Service Bulletin

Customer Service Bulletin
Commercial Business Group
ProCore
®
660 and 880 Date: December 20, 2004
Model/Serial Range: Model Number: Serial Numbers:
09701 200000001-240009999
09702 200000001-240009999
Subject: Flywheel Shaft Wear Due to Operation When Loose
The Crankshaft Assemblies must be regularly maintained to ensure the drive
components are securely retained in position. This maintenance is required after the
first 10 hours of use, then every 50 hours thereafter. If the assembly is operated in a
loose condition, the extreme forces associated with aeration will cause damage to the
bearings and shaft of Flywheel (104-9893). The Operator’s Manual addendum included
with this bulletin is a more in-depth procedure that can be referenced to be certain the
Crankshaft Assembly is properly secured.
This bulletin is also notification of a Crankshaft Assembly design change implemented
in 2005 product. The change is an ongoing product improvement that makes this area
more secure and is intended to reduce the maintenance required to care for the
product. All future orders for the original Flywheel (104-9893) will cross-reference to
Flywheel Replacement Kit (108-6756) which contains all of the necessary parts to
convert one Crank Assembly (see picture below). A copy of the Installation Instructions
for this kit is also included with this bulletin.
Further information regarding this topic is available by contacting your Toro Commercial
Products Distributor.
Ref: Procore Taperlock.doc Copyright, 2004. The Toro Company
Flywheel
Taperlock Ass’y with
Special Set Screw
(108-6757)
-not included in kit-
Retainer
(108-2116)
Socket Head
Cap Screw
(
108-6751
)
Note:
Special Set Screw
(108-6757) for the
Taperlock Assembly
is now available as a
separate part and is
listed in the current
Parts Catalogs.