Kohler K9J Service Manual page 73

NOTE: The preceding step is for timing lights using
an alligator clip to connect to the spark plug. If the
light in use has a sharp prong on the spark plug
lead, simply penetrate the rubber boot with the
prong and make contact with the spark plug lead
metal connector.
3. Connect one timing light lead to the wire
wrapped around the spark plug terminal.
4. Connect one timing light lead to the hot (un-
grounded) terminal of the battery.
5. Connect the third timing light lead to engine
ground.
6. Start the engine and run it at 1200 to 1800
RPM.
7. Aim the timing light at the timing sight hole.
The light should flash just as the S or SP mark
is centered in the sight hole or is in line with
the center mark on the bearing plate or blower
housing.
8. If timing is not as specified, carefully remove the
breaker point cover and slightly loosen the gap ad-
justing screw, shift the breaker point plate until the
timing mark is properly positioned, and tighten the
screw.
9. Shut off the engine and replace the breaker
point cover.
1
f:::.l===o::it
PRIMARY CIRCUIT
f----iSECONDARY CIRCUIT
Battery Ignition System Operation
The battery ignition system operates in a manner
similar to the magneto system. The major differ-
ence is that, in the battery system, energy is pro-
vided by a battery. The battery is maintained at
full charge by an engine mounted motor-generator
or alternator.
The coil in a battery ignition system is connected
as follows. Refer to Figure 8-3.
The positive (
+)
terminal is connected to the posi-
tive terminal of the battery.
The negative (-) terminal is connected to the
breaker points.
The high tension (center) terminal is connected to
the spark plug.
Battery Ignition System Timing
The timing procedure for the battery ignition sys-
tem is the same as for the magneto system.
When using a timing light, refer to the manufactur-
er's instructions.
NOTE: The Model K341 QS Specification 71276A
engine is unique in that it is timed slightly differ-
ently than other K series engines. These engines
operate at lower speed, so the timing is set at 16
degrees before top dead center to improve run-
ning smoothness. Instead of having an S or SP at
the timing mark on the flywheel, these engines
have a 1 above and a 6 below the mark. When
timing these engines, the timing mark is centered
as with other engines.
HIGH TENSION
LEAD---~
t
t
BATTERY
t
PRIMARY -
SECONDARY
lit~~~~~~-
COIJNECTI OIJ
~
t
" I
!GNITIOII
- __., COIL
- - - - - + -
~ GROUND~
=
=
Figure 8-3. Wiring Diagram - Battery Ignition System.
8.3