McConnel SR460 - Blades & Anti-Scalp Dishes; Blade Options; Blade Inspection

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5.5 Blades & Anti-Scalp Dishes
5.5.1 Blade Options
Depending on the model of machine purchased, SR460/620/820 machines can come with two different blade
set-ups as standard. They can be further optioned with a “Starcut” blade kit which adds an additional three
blades to each rotor giving greater material mulching ability.
Standard
+
Starcut Blade Plates
+
Starcut Blades
+ Pl
ates
Standard on:
 SR460
Standard on:
 SR620

SR
820
Optional on all machines
Table 5.16 – SR460/620/820 Blade Options
5.5.2 Blade Inspection
Inspect the machine blades before each use to determine that they are properly installed, secure and in good
condition. Replace any blade sets that are bent, excessively nicked, worn or have any other damage. If any
blade is damaged it is important to replace all three blades on that rotor to retain the balance of the particular
rotor. Failure to replace such abnormally damaged blades may lead to catastrophic failure of the blade and
ejection of the broken part with tremendous force which may cause bodily injury or death.
See the below table for some visual indications of worn blades; the standard SR460/620/820 type and optional
Starcut blades.
New New
Worn Worn
Standard Blades Optional Starcut Blades
Table
5
.1
7
–
Standard
/Starcut
W
or
n/New
B
lade Comparison
DANGER! When carrying out maintenance work on or near the blades be careful of free-swinging
blades over-centering and falling. Ensure Personal Protection Equipment (PPE) is worn.
WARNING! Avoid personal injury. Never work under the machine without fixed support stands to
ensure that the deck does not fall.
When servicing or inspecting blades of any type when the machine wings are folded, it is important to ensure
that the blade carrier and blade assembly is moved into its “dropped” position to ensure nothing suddenly
falls due to the force of gravity. When the machine is folded this should automatically happen, if not; hold the