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CHAPTER 8
8454
4.3 PREHEATING SYSTEM
A. CIRCUIT DIAGRAM FOR PREHEATING SYSTEM
(1) Alternator
(2) Key s/w
(3) Preheating Controller
(4) Coolant temp. sensor
PARTS SPECIFICATION
(1) Capacity of the preheating relay : DC12V 70A
(2) Capacity of the preheating controller : DC12V
B. OPERATION FOR PREHEATING SYSTEM
If the key switch is in¡° ON¡± position, preheating system is operated automatically according to the coolant
temperature. If the coolant temperature is bellow 60¡É the glow plug is heated up for 15 seconds. Due to this,
combustion chambers are also heated up so that the engine becomes easier to start. If the coolant temperature
is above 60¡É it doesn't work.
8-14
K&T Saw Shop 606-678-9623 or 606-561-4983
www.mymowerparts.com
(5) Glow plug indicator
(6) Glow plug
(7) Glow Relay
569W813A
D569-W02 May-2003
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Troubleshooting
