Exmark 720000 & Higher manual Adjustments, Dielectric Grease, Pump Drive Belt Tension, Maintenance

Maintenance

•Pump drive sheave set screws.

•Line shaft sheave setscrews.

•Square head setscrews on Hydro pump control arms.

•Sheave retaining bolt in the end of engine crankshaft.

•Caster wheel spacer nuts.

•Fuel tank bulkhead fitting nuts.

•Motion control tab retaining bolt.

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.

Dielectric Grease

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

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.

Pump Drive Belt Tension

Self-tensioning - No adjustment necessary.

Pump Drive Belt

Replacement

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

2.Remove pump drive belt.

3.Route new belt onto sheaves as shown in the decal located on the right hand side of the left hood support (see Figure 11).

Figure 11

Park Brake Adjustment

Check to make sure brake is adjusted properly.

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

2.Tilt seat forward and raise hood.

3.Pull the brake lever up into the engaged position.

4.Locate the park brake spring assembly (see Figure 12). There should be a gap of 1/8 inch (3 mm) between the yoke and thin nyloc nut on the brake bolt. If necessary, rotate the thin nyloc nut to obtain the 1/8 inch gap.

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