7 MAINTENANCE
69
Maintenance procedures
Replacing the blades
To replace the blades, perform the procedures below.
N WARNING
- Put on a pair of work gloves before performing the following procedures.
-
Do not touch the blade while it is spinning. You may be injured if you do so.
NOTE:
- This work requires technical skill and knowledge, as well as special tools. Consult your dealer if you cannot
perform the procedures below.
- Before replacing the blades, remove the grass clippings (M page 64) .
- Use genuine parts or their equivalent for the blade.
1
Turn the power off.
Adjust the height of the blades to position 1 and
turn the lawn mower upside down.
2
Hold the base of the blade disc with a 15/16 in
(24 mm) wrench so that the blade disc does not
rotate when you rotate the nuts.
3
Remove the nut from each blade with a 5/16 in
(8 mm) wrench.
4
Replace the blades, insert each blade through
each bolt on the blade disc, and lightly tighten a
nut with a 5/16 in (8 mm) wrench.
NOTE:
- Tighten the nuts after the shoulders of the nut
is securely in the hole of the blade.
5
Tighten the nuts to the specifi ed torque value
using a torque wrench.
3.2~4.4 lbf • ft (4.4~6.0 N • m, 0.45~0.60 kgf • m)
NOTE:
- If you do not have a torque wrench, have your
dealer perform the work.
- Use a wrench between the blade disc and the
lawn mower body.
6
Check that the blades rotate smoothly. If they do
not rotate smoothly, remove and install the nuts
again.
Hold the blade disc in place
Insert a wrench between the blade
disc holder and the lawn mower
body.
Nut
Thread
Correct
Incorrect
Shoulder
of nut
Blade
Blade disc
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