter (MIU14395)

  • Spark plug (MIU11020)

  • Engine oil (10W-30 Turf-Gard)

The 42-inch Accel Deep mower deck requires several specific parts:

  • Mower blades (various types available)

  • Mower deck belt (GX25628)

  • Spindles (AM144608)

  • Pulleys and idlers

Key electrical parts for the Z345M include:

  • Battery (TY25878)

  • Ignition switch (TCA22740)

  • PTO switch (AM147972)

  • PTO clutch (AM141536)

The hydrostatic transmission system includes:

  • Traction drive belt (GX26401)

  • Hydraulic fluid

  • Drive wheels (18×8.50-8)

  • Caster wheels (various options)

Enhance your Z345M’s capabilities with:

  • MulchControl kit (BM24794)

  • Rear bagger system

Regular maintenance requires:

  • Grease gun and grease

  • Mower deck leveling gauge (AM130907)

Other important parts include:

  • Fuel cap (GX23465)

  • Seat components

  • Control levers

  • Safety switches

When servicing or upgrading your John Deere Z345M, always use genuine John Deere parts to ensure optimal performance and longevity of your zero-turn mower.

John Deere Z345M Reviews

The John Deere Z345M zero-turn mower has received generally positive reviews from users and experts alike. This residential-grade mower is praised for its performance, ease of use, and comfort, making it a popular choice for homeowners with medium-sized lawns.

Users report that the Z345M delivers excellent cutting results with its 42-inch Accel Deep™ mower deck. The 22-horsepower V-twin engine provides ample power for most mowing conditions, allowing for efficient and clean cuts. Many reviewers appreciate the mower’s ability to handle tough grass and maintain a consistent cut height.

Reviewers consistently mention the Z345M’s user-friendly design. The twin-lever controls are intuitive, and most users find that they quickly adapt to the zero-turn steering system. The mower’s maneuverability is a standout feature, with many praising its ability to navigate around obstacles and tight spaces effortlessly.

The comfort of the Z345M receives high marks from users. The 18-inch medium-back seat with armrests is frequently mentioned as a comfortable feature, especially for longer mowing sessions. The adjustable foot platform also contributes to a more ergonomic operating position.

Many reviewers comment on the solid construction of the Z345M. The heavy-duty frame and quality components contribute to its durability, with several users reporting reliable performance over multiple seasons.

While the Z345M has a relatively small 2.1-gallon fuel tank, users often note that it is surprisingly fuel-efficient. Many report being able to mow their entire property without needing to refuel.

Opinions on value vary, with some users feeling the Z345M is priced competitively for its features and performance, while others consider it a bit expensive. However, most agree that the quality and reliability of the John Deere brand justify the investment.

Some users mention that the lack of a deck lift pedal (available on higher models) can be inconvenient. A few reviewers also note that the mower can struggle on very steep inclines.

Overall, the John Deere Z345M receives positive reviews for its performance, ease of use, and comfort, making it a solid choice for homeowners looking for an efficient and reliable zero-turn mower.

John Deere Z345M Blades

The John Deere Z345M zero-turn mower uses 42-inch blades for its Accel Deep™ mower deck. There are several blade options available for this model, each designed for specific mowing applications:

  1. Standard Three-in-One Blade: This versatile blade can be used for side discharge, mulching, or bagging. It features a dual-height cutting surface with a slight angle at the end.

  2. Mulching Blade: Designed specifically for mulching, this blade has a longer cutting surface on the raised portion compared to the standard blade. It provides better mulching performance by cutting grass into finer pieces.

  3. High Lift Blade: Ideal for bagging applications, this blade has a more pronounced angle starting midway up the blade. It’s also suitable for side discharge.

  • Length: 42 inches

  • Part Number: UC22008 (set of 2 blades)

  • Replaces older part number M170639

The choice of blade depends on your mowing preferences:

  • For general use, the standard three-in-one blade works well.

  • If you primarily mulch, use the dedicated mulching blade for better results.

  • For bagging or improved discharge, opt for the high lift blade.

It’s recommended to use the specific blade that comes with optional kits (like mulching or bagging kits) for optimal performance.

Remember to replace blades when they become dull or damaged to maintain cutting quality and lawn health. Always use genuine John Deere blades for the best fit and performance on your Z345M mower.

John Deere Z345M Belt Drive Diagram

To find a belt drive diagram for the John Deere Z345M zero-turn mower, you can refer to the following resources:

  1. : The operator’s manual for the Z345M includes detailed diagrams of the belt drive system, showing how the belts are routed around pulleys and spindles. This is the most reliable source for accurate and model-specific information.

  2. : Online parts catalogs, such as those provided by John Deere dealers or third-party retailers, often include exploded diagrams of the mower’s components, including the belt drive system. These diagrams can help you identify part numbers and understand the assembly.

  3. : Websites like Weingartz or Green Farm Parts provide easy-to-use diagrams for specific mower models, including the Z345M. These diagrams show the layout of belts, spindles, and sheaves.

  4. : Video guides on platforms like YouTube often demonstrate belt replacement or maintenance procedures for similar John Deere models. These can be helpful if you need a visual reference.

For the Z345M specifically, the mower deck belt (part number GX25628) and its routing are essential to proper operation. Always ensure you follow safety protocols when replacing or adjusting belts.

John Deere Z345M Belt Drive Replacement

Replacing the belt drive on a John Deere Z345M zero-turn mower involves changing both the mower deck drive belt and the traction drive belt. Here’s a guide to replacing these belts:

The mower deck drive belt (part number GX25628) is 118 inches long and fits the 42-inch Accel Deep Deck on the Z345M. To replace this belt:

  1. Remove tension from the belt by using a 1/2-inch drive ratchet in the square hole on the idler pulley arm.

  2. Unhook the belt from the engine pulley and remove it from around the deck pulleys.

  3. Install the new belt, ensuring it’s routed correctly according to the deck’s belt routing diagram.

  4. Reapply tension to the belt using the idler pulley.

The traction drive belt (part number GX26401) should be replaced every 100 hours or annually. To replace this belt:

  1. Remove the mower deck to access the traction drive belt.

  2. Locate the spring-loaded idler pulley for the traction belt.

  3. Release tension on the belt by moving the idler pulley.

  4. Remove the old belt and install the new one, following the proper routing around the pulleys.

  5. Reapply tension to the belt using the idler pulley.

  • Always refer to your operator’s manual for specific instructions and safety precautions.

  • Inspect belts regularly for wear and replace them before they fail.

  • Ensure the new belt is not twisted when installing.

  • After installation, run the mower at low speed to check for proper belt alignment and tension.

Remember to disconnect the spark plug wire before performing any maintenance on your mower to ensure safety.

John Deere Z345M Oil Capacity

The John Deere Z345M zero-turn mower has an oil capacity of 64 ounces (1.9 liters). This is equivalent to 2 U.S. quarts.

The recommended oil type for the Z345M is SAE 10W-30 engine oil. John Deere specifically recommends using Turf-Gard 10W-30 oil for this model.

When performing an oil change on the Z345M:

  1. Drain the old oil using the drain tube located on the mower.

  2. Replace the oil filter.

  3. Fill the engine with 2 quarts (64 ounces) of fresh 10W-30 oil.

It’s important to check and maintain proper oil levels for optimal engine performance and longevity. Regular oil changes should be performed according to the maintenance schedule outlined in the operator’s manual.

John Deere Z345M Problems

The John Deere Z345M zero-turn mower, while generally reliable, can experience some issues. Here’s an overview of common problems reported by users:

Some Z345M owners have reported engine-related problems, including:

  • Surging or losing power, especially when going uphill or under load

  • Stalling or dying unexpectedly while in use

  • Difficulty starting, particularly after periods of storage

These issues may be related to fuel system problems, such as clogged fuel filters or degraded fuel, or could indicate carburetor issues.

Electrical system issues have been noted by some users:

  • Ignition switch failures, making it difficult to start the mower

  • Battery-related problems, including weak or dead batteries

  • Issues with the circuit board, potentially causing various electrical malfunctions

The fuel system can be a source of problems for the Z345M:

  • Clogged or collapsed fuel filters

  • Fuel line degradation or blockages

  • Carburetor issues, including debris accumulation

Some users have reported issues with the drive system:

  • Uneven tension in the drive controls, particularly noted in the left drive control

  • Belt wear or misalignment, affecting mower performance

While less common, some users have experienced problems with the mower deck:

  • Uneven cutting, which may be due to deck misalignment or blade issues

  • Blade rotation issues, potentially posing a safety hazard

Some owners have noted that certain maintenance tasks can be challenging:

  • Difficulty accessing certain parts for replacement or servicing

  • Oil changes can be messy due to the design of the oil filter location

While these issues have been reported by some users, it’s important to note that many Z345M owners have positive experiences with their mowers. Regular maintenance and prompt attention to any developing issues can help ensure the longevity and performance of the machine.

John Deere Z345M Bagger Kit

The John Deere Z345M zero-turn mower is compatible with a 6.5-bushel (229-liter) rear bagger kit. This bagger kit efficiently collects grass clippings and other material from the 42-inch Accel Deep mower deck.

  • 6.5-bushel (229-liter) capacity

  • Two durable collection bags

  • Hopper design for efficient bagging and easy emptying

  • Includes chute, ballast, attachment bar, and hitch

  • Compatible with the 42-inch Accel Deep mower deck on the Z345M

The bagger kit attaches to the rear of the mower and includes all necessary components for installation. It may require replacing the existing discharge chute and adding a ballast bracket to the front of the mower for proper weight distribution.

  • Improves lawn appearance by collecting clippings

  • Reduces the need for raking or additional cleanup after mowing

  • Allows for easy disposal of collected material

  • Provides versatility to the mowing system

The rear bagger kit enhances the functionality of the John Deere Z345M, making it a more versatile tool for maintaining a well-groomed lawn.

John Deere Z345M Battery

The John Deere Z345M zero-turn mower uses a 12-volt battery with 300 Cold Cranking Amps (CCA). This battery is designed to provide reliable starting power for the mower’s engine, which is particularly important in colder weather conditions.

Key specifications for the Z345M battery include:

  • Voltage: 12V

  • Cold Cranking Amps (CCA): 300

  • Type: Lead-acid

To maintain optimal battery performance:

  1. Keep the battery fully charged, especially during winter storage.

  2. Clean the battery terminals regularly to prevent corrosion.

  3. Check the electrolyte levels in non-sealed batteries and top up with distilled water if necessary.

  4. Use a trickle charger during long periods of inactivity to prevent battery discharge.

For battery replacement, it’s recommended to use a genuine John Deere battery or one that meets the same specifications to ensure proper fit and performance. Regular maintenance and proper storage practices will help extend the life of your Z345M’s battery and ensure reliable starting throughout the mowing season.

FAQ


The oil should be changed every 50 hours or annually, whichever comes first.


The Z345M uses SAE 10W-30 engine oil. John Deere recommends using Turf-Gard 10W-30 oil.


To level the mower deck, use a mower deck leveling gauge and adjust the deck hangers according to the instructions in the operator’s manual.


The Z345M uses 42-inch blades for its Accel Deep mower deck.


Blades should be sharpened or replaced every 50 hours or annually, whichever comes first.


The Z345M has a fuel tank capacity of 2.1 gallons.


Yes, the Z345M is compatible with a 6.5-bushel rear bagger kit.


Keep the battery fully charged, clean the terminals regularly, and use a trickle charger during long periods of inactivity.


The cutting height can be adjusted from 1 to 4 inches in 0.25-inch increments.


Check the battery, fuel system, spark plug, and starter solenoid. Ensure all connections are secure and the fuel is fresh.