Maintenance

Adjustments

Note: Disengage PTO, shut off engine, wait for all moving parts to stop, engage parking brake, and remove key before servicing, cleaning, or making any adjustments to the unit.

Deck Leveling

1.Position mower on a flat surface.

2.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

3.Check tire pressure in drive tires. Proper inflation pressure for tires is 13 psi (90 kPa). Adjust if necessary. Semi-pneumatic caster tires Do Not need to be inflated.

4.Set anti-scalp rollers to top holes (if installed) or remove them completely for this adjustment.

5.Lower the deck to the 1 1/2 inch (3.8 cm) height position. Place two 1 1/8 inch (2.9 cm) thick blocks under the rear edge of the cutting deck skirt; one on each side of the cutting deck.

6.Place a 1 inch (2.5 cm) block under the center front edge, but not under the anti-scalp roller brackets.

7.Loosen the four bottom chain bolts in slots until the deck is supported by the blocks. Take the slack out of the chains and retighten the hardware.

8.Recheck that blocks fit just snugly under the deck skirt and that the tension on all the chains is approximately equal. Make sure all chain attachment bolts are tight.

9.Reposition anti-scalp rollers (if installed) and tighten securely.

Note: When above adjustments have been made, the front of the deck will be slightly lower than the rear of the deck.

Pump Drive Belt Tension

Self-tensioning - No adjustment necessary.

Deck Drive Belt Tension

Self-tensioning – No adjustment necessary.

Electric Clutch Adjustment

No adjustment necessary.

Motion Control Linkage Adjustment

Note: There are two lever height options available. Place the levers in the top two holes to increase height of the levers, or in the bottom two holes to decrease the height of the levers.

1.Align the levers front/rear position. With the levers in the neutral position, loosen the hardware and adjust the levers sliding and/or tilting the lever(s) forward or backward until properly aligned and tighten hardware (Figure 14).

Figure 14

1. Motion control levers

3. 3/8-16 x 1 inch screw

2.Spring disc washer

2.If the ends of the levers hit against each other, while in the drive position (levers rotated in as far as possible), make adjustments by moving the levers outwards to the neutral lock position and carefully bending them outward. Move them back to the drive position and check for clearance. Repeat if necessary.

3.If the machine turns right or left when handles are pushed forward together, adjust the stop on the side opposite the direction of turn (see Figure 15). Move the stop back until the unit drives straight. Readjust handles if necessary.

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Exmark 977, 820 manual Deck Leveling, Pump Drive Belt Tension, Deck Drive Belt Tension, Electric Clutch Adjustment
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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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