2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 350Get this manual
14-38 ELECTRICAL SYSTEM Ignition System
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Ignition Coil Installation
Consnect the spark plug lead to each ignition coil as follow #1 Spark Plug Lead Length 340 mm (13.4 in [A] #2 Spark Plug Lead Length 450 mm (17.7 in [B] #3 Spark Plug Lead Length 540 mm (21.3 in [C] #4 Spark Plug Lead Length 600 mm (23.6 in [D] Marked [E] number of each ead Apply non-permanent locking agent to the ignition coil mounting boltsInstall the #1, ignition coil [F] and #2, ignition coil [G] to the bracket [H] and tighten the bolts