Check belt tension after the first hour of operation

Maintenance

Check belt tension after the first hour of operation

Mower Deck Belt Routings:

and at least twice during the first 24 hours of

 

 

 

operation. Adjust as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 13

48 inch Deck Shown for Reference Only

1.Pulley location for Metro

2.Pulley can be moved to the front position to tighten the belt when there is no adjustment left in the turnbuckle (48 inch deck only)

3.Belt guide must be moved to the front position if the pulley is moved. (48 inch deck only)

4.Turnbuckle

5.5/16 inch (.79 cm) minimum engagement

6.5/16 inch whizlock nut

7.Rear Assist Arm Stop

8.Assist Arm

9.Front Assist Arm Stop

10.Point “A”

4.Proper belt tension will require about 10 lb (4.5 kg) side pull on belt, halfway between pulleys (see Figure 13, item 10–Point A) to deflect belt 1/2 inch (12 mm).

5.Check belt guide under the engine deck to see that it is properly set (see Belt Guide Adjustment section). Also check the blade brake adjustment (see Blade Brake Adjustment section).

Figure 14

32 inch and 36 inch Mower Deck

Figure 15

48 inch Mower Deck

Blade Brake Adjustment

1.Stop engine and wait for all moving parts to stop. Engage parking brake. Remove key or spark plug wire(s).

2.Disengage blades.

3.Make sure the blade brake pad rests against the sheave. Adjust the spring mounting bolts to properly align the pad on the sheave (see Figure 16).

4.Check the distance between the spacer and the nut at the end of the blade brake rod. The

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Exmark 4500-689 manual Blade Brake Adjustment, Maintenance, Check belt tension after the first hour of operation