Mower Blade Maintenance, Refer to -14 and -15 on

Table of Contents

Section 4 Maintenance and Lubrication

Land Pride

6.Slide the belt off and above the engine pulley to allow the belt to be removed from the pump/motor pulleys.

Hydraulic Drive

Pulley

Clutch Drive

Pulley

Belt

21083

Pump/Motor Belt Removal

Figure 4-13

Check the mower blades daily, they are the key to power efficiency and well groomed turf. Keep them sharp, a dull blade will tear rather than cut the grass, leaving a brown ragged top on the grass within a few hours. A dull blade also requires more power from the engine.

Replace any blade which is bent, cracked or broken.

Warped Blade (Replace)

Cutting Plane

19076

Straight Blade

Comparison of Warped and Straight Blades

Figure 4-14

7.Slide the belt over and off the integrated pump/motor pulleys.

8.Remove the belt from above the engine pulley.

9.Install new belt by sliding it up and over the engine pulley. Make certain it is not in the pulley groove at this time but is above the pulley.

10.Slide the belt over the integrated pump/motor pulleys.

11.Slide the belt onto the engine pulley.

12.Pull the spring tensioned idler pulley over and slide the belt onto it. Make certain to keep ﬁngers from getting between the belt and the pulley when the pulley is released and tension is re-established.

13.Re-install the deck drive belt on the engine electric clutch pulley and make sure it is routed properly on all of the deck pulleys.

14.Re-tension the deck belt idler per the Deck Drive Belt Adjustment instructions on page 18.

15.Re-attach the negative battery cable.

Mower Blade Maintenance

Refer to Figure 4-14 and Figure 4-15 on page 32

!WARNING!

Never attempt to straighten a bent blade by heating, or weld a cracked or broken blade as the blade may break and cause serious injury.

!DANGER!

Never work with blades while engine is running or blade engagement is engaged. Always place blade engagement switch in the down (Off) position, place control levers in park position and turn engine off. Block up mower when you must work under it. Wear gloves when handling blades. Always check for blade damage if mower strikes rock, branch or other foreign object during mowing!

Cutting Edge

Twisted Blade Edge (Replace)

Cutting Plane

Cutting Edge

19077	Straight Blade Edge

End View of Blades, Twisted & Straight Blades

Figure 4-15

Mower Blade Removal and Sharpening

Refer to Figure 4-16

Use a 15/16” wrench to remove the 5/8” cap screw holding blade to spindle saddle from underneath.

Sharpen the blades on a grinder following resharpening pattern as shown in Figure 4-16. Touch-up sharpening can be done with a file.

Check the blades for balance following grinding. A commercial balancing tool is available through most hardware supply stores, or balancing can be done by placing the blade on an inverted line punch or 5/8” bolt. Blade should not lean or tilt. Spin the blade slowly, blade should not wobble. If blade is out of balance, true it up before reinstalling.

Lay the blade on a flat surface and check for distortion. Replace any distorted blade.

Refer Figure 4-14 and Figure 4-15 on this page.

32 ZRP44 & ZRP52 Zero Turning Radius Mowers 356-117M

7/14/08