Servicing The Cutting Blades - Toro 74279TE Operator's Manual

Adjusting the Front-to-Rear Mower
Pitch
1. Position the right blade front-to-rear
2. Measure the right blade at the A location, from a level
surface to the cutting edge of the blade tip
Figure 80
1. Measure here from blade
to hard surface
3. Record this measurement.
4. Measure the right blade at the B location, from a level
surface to the cutting edge of the blade tip
5. Record this measurement.
6. The mower blade should be a 6 to 10 mm (1/4 to
3/8 inch) lower at position A than at position B
80). If it is not correct, proceed to the following steps.
Note: Both of the front swivels need to be adjusted
the same amount to maintain equal chain tension.
7. Loosen the front swivel jam nuts, at the front of the
right and left swivels, approximately a 13 mm (1/2 inch)
(Figure 79).
8. Adjust the lift nuts on both the left and the right side of
the machine to achieve 6 to 10 mm (1/4 to 3/8 inch)
lower in front at A than in the rear at B
9. Tighten both swivel jam nuts against the front swivel
to lock the height.
10. Check to make sure there is equal tension on the chains
and adjust again if needed.
Adjusting the Compression Spring
1. Raise the mower lift lever to the transport position.
2. Check the distance between the 2 large washers, it
needs to be 29.2 cm (11-1/2 inches)
(Figure 80).
(Figure 80).
2. Measure at A and B
(Figure 80).
(Figure
(Figure 79).
(Figure 81).
3. Adjust this distance, by loosening the spring jam nut
and turning the nut in front of each spring
81). Turning the nut clockwise will shorten the spring;
counter-clockwise will lengthen the spring.
4. Lock the nut into position by tightening the spring jam
nut (Figure 81).
1. 29.2 cm (11–1/2 inch)
between the large washers
2. Front nut
3. Spring jam nut
4. Front swivel

Servicing the Cutting Blades

Maintain sharp blades throughout the cutting season because
sharp blades cut cleanly without tearing or shredding the grass
blades. Tearing and shredding turns grass brown at the edges,
which slows growth and increases the chance of disease.
Check the cutter blades daily for sharpness, and for any
wear or damage. File down any nicks and sharpen the
blades as necessary. If a blade is damaged or worn, replace
it immediately with a genuine Toro replacement blade. For
convenient sharpening and replacement, you may want to
keep extra blades on hand.
DANGER
A worn or damaged blade can break, and a piece
of the blade could be thrown into the operator's
or bystander's area, resulting in serious personal
injury or death.
• Inspect the blade periodically for wear or
damage.
• Replace a worn or damaged blade.
Inspect and check the blades every 8 hours.
55
(Figure
Figure 81
5. Swivel jam nut
6. Lift nut
7. Front support arm
8. Large washer