Toro Mower ProLine

Warning: This procedure requires trained personnel with PPE!

Check if the castor fork is loose

If the castor fork is not loose, no need to replace the bushings

Raise the cutting unit and block up the front of the mower with jack stands

Remove the retaining ring and thrust washer(s) from the top of the castor wheel fork

Pull the castor wheel fork out of the mounting tube

Drive out the bushings and clean the inside of the mounting tube

Grease and drive the new bushings into the mounting tube

Inspect the castor wheel fork for wear and replace if necessary

Warning: Ensure the engine is stopped, the key is removed and the spark plug wire(s) is disconnected from the spark plug(s) before starting.

Check for signs of a worn drive belt: Squealing when the belt is rotating, blades slipping when cutting grass, frayed belt edges, burn marks and cracks.

Remove the hand knobs holding the deck cover to the top of the cutting unit and remove the deck cover.

Loosen the jam nuts on each adjusting shaft to loosen the tension on the drive belt.

Install the new drive belt onto the traction unit drive pulley and the top groove of the left spindle pulley.

Tighten the jam nuts on the adjusting shafts until the springs are compressed to a length of 5” (12.7 cm).

Reinstall the deck cover onto the cutting unit, then reinstall and tighten the hand knobs.

Sign off on the drive belt replacement

Warning: A blade that is worn or damaged could break apart and pieces could be thrown at bystanders or at you as you use the mower.

Check the cutter blades daily for sharpness, and for any wear or damage.

Upload a photo of the blade if any nicks are found

If a blade is damaged or worn, replace it immediately with a genuine TORO replacement blade.

Before Inspecting or Servicing the Blades: Park the machine on a level surface, disengage the blade control (PTO) and set the parking brake. Turn the ignition key to “OFF” to stop the engine. Remove the key and disconnect the spark plug wire(s) from the spark plug(s).

Inspect the cutting edges. If the edges are not sharp or have nicks, remove and sharpen the blades.

Inspect the blades, especially the curved area. If you notice any damage, wear, or a slot forming in this area, immediately install a new blade.

Check for Bent Blades: Rotate the blades until the ends face forward and backward. Measure from a level surface to the cutting edge of the blades. Note this dimension.

Rotate the opposite ends of the blades forward. Measure from a level surface to the cutting edge of the blades at the same position as in step 1 above. The difference between the dimensions obtained in steps 1 and 2 must not exceed 1/8” (3 mm). If this dimension exceeds 1/8” (3 mm), the blade is bent and must be replaced.

Remove the locknuts, bolts and springs holding the deflector mounts to the pivot brackets

Do the pivot brackets need to be replaced?

Remove the carriage bolts and cone locknuts holding the old brackets to the top of the discharge opening

Install the replacement pivot brackets. Make sure the carriage bolt heads are on the inside of the cutting unit

Install the deflector mounts onto the pivot brackets with the bolts, springs and locknuts. Make sure the straight ends of the springs are positioned between the deflector mounts and the grass deflector

Tighten the locknuts until they contact the pivot brackets

IMPORTANT: The grass deflector must be spring-loaded in the down position

Lift the deflector up to test that it snaps to the full down position

Sign off on the grass deflector replacement