Troubleshooting

 

 

 

 

 

Problem

 

Possible Cause

 

Corrective Action

 

 

 

 

 

Engine loses power

1.

Engine load is excessive.

1.

Reduce the ground speed.

 

2.

Air cleaner is dirty.

2.

Clean or replace the air cleaner element.

 

3.

Oil level in the crankcase is low.

3.

Add oil to the crankcase.

 

4.

Cooling fins and air passages for the

4.

Remove the obstructions from the cooling

 

 

engine are plugged.

 

fins and air passages.

 

5.

The spark plug(s) is pitted, fouled, or the

5.

Install a new, correctly gapped spark

 

 

gap is incorrect.

 

plug(s).

 

6.

Vent hole in the fuel cap is closed.

6.

Open the vent in the fuel cap.

 

7.

Dirt in fuel filter.

7.

Replace the fuel filter.

 

8.

Dirt, water, or stale fuel is in the fuel

8.

Contact an Authorized Service Dealer.

 

 

system.

 

 

 

9.

There is incorrect fuel in the fuel tank.

9.

Drain the tank and replace the fuel with

 

 

 

 

the proper type.

 

 

 

 

 

The machine does not drive.

1.

The drive belts are worn, loose, or broken.

1.

Contact an Authorized Service Dealer.

 

2.

The drive belts are off of the pulleys.

2.

Contact an Authorized Service Dealer.

 

3.

The drive is in bypass mode.

3.

Take machine out of bypass mode. Refer

 

 

 

 

to Pushing the Machine by Hand

 

 

 

 

section.

 

 

 

 

 

Abnormal vibration

1.

Engine mounting bolts are loose.

1.

Tighten the engine mounting bolts.

 

2.

Loose engine pulley, idler pulley, or blade

2.

Tighten the appropriate pulley.

 

 

pulley.

 

 

 

3.

Engine pulley is damaged.

3.

Contact an Authorized Service Dealer.

 

4.

Cutting blade(s) is/are bent or unbalanced.

4.

Install new cutting blade(s).

 

5.

Blade is loose.

5.

Tighten the blade mounting bolt and

 

 

 

 

inspect the blade spring disc washer for

 

 

 

 

damage (See Servicing the Cutting

 

 

 

 

Blades section).

 

6.

Blade spindle is bent.

6.

Contact an Authorized Service Dealer.

 

 

 

 

 

Uneven cutting height.

1.

Blade(s) not sharp.

1.

Sharpen the blade(s).

 

2.

Cutting blade(s) is/are bent.

2.

Install new cutting blade(s).

 

3.

A blade is loose.

3.

Tighten the blade mounting bolt and

 

 

 

 

inspect the blade spring disc washer for

 

 

 

 

damage (See Servicing the Cutting

 

 

 

 

Blades section).

 

4.

Mower deck is not level.

4.

Level mower deck from side-to-side and

 

 

 

 

front-to-rear.

 

5.

An anti-scalp wheel is not set correctly

5.

Adjust the anti-scalp wheel height.

 

6.

Underside of mower is dirty.

6.

Clean the underside of the mower.

 

7.

Tire pressure in drive tires not correct.

7.

Adjust tire pressure.

 

8.

Blade spindle bent.

8.

Contact an Authorized Service Dealer.

 

 

 

 

 

Blades do not rotate.

1.

Drive belt is worn, loose or broken.

1.

Install new drive belt.

 

2.

Drive belt is off pulley.

2.

Install drive belt and check adjusting

 

 

 

 

shafts and belt guides for correct position.

 

3.

Deck belt is worn, loose or broken.

3.

Install new deck belt.

 

4.

Deck belt is off pulley.

4.

Install deck pulley and check the idler

 

 

 

 

pulley, idler arm and spring for correct

 

 

 

 

position and function.

 

5.

The mower belt is worn, loose, or broken.

5.

Install a new mower belt.

 

 

 

 

 

49

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Image 49
Exmark 4500-450 manual To Pushing the Machine by Hand
Page 48 Page 50

4500-450 specifications

The Exmark 4500-450 is a top-tier commercial-grade zero-turn mower that has gained immense popularity among landscaping professionals for its advanced features, superior performance, and durability. Designed to tackle the toughest mowing tasks, the 4500-450 stands out for its reliability and innovative technologies.

One of the defining characteristics of the Exmark 4500-450 is its powerful engine. Equipped with a robust Kohler or Kawasaki engine, this model delivers impressive horsepower, ensuring that it can handle even the most demanding terrains with ease. This power allows for efficient cutting, enabling users to complete jobs more quickly without sacrificing quality.

The Exmark 4500-450 features a commercial-grade cutting deck that is fully adjustable to provide a clean and professional-looking cut. Its cutting width can range from 48 to 60 inches, making it versatile enough to handle various lawn sizes and types. The deck is designed with a unique airflow management system that optimizes grass lift, ensuring even and consistent results.

One of the standout technologies in the Exmark 4500-450 is its patented UltraCut deck design. This innovative feature promotes superior cutting performance while reducing clumping and providing a finer mulching capability. Additionally, the deck is designed for easy cleaning, which helps maintain the mower’s performance over time.

Comfort and usability are top priorities for the Exmark 4500-450. It boasts an ergonomic seat with high back support, reducing operator fatigue during long mowing sessions. The intuitive control system allows for smooth maneuverability, even in tight spaces, making it ideal for commercial landscaping work.

Moreover, the Exmark 4500-450 is built with durability in mind. Constructed from high-quality materials, it is designed to withstand the rigors of daily use. Its heavy-duty frame and components contribute to its long lifespan, ensuring that it remains a reliable workhorse for years to come.

In conclusion, the Exmark 4500-450 is an exceptional choice for professionals seeking a powerful, efficient, and durable zero-turn mower. With its high-performance engine, innovative cutting technologies, and user-friendly features, it sets a standard in commercial landscaping equipment, delivering results that exceed expectations while making the mowing process as efficient and comfortable as possible.
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