Snapper 5900550 Manuel D’Utilisation

Regular Maintenance

 1.  Park the unit on a smooth, level surface such as a 

concrete floor.  Disengage the PTO, engage the parking 
brake, turn off the engine, and remove the ignition key.

 2.  Lower the mower deck to its lowest cutting position and 

remove the mower deck guard.

 3.  Using a 3/4” combination wrench, carefully rotate the 

idler arm (A, Figure 29) counter-clockwise, which will 
relieve the tension on the belt exerted from the idler 
arm.

 4.  Slide the mower drive belt over the edge of the rear 

stationary idler pulley (B).  Carefully release the tension 
on the idler arm.

Use extreme caution when rotating the idler arm with the 
combination wrench, due to the increased tension in the 
spring as the idler arm is being rotated.  Injury may result 
in the breaker bar is prematurely release while the spring 
is under tension. 

To avoid damaging belts, do NOT pry belts over pulleys.

 5.  Remove the old belt (C) and replace with a new one.  

Make sure the V-side of the belt runs in the pulley 
grooves.

 6.  Install the mower drive belt on the PTO pulley, the 

spindle pulleys (D) and all idler pulleys (E) except the 
rear stationary pulley (B).  Carefully rotate the 3/4” 
combination wrench counter-clockwise and install the 
belt on the rear stationary idler pulley.  Carefully release 
the tension on the 3/4” combination wrench.

 7.  Adjust the mower deck cutting height to 3” (7,62 cm).

 8.  Use the Mower Belt Idler Spring Length chart to 

determine the correct spring length.

48” Models

6-1/2”

(16,5 cm)

52” & 61” Models

6-3/8”

(16,2 cm)

 9.  The measurement should equal the measurement as 

designated in the chart.  If the measurement does not 
equal the measurement as designated in the chart, 
adjust the anchor eyebolt (A, Figure 30) until the desired 
measurement is acheieved.

 10. Reinstall the mower deck guards.

 11. Run the mower under no-load condition for about 5 

minutes to break-in the new belt.

Not 

for  

Reproduction