Troubleshooting

Troubleshooting

Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mower use.

When a problem occurs, do not overlook the simple causes. For example: starting problems could be caused by an empty fuel tank.

The following table lists some of the common causes of trouble. Do not attempt to service or replace major items or any items that call for special timing of adjustments procedures (such as valves, governor, etc.). Have this work done by your Engine Service Dealer.

Note: When disconnecting electrical connectors DO NOT pull on the wires to separate the connectors.

Problem		Possible Cause		Corrective Action

Starter does not crank	1.	PTO is engaged.	1.	Disengage the PTO.
	2.	Parking brake is not engaged.	2.	Set the parking brake.
	3.	Drive levers are not in neutral lock	3.	Ensure the drive levers are in the neutral
		position.		lock position.
	4.	Battery does not have a full charge.	4.	Charge the battery. See Check
				Battery Charge and Recommended
				Jump Starting Procedure sections in
				Maintenance.
	5.	Electrical connections are corroded, loose	5.	Check the electrical connections for
		or faulty.		good contact. Clean connector terminals
				thoroughly with electrical contact cleaner,
				apply dielectric grease and reconnect.
	6.	Fuse is blown.	6.	Replace the blown fuse.
	7.	Relay or switch is defective.	7.	Contact an Authorized Service Dealer.

Engine will not start, starts hard, or fails to	1.	Fuel tank is empty.	1.	Fill the fuel tank.
keep running	2.	Fuel shutoff valve is closed.	2.	Open the fuel shutoff valve.
	2.	Fuel shutoff valve is closed.	2.	Open the fuel shutoff valve.
	3.	The throttle and choke are not in the	3.	Be sure the throttle control is midway
		correct position.		between the “SLOW” and “FAST”
				positions, and the choke is in the “ON”
				position for a cold engine or the “OFF”
				position for a warm engine.
	4.	Dirt in fuel filter.	4.	Replace the fuel filter.
	5.	Dirt, water, or stale fuel is in the fuel	5.	Contact an Authorized Service Dealer.
		system.
	6.	Air cleaner is dirty.	6.	Clean or replace the air cleaner element.
	7.	Seat switch is not properly adjusted.	7.	Adjust the seat switch.
	8.	Electrical connections are corroded, loose	8.	Check the electrical connections for
		or faulty.		good contact. Clean connector terminals
				thoroughly with electrical contact cleaner,
				apply dielectric grease and reconnect.
	9.	Relay or switch is defective.	9.	Contact an Authorized Service Dealer.
	10.	Faulty spark plug.	10.	Clean, adjust or replace spark plug.
	11.	Spark plug wire is not connected.	11.	Check the spark plug wire connection.

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.	Vent hole in the fuel cap is plugged.	5.	Clean or replace the fuel cap.
	6.	Dirt in fuel filter.	6.	Replace the fuel filter.
	7.	Dirt, water, or stale fuel is in the fuel	7.	Contact an Authorized Service Dealer.
		system.

977, 820 specifications

The Exmark 820,977 is a powerful and versatile commercial-grade mower that stands out in the landscaping and turf management industry. Renowned for its durability and efficiency, this model is designed to meet the demands of professionals and serious enthusiasts alike.

One of the main features of the Exmark 820,977 is its efficient engine. Powered by a robust V-Twin engine, this mower delivers impressive horsepower, enabling it to cut through thick grass and tough terrain with ease. The engine is designed for optimal fuel efficiency, reducing operational costs while maximizing performance.

The Exmark 820,977 utilizes a patented UltraCut deck technology that ensures a clean and precise cut. This innovative mowing deck design contributes to an exceptional quality of cut at various mowing heights. The fully welded construction enhances durability, allowing for prolonged use in demanding conditions.

Another significant characteristic of the Exmark 820,977 is its ergonomic design. The control system is user-friendly, providing operators with intuitive controls that minimize fatigue during extended use. The adjustable operator seat contributes to comfort, allowing for optimal positioning regardless of the user's stature.

For enhanced maneuverability, the Exmark 820,977 features a low center of gravity and responsive handling, making it easier to navigate around obstacles and tight spaces. The mower's compact design also facilitates storage and transport without taking up too much space.

Technology plays a crucial role in the Exmark 820,977's performance. The model incorporates a range of advanced features, such as an advanced ignition system, which ensures reliable starts and smooth operation. Additionally, the mower includes a maintenance display that alerts users when service is needed, promoting proactive care and reducing downtime.

The Exmark 820,977 is also designed with adaptability in mind. Optional attachments and accessories allow users to customize their mower for a variety of tasks, from mulching and bagging to aerating and dethatching. This versatility makes it an ideal choice for commercial landscapers who require equipment that can handle different jobs effectively.

In conclusion, the Exmark 820,977 epitomizes a blend of powerful performance, advanced technology, and user-friendly features. Its durability and adaptability make it a top choice for professionals seeking a reliable mower capable of delivering superior results in challenging environments.

Exmark 820, 977 manual Troubleshooting, Problem Possible Cause Corrective Action

Models: 977 820

Problem

Possible Cause

Corrective Action

Jump Starting Procedure sections in

977, 820 specifications