Maintenance

3.If the lawn mower does not self propel with bail engaged, tighten the belt by turning the drive cable nuts clockwise. To maximize belt life, Do Not overtighten the belt.

If the lawn mower creeps forward without the bail engaged, loosen the belt by turning the drive cable nuts counterclockwise.

4.Loosen the cable clamp screw until the cable conduit slides (see Figure 34).

Figure 33

1.Adjustment of drive cable nuts

4.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

5.Check the operation for desired drive control.

6.Repeat steps 2 through 5 as necessary for further adjustment.

Note: Adjustment to obtain desired ground speed at full bail travel may be made in order to accommodate slower speeds.

Adjusting the Blade

Brake Cable

(Blade Brake Clutch Units

Only)

Adjust whenever a new blade brake cable assembly is installed or if the blade control lock lever does not operate properly.

1.Stop the engine and wait for all moving parts to stop.

2.Disconnect the wire from the spark plug.

3.Remove the belt cover by pulling upward on the back of the cover to unsnap the front and back cover tabs (see Figure 32). Remove any debris under the cover.

Figure 34

1. Spring

3. Cable clamp screw

2.Cable conduit

5.Pull the cable until there is approximately 1/8 inch in slack. Do Not put tension on the spring.

6.Tighten the screw to lock the adjustment in place.

7.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

8.Connect the wire to the spark plug.

9.Check the operation of the blade control lock lever (see Figure 13). The lever must reset itself to lock out the blade control bail. If it does not, repeat steps 4 through 8.

10.Perform the “Checking the Blade Brake Clutch (Blade Brake Clutch Units Only)” procedure in Operation.

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Image 31
Exmark 4500-686 Rev. B manual Adjustment of drive cable nuts

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.

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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.