Greasing The Blade Spindles; Checking Pto Drive Belt Tension; Extending Pto Drive Belt Life - Toro 78363 Operator's Manual

Installing the Blades
1. Hold the blade end using a rag or thickly padded glove.
2. Install the thick washer, blade, thin flat washer, and the
nut (Fig. 29).
Important
The sail (curved part of the blade) must be
pointing up toward the inside of the mower to ensure
proper cutting.
3. Tighten the nut to 80 to 100 ft.-lb. (109 to 136 N m).

Greasing the Blade Spindles

Grease the mower after every 25 operating hours or once a
year, whichever occurs first. Grease more frequently when
operating conditions are extremely dusty or sandy.
Grease Type: General-purpose grease.
How to Grease
1. Disengage the PTO, set the parking brake, lower the
attachment lift, stop the engine, and remove the ignition
key.
2. Clean the grease fittings (Fig. 32) with a rag.
Figure 32
3. Scrape any paint off the end of the fittings.
4. Connect a grease gun to each fitting (Fig. 32).
5. Pump grease into the fittings.
6. Wipe up any excess grease.
Checking PTO Drive Belt
Tension
Check the PTO drive belt tension after 5 hours of operating
with a new belt, then every 50 hours or once a year,
whichever occurs first.
1. Check the tension indicators on the front of the pulley
box. If the tension indicators do not line up, release the
belt tension and turn the adjustment knob. Push the belt
tension release arm back toward the pulley box to
tension the belt (Fig. 33).
1. Belt tension release arm
2. Belt tension indicators
3. Belt tension adjustment
knob
2. Repeat step 1 until the indicators move to the same
position.
3. Swing the tension release arm into the pulley box by
moving it into the position shown in Figure 33.

Extending PTO Drive Belt Life

The PTO drive belt will provide a long service life if
properly installed and operated. Check the following to
help extend belt life.
Maintain correct belt tension.
Maintain correct mower level.
Maintain correct blade slope in transport.
m–3519
Adjust the position of the mower belt guide.
Replace damaged pulleys.
Always operate engine-powered attachments at full
throttle.
Avoid engaging the PTO when the mower is in tall
uncut grass or weeds.
Cut tall grass and weeds with the mower in its highest
position, making a second pass cutting at desired height.
Regularly clean the mower of any buildup of grass
clippings.
Use low range or reduce ground speed when mowing in
heavy conditions or when mulching or bagging.
17
2
5
3
m–3458
1
Figure 33
4. Seating position for
tension arm
5. Belt tension released
4