32
Section 4 Maintenance and Lubrication
ZRP44 & ZRP52 Zero Turning Radius Mowers 356-117M
7/14/08
Land Pride
Table of Contents
6.
Slide the belt off and above the engine pulley to allow
the belt to be removed from the pump/motor pulleys.
Pump/Motor Belt Removal
Figure 4-13
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!
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.
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.
Belt
21083
Hydraulic Drive
Pulley
Clutch Drive
Pulley
19076
19077
Warped Blade (Replace)
Straight Blade
Comparison of Warped and Straight Blades
Figure 4-14
Cutting Plane
End View of Blades, Twisted & Straight Blades
Figure 4-15
Cutting Plane
Cutting Edge
Cutting Edge
Twisted Blade Edge (Replace)
Straight Blade Edge
