Exmark 4500-686 Rev. B manual Operating Tips

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Operation

DANGER

If the discharge door does not close completely, the lawn mower could throw objects. Thrown objects can result in serious personal injury or death to the operator or bystanders.

•Never open the door to the discharge opening when the engine is running.

•If you cannot close the door because the grass clippings clog the discharge area, stop the engine and gently move the discharge door handle back and forth until you can close the door completely. If you still cannot close the door, remove the obstruction with a stick, not your hand.

Operating Tips

•Review the Safety section and read this manual carefully before operating the lawn mower.

•Set the engine speed to the fastest position for the best cutting results.

•Maintain a sharp blade throughout the cutting season. Periodically file down nicks on the blade. Replace the blade when necessary with an original Exmark replacement blade.

•Clean the air filter frequently. Mulching stirs up more clippings and dust which clogs the air filter and reduces engine performance.

Cutting Grass

•Grass grows at different rates at different times of the year. In the summer heat, it is best to cut grass at the 2 1/2 inch (64 mm), 3 inch (76 mm), or 3 1/2 inch (90 mm) cutting height settings.

Cut only about a third of the grass blade at a time. Do Not cut below the 2 1/2 inch (64 mm) setting unless the grass is sparse or it is late fall when grass growth begins to slow down.

•When cutting grass over 6 inches (15 cm) tall, first mow at the highest cutting height setting and walk slower; then mow again at a lower setting for the best lawn appearance. If the grass is too long and the grass clump on top of the lawn, the lawn mower may plug and cause the engine to stall.

•Alternate the mowing direction. This helps disperse the clippings over the lawn for even fertilization.

•If the finished lawn appearance is unsatisfactory, try one or more of the following:

–Sharpen the blade.

–Walk at a slower pace while mowing.

–Cut the grass more frequently.

–Overlap cutting swaths instead of cutting a full swath with each pass.

–Set the desired cutting height on the front wheels. Set the rear wheels one to two notches higher. For example, set the front wheels at 2 1/2 inches (64 mm) and the rear wheels at 3 inches (76 mm).

Cutting Leaves

•After cutting the lawn, ensure that half of the lawn shows through the cut leaf cover. You may need to make more than one pass over the leaves.

•For light leaf coverage, set all the wheels at the same cutting height setting.

•If there are more than 5 inches (12.7 cm) of leaves on the lawn, set the front cutting height one or two notches higher than the rear cutting height. This makes it easier to feed the leaves under the lawn mower deck.

•Slow down your mowing speed if the lawn mower does not cut the leaves finely enough.

•If you mow over oak leaves, you can add lime to the grass in the spring to reduce the acidity of the oak leaves.

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Contents Commercial California Introduction Contents Safety Alert Symbol SafetySafe Operating Practices TrainingSafety Operation Slope Operation Maintenance and StorageSafety and Instructional Decals 109-9317 116-1922 116-2685 117-2718 116-1900 116-2737 Dimensions SpecificationsModel Numbers SystemsOperation Product OverviewControls Blade Control BailThrottle-Choke Lever ECXHN21 Engine Stop SwitchChoke Control ECXHNBBC21 Blade Control Lock Lever Blade Brake Clutch Units OnlyHandle Adjustment Pre-StartOperating Instructions Starting the Engine Open the Fuel Shut-Off ValveStopping the Engine Using the Mulch PlugAuthorized Service Dealer Adjusting the Cutting Height Test Using the Grass BagUsing the Grass Bag Operating Tips Recommended Maintenance Schedules MaintenanceChecking the Blade Brake Clutch Blade Brake Clutch Only Check Engine Oil LevelCheck the Mower Blade Emptying the Fuel Tank and Cleaning the Fuel Filter sectionCheck for Loose Hardware Service Air Filter ECSHN21 Units Service Air Filter Kawasaki UnitsDamaged or excessively dirty Service Air Filter ECXHNBBC21 and ECXHN21 UnitsChange Engine Oil Change Oil Filter ECXKA21 and ECXKABBC21 Emptying the Fuel Tank and Cleaning the Fuel FilterCheck Condition Of Belt Self-Propelled Units Only Check Spark PlugsAdjusting the Self-Propel Drive Self-Propelled Units Only AdjustmentsAdjustment of drive cable nuts Clean Grass Build-Up Under Deck Cleaning the Discharge Tunnel and PlugCleaning Under the Belt Cover Self-Propelled Units Only Screws BBC Shield Motor Oil Disposal Waste DisposalPreparing the Fuel System StoragePreparing the Engine General Storage InformationProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Exmark Commercial Turf Equipment Page See EXMARK’S Complete Line of Accessories and Options

4500-686 Rev. B specifications

The Exmark 4500-686 Rev. B is a cutting-edge commercial mower that embodies the perfect blend of performance, durability, and user-friendly features. Designed for professional landscapers and grounds maintenance professionals, this mower is built to handle the rigorous demands of large properties and commercial applications.

One of the standout features of the Exmark 4500-686 Rev. B is its powerful engine. Equipped with a robust EFI (Electronic Fuel Injection) engine, it delivers exceptional power and fuel efficiency. The engine's advanced technology allows for quicker starts and better throttle response, ensuring that users can tackle their mowing tasks without any delays. This efficiency translates into reduced operating costs and less time spent refueling.

Another notable technology integrated into this mower is the UltraCut deck system. The 4500-686 Rev. B features a precision-engineered cutting deck that provides a superior cutting performance, offering an even and professional finish to any lawn. The design promotes optimal airflow beneath the deck, resulting in better grass lift and dispersion, which reduces clumping and enhances the quality of the cut. Additionally, the cutting height is easily adjustable, allowing operators to customize their mowing according to specific turf conditions.

User comfort is a paramount consideration in the design of the Exmark 4500-686 Rev. B. The mower is equipped with an ergonomic seat and controls that minimize operator fatigue during extended use. The full-suspension seat absorbs shocks and vibrations, while the easy-to-use controls allow for intuitive operation, ensuring that mowing is a seamless and productive experience.

Durability is another key characteristic of the 4500-686 Rev. B. Built with high-quality materials and components, this mower is designed to withstand the wear and tear of everyday use. The frame is reinforced to provide added strength, while the corrosion-resistant coating ensures that it maintains its appearance and functionality over time.

In conclusion, the Exmark 4500-686 Rev. B is an exceptional choice for anyone looking for a reliable and efficient commercial mower. With its powerful EFI engine, advanced cutting technologies, emphasis on operator comfort, and rugged build quality, this mower offers unmatched performance in the field. Whether for professional landscaping or maintaining large properties, the Exmark 4500-686 Rev. B is engineered to meet the demands of any mowing job.
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