Toro ProCore 648 Service Manual page 125

Removal (Fig. 39)
1. Park machine on a level surface, fully raise coring
head, engage parking brake, stop engine and remove
key from the ignition switch. Secure coring head with
service latch.
2. Remove pump belt cover from machine (see Opera-
tor's Manual).
3. Remove muffler heat shield (see Exhaust System in
the Service and Repairs section of Chapter 3 – Kohler
Engine).
4. Unplug wiring harness connector from clutch.
5. Remove primary drive belt (coring head) (see Prima-
ry Drive Belt in the Service and Repairs section of Chap -
ter 7 – Coring Head).
6. Hold hardened washer with pliers to prevent engine
crankshaft from turning. Remove cap screw and hard-
ened washer that secure clutch to engine crankshaft.
7. Slide clutch from engine crankshaft.
Installation (Fig. 39)
1. Apply antisieze lubricant to engine crankshaft. Align
clutch hub with engine crankshaft keyway and slide
clutch onto crankshaft.
2. Secure clutch to crankshaft with hardened washer
and cap screw. Hold hardened washer with pliers to pre -
vent crankshaft from turning and torque cap screw from
50 to 55 ft–lb (67.8 to 74.6 N–m).
3. Install primary drive belt (coring head) (see Primary
Drive Belt in the Service and Repairs section of Chapter
7 – Coring Head).
4. Plug wiring harness connector into clutch. Make sure
to secure wire harness away from rotating machine
components.
5. Install muffler heat shield (see Exhaust System in the
Service and Repairs section of Chapter 3 – Kohler En -
gine).
6. Install pump belt cover to machine (see Operator's
Manual).
ProCore 648
1
5
1. Electric clutch
2. Cap screw
3. Harness connector
Page 5 – 33
2
Figure 40
4. Clutch strap
5. Hardened washer
Electrical System
4
3