Kohler Command Pro CV980 - Manual (Page 54)

7.4
Section 7
Electrical System and Components
Molex Plug
(Some Models)
‘Ž›ŽȱŠ›Žȱ ˜ȱ’쎛Ž—ȱ¢™Žœȱ˜ȱ’—’’˜—ȱœ¢œŽ–œȱžœŽȱ˜—ȱ‘ŽœŽŽ—’—Žœǯȱ••ȱœ¢œŽ–œȱžœŽȱŠ—ȱ’—’’˜—ȱ–˜ž•Žȱ
‘’Œ‘ȱŽ—Ž›’£Žœȱ‘Žȱœ™Š›”ȱ™•žǯȱ‘Žȱ’쎛Ž—ŒŽȱ’—ȱ‘Žȱœ¢œŽ–ȱ’œȱ’—ȱ‘Žȱ Š¢ȱ‘Žȱ’—’’˜—ȱ’–’—ȱ’œȱ›’Ž›Žǯ
The ’¡Žȱ—’’˜—ȱ¢œŽ–ȱž’•’£ŽœȱŠȱŠ™ŠŒ’’ŸŽȱ’œŒ‘Š›ŽȱǻǼȱŒ˜’•ȱǻŽŽȱ’ž›ŽȱŝȬřǼǯȱ‘’œȱ’œȱŠȱ‹Šœ’Œȱ’—’’˜—ȱ
œ¢œŽ–ȱ‘ŠȱžœŽœȱŠȱę¡Žȱ’—’’˜—ȱ–˜ž•Žȱ ‘Ž›Žȱ‘Žȱ’—’’˜—ȱ’–’—ȱŠ—ȱœ™Š›”ȱ›Ž–Š’—œȱŒ˜—œŠ—ȱ›ŽŠ›•Žœœȱ˜ȱ‘Žȱ
engine speed.
The ’’Š•ȱ™Š›”ȱŸŠ—ŒŽȱ—’’˜—ȱǻǼȱ¢œŽ–ȱǻŽŽȱ’ž›ŽȱŝȬŜǼǯȱ‘’œȱœ¢œŽ–ȱžœŽœȱŠȱ’’Š•ȱ–’Œ›˜™›˜ŒŽœœ˜›ȱ
which is located in the ignition modules. The ignition timing varies depending upon the engine speed with this
system.
Operation:ȱœȱ‘ŽȱĚ¢ ‘ŽŽ•ȱ›˜ŠŽœǰȱ‘Žȱ–Š—Žȱ
›˜ž™’—ȱ™ŠœœŽœȱ‘Žȱ’—™žȱŒ˜’•ȱǻŗǼǯȱ‘ŽȱŒ˜››Žœ™˜—’—ȱ
–Š—Ž’Œȱꎕȱ’—žŒŽœȱŽ—Ž›¢ȱ’—˜ȱ‘Žȱ’—™žȱŒ˜’•ȱǻŗǼǯȱ
‘Žȱ›Žœž•Š—ȱ™ž•œŽȱ’œȱ›ŽŒ’ꮍȱ‹¢ȱŗȱŠ—ȱŒ‘Š›Žœȱ
ŒŠ™ŠŒ’˜›ȱŗǯȱœȱ‘Žȱ–Š—ŽȱŠœœŽ–‹•¢ȱŒ˜–™•ŽŽœȱ’œȱ
™Šœœǰȱ’ȱŠŒ’ŸŠŽœȱ‘Žȱ›’Ž›’—ȱŽŸ’ŒŽȱǻŘǼǰȱ ‘’Œ‘ȱ
ŒŠžœŽœȱ‘ŽȱœŽ–’Œ˜—žŒ˜›ȱœ ’Œ‘ȱǻǼȱ˜ȱž›—ȱ˜—ǯȱ
’‘ȱ‘ŽȱŽŸ’ŒŽȱœ ’Œ‘ȱȃǰȄȱ‘ŽȱŒ‘Š›’—ȱŒŠ™ŠŒ’˜›ȱ
ǻŗǼȱ’œȱ’›ŽŒ•¢ȱŒ˜——ŽŒŽȱŠŒ›˜œœȱ‘Žȱ™›’–Š›¢ȱǻǼȱ˜ȱ‘Žȱ
˜ž™žȱ›Š—œ˜›–Ž›ȱǻŗǼǯȱœȱ‘ŽȱŒŠ™ŠŒ’˜›ȱ’œŒ‘Š›Žœǰȱ
‘ŽȱŒž››Ž—ȱ’—’’ŠŽœȱŠȱŠœȱ›’œ’—ȱ̞¡ȱꎕȱ’—ȱ‘Žȱ
›Š—œ˜›–Ž›ȱŒ˜›Žǯȱȱ‘’‘ȱŸ˜•ŠŽȱ™ž•œŽȱ’œȱŽ—Ž›ŠŽȱ
from this action into the secondary winding of the
transformer. This pulse is delivered to the spark plug
gap. Ionization of the gap occurs, resulting in an arc
Šȱ‘Žȱ™•žȱŽ•ŽŒ›˜Žœǯȱ‘’œȱœ™Š›”ȱ’—’Žœȱ‘ŽȱžŽ•ȬŠ’›ȱ
–’¡ž›Žȱ’—ȱ‘ŽȱŒ˜–‹žœ’˜—ȱŒ‘Š–‹Ž›ǯ
Electronic Ignition Systems
Figure 7-3. Electronic CD Fixed Ignition Timing System.
Operation of CD Ignition Systems
Fixed Timing System
‘’œȱœ¢œŽ–ȱǻ’ž›ŽȱŝȬřǼȱŒ˜—œ’œœȱ˜ȱ‘Žȱ˜••˜ ’—ȱ
components:
ȱ Ȋȱ ȱ–Š—ŽȱŠœœŽ–‹•¢ȱ ‘’Œ‘ȱ’œȱ™Ž›–Š—Ž—•¢ȱŠĜ¡Žȱ
˜ȱ‘ŽȱĚ¢ ‘ŽŽ•ǯ
ȱ Ȋȱ ˜ȱŽ•ŽŒ›˜—’ŒȱŒŠ™ŠŒ’’ŸŽȬ’œŒ‘Š›Žȱ’—’’˜—ȱ
modules which mount on the engine crankcase
ǻ’ž›ŽȱŝȬŚǼǯ
ȱ Ȋȱ ȱ”’••ȱœ ’Œ‘ȱǻ˜›ȱ”Ž¢ȱœ ’Œ‘Ǽȱ ‘’Œ‘ȱ›˜ž—œȱ‘Žȱ
modules to stop the engine.
• Two spark plugs.