IGNITION SYSTEM
Page 2A-10 90-857138R1 MAY 2000
C. POWER TEST - OPTIONAL
IMPORTANT: A model 9800 Merc-o-tronic Magneto Analyzer (91-76032) with coil se-
lector switch set on “CDI” must be used for test C thru E.
1. Connect magneto analyzer test leads to ignition coil.
a
b
c
a-Black Analyzer Test Leads - Connected to Ignition Coil Ground
b-Red Analyzer Test Lead - Connected to Spade Connector of Ignition Coil
c-Large Red Analyzer Test Lead - Connected to High Tension Spark Plug Lead
(Wire Spring Inside Spark Plug Boot)
2. Turn “Hi-Lo” current control knob all the way left past “Lo” position.
3. Set analyzer to position 1 “Coil Power Test.”
4. Slowly turn current control knob clockwise while noting current value on scale 1.
5. When current value reaches 1.7 to 2.1 amperes, stop turning current control knob and
note 5 mm spark gap; it should be firing steadily.
6. If spark is faint, intermittent or no spark occurs at 2.1 amperes, replace ignition coil.
7. If ignition coil checks out OK, proceed to Test D “High Speed Test.”
D. HIGH SPEED TEST - OPTIONAL
CAUTION
This test must be completed as quickly as possible and immediately upon comple-
tion, turn the “Hi-Lo” knob fully counterclockwise and put selector switch in “off”
position.
1. Turn current control knob clockwise for maximum reading on meter scale 1. Do not ex-
ceed meter range (4 amps).
2. The 5mm spark gap should be firing constantly.
3. If spark is faint, intermittent or no spark occurs, the ignition coil is defective at high speed
and must be replaced.
4. Turn current control knob fully counterclockwise and put selector switch to “off.”
5. If ignition coil checks out OK, proceed to Test E “Surface Insulation Test.”
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