Maintenance

6.Add oil until it reaches the FULL COLD line on the expansion reservoir.

Exmark Premium Hydro Oil is recommended. Refer to the chart for an acceptable alternative:

Hydro Oil

Change Interval

 

 

Exmark Premium Hydro

500 Hours

Oil (Preferred)

 

Mobil 1 15W50

250 Hours

 

 

7.Raise the rear of machine up and support with jack stands (or equivalent support) just high enough to allow drive wheels to turn freely.

CAUTION

Raising the mower for service or maintenance relying solely on mechanical or hydraulic jacks could be dangerous. The mechanical or hydraulic jacks may not be enough support or may malfunction allowing the unit to fall, which could cause injury.

Do Not rely solely on mechanical or hydraulic jacks for support. Use adequate jack stands or equivalent support.

8.Start engine and move throttle control ahead to 1/2 throttle position. Disengage parking brake.

A.With the bypass valve open and the engine running, slowly move the directional control in both forward and reverse (5 or 6 times).

B.With the bypass valve closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times).

C.It may be necessary to repeat steps A and B until all the air is completely purged from the system. When the transaxle operates at normal noise levels and moves smoothly forward and reverse at normal speeds, then the transaxle is considered purged.

Note: Do Not change hydraulic system oil (except for what can be drained when changing filter), unless it is felt the oil has been contaminated or been extremely hot.

Changing oil unnecessarily could damage hydraulic system by introducing contaminates into the system.

Fuel Tank — Mounting Hardware Specifications

Service Interval: As required

When installing the nuts on the fuel tank studs, fully tighten the nyloc nut and back off 1/2 turn. This allows for normal fuel tank expansion and contraction with changes in temperature and fuel levels.

Thread Locking Adhesives

Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut Type” are used on the following fasteners:

•Clutch retaining bolt in the end of engine crankshaft.

•Caster wheel spacer nuts.

•Cutter housing spindle nut.

Adhesives such as “Loctite RC/609 or RC/680” or “Fel-Pro Pro-Lock Retaining I or Retaining II” are used on the following:

Fuel tank studs, where studs are inserted into tank.

Mobil HTS Grease (Or Food-Grade Anti-seize)

Mobil HTS grease (or food-grade anti-seize) is used in the following locations:

•Between the cutter housing spindle and bearings.

•Between the cutter housing spindle and sheave.

•Under top cutter housing bearing guard.

Dielectric Grease

Dielectric grease is used on all blade type electrical connections to prevent corrosion and loss of contact.

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Exmark 820 Fuel Tank Mounting Hardware Specifications, Thread Locking Adhesives, Mobil HTS Grease Or Food-Grade Anti-seize
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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.
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