Columbia RZT S Series, Operator'S Manual

S

ection

 7— S

ervice

28

6. 

Place the belt around the idler pulleys removed in step 3 

with the “V” side facing in. Once in place, reinstall all the 

hardware and tighten the flange lock nut to secure the 

assembly. See Figure 7-10.

7. 

Route the belt as shown in Figure 7-10 and then reinstall 

the deck.

50” & 54” Decks

1. 

Remove the deck from beneath the tractor, (refer to Deck 

Removal).

2. 

Remove the hex washer screws securing the belt covers to 

the deck. See Figure 7-11.

Belt Cover

Hex Washer

Screws

Idler Pulley

Belt Guards

Spindle Pulley

Spindle Pulley

Spindle Pulley Idler Arm

Figure 7-11

3. 

Remove the two idler pulleys by removing the hex screws 

and flange lock nuts that secure them to the deck and the 

idler arm. See Figure 7-12. Do not lose any of the hardware 

when removing the hex screw and flange lock nut.

Flange Lock Nut

Idler Pulley

Idler Pulley

Spacer

Idler Arm

Hex Screw

Hex Screw

Pulley Cap

Belt Guard

Belt Guard

Flange Lock Nut

Figure 7-12

NOTE: 

Take note of the position of the belt guards to 

ensure they are properly re-installed.

4. 

Remove the belt from the spindle pulleys.

5. 

Install the new belt around the spindle pulleys as shown  

and reinstall the belt covers. See Figure 7-11.

6. 

Place the belt around the idler pulleys removed in step 3 

with the “V” side facing in. Once in place, reinstall all the 

hardware and tighten the flange lock nut to secure the 

assembly. See Figure 7-12.

7. 

Route the belt as shown in Figure 7-12 and then reinstall 

the deck.

 Mower Blade Care

WARNING! 

Protect your hands by using heavy 

gloves when handling the blades. When servicing 

the mower deck, be careful not to cut yourself on 

the sharpened blades.

The cutting blades must be kept sharp at all times. Sharpen the 

cutting edges of the blades evenly so that the blades remain 

balanced and the same angle of sharpness is maintained. 
If the cutting edge of a blade has already been sharpened many 

times, or if any metal separation is present, it is recommended 

that new blades be installed. New blades are available at your 

authorized dealer.
The blades may be removed as follows.
1. 

Remove the deck from beneath the tractor, (refer to Deck 

Removal) then gently flip the deck over to expose its 

underside.

2. 

Use a 15⁄16” wrench to hold the flange nut on top of the 

spindle assembly and using another 15⁄16” wrench on the 

flange nut securing the blade the blade, remove the blade. 

See Figure 7-13.

Spindle Assembly

Deck

Blade

Flange Nut

Flange Nut

Figure 7-13

3. 

A block of wood may be placed between the deck housing 

and the cutting edge of the blade to help in breaking loose 

the flange nut securing the blade.