briggs--stratton 5900828 Manuale Utente

D

A

B

 1.  Sharpen the mower blades with grinder, hand file, or 

electric blade sharpener.

 2.  Sharpen the mower blade by removing an equal amount  

of material from each end of the mower blade.

 3.  Keep the original bevel (A, Figure 30) when grinding. 

DO NOT change the mower blade bevel.

 4.  The mower blade should have a maximum 1/64” (0,40 

mm) cutting edge (B) or less.

 5.  Balance the mower blades before installing.

 1.  Clean the mower blade to remove any dried grass or 

other debris.

 2.  See Figure 31.  Put the mower blade on a nail in a vise 

and turn the mower blade to the horizontal position. 

 3.  Check the balance of the mower blade.  If either end 

of the mower blade moves downward, sharpen the 
heavy end until the mower blade is balanced.  See 
Sharpening the Mower Blades for proper sharpening 
instructions.

 4.  Repeat the process until the mower blade remains in the 

horizontal position.  

Reinstalling the Mower Blades
 1.  Reinstall each mower blade with the air lifts pointing up 

towards the mower deck as shown in Figure 32.  Secure 
with the mower blade mounting bolt and flat washer (A 
& B, Figure 32) and torque to 70 ft. lbs (94 Nm). 

 2.  If there are no flats on the spindle shaft, wedge a 

wooden block between the mower blade and the mower 
deck housing to keep the mower blade from turning.

Regular Maintenance

Not 

for  

Reproduction