Toro 4500, 4700-D User Manual
Customer Bulletin
Commercial Products
Rotaries #16-07
Delayed Deck Engagement
Product: Groundsmaster 4500 & 4700-D May 7, 2008
Affected Units:
Situation:
Equipment operators may report an abnormally long delay in the engagement of the cutting
decks on 2003 and newer GM 4500 and 4700-D units. This delay can extend engagement of
the decks for 30 seconds or more, and may be intermittent. Normal deck engagement time is
approximately 1.5 to 3 seconds.
The cause for the delay may be an internal malfunction inside the Standard Control Module
(SCM). If the SCM is identified to be the source of the problem, a replacement SCM along with
a PTO Converter Harness will be required to correct the issue.
Diagnostic Information:
Remove the Operator’s Console Cover on the right side of the machine. While sitting in the
seat, turn the key to the On
observe the LED Lights on the Standard Control Module (SCM). The PTO Input
illuminate (on the SCM) but the PTO Output
to 30 seconds or more. Review the machine Operators Manual and the picture below for
additional details.
Repair Instructions:
position, but do not start engine. Turn on the PTO Switch and
Models:
30856
30868
light does not light (or the Ramp-Up Module) for up
Serial Numbers:
230000101 – 260000526
230000101 – 260000279
light will
A replacement SCM (106-9277) and a PTO Converter Harness (110-8839) are required. The
SCM is faulty and the Converter Harness will help keep the problem from reoccurring.
Special Note:
A PTO Converter Harness can be installed on a properly operating unit. Installation of this
harness will ensure the delayed engagement issue does not occur. For additional information
regarding this bulletin, contact your local authorized Toro Commercial Products Distributor.
.
Delayed or
no Output.
PTO
Input…
Page 4 of 4
Service Bulletin
Commercial Products
Rotaries #16-07
Delayed Deck Engagement
Installation Instructions for PTO Converter Harness (110-8839)
For models 30856, serials 230000101~260000526 & 30868, serials 230000101~260000279
1. Move machine to level surface. Lower cutting units to the ground, stop engine
and remove Key.
2. Remove the Operators Console Cover on the right side of unit.
3. Locate the PTO Switch. Disconnect the wire harness connector at the underside
of the switch (pic.1). Pull connector outwards to access wires.
Note: 4 wires on PTO Switch connector. They are blue, pink, orange & brown.
4. Cut the blue wire at the PTO Switch connector. Once cut, re-install the Switch
connector onto the PTO Switch (pic.2).
5. Hold loose blue wire and strip back approx. ¼” of wire insulation. Insert the
stripped blue wire end into the crimp connector of the Converter Harness. Use
suitable pliers to crimp (pic 3).
6. Unplug the male 5 wire connector from the SCM Module. Plug into the female
Converter Harness connector.
7. Plug the male connector of the Converter Harness into the SCM (pic 4).
8. Sit in seat, start unit and engage PTO to ensure proper operation. Reinstall
Console Cover.
Strip end of blue wire. Insert
blue wire to PTO Converter
Harness connector and crimp.
SCM
Module
PTO Switch
Harness
Cut blue wire at connector
Converter
Harness
installed
Page 3 of 4
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