Suzuki 90-200HP outboard motors Service Manual, Page 17Get this manual
Suzuki DT115DT140 (Prior to 1986) 0.8 ohmNext, connect tester between red wire and red wire with yellow tracerResistance should be 0.2-0.6 ohmOn 1986-1988 modelsconnect tester between the two yellow wires with red tracerthen between red wire and yellow wireResistance should be 0.1-0.3 ohm at both connectionsOn 1989 models, connect tester between red wire and yellow wireNote readingthen connect tester between the two yellow wires of remaining coilResistance should be 0.1-0.3 ohm at both connectionsIGNITION COILSFour ignition coils are used on all modelsDisconnect wires leading from ignition coils and secondary leads from spark plugsTest coil primary winding resistance between coil primary terminal and engine ground, or coil black ground wirePrimary resist.ance should be 0.2-0.5 ohm on models prior to 1986,0.4-0.7 ohm on 1986-1988 models and 0.2-0.4 ohm on models after 1988Test coil secondary winding resistance between coil primary and spark plug terminalSecondary resistance shou Id be 4700-7000 ohms on 1985 and earlier models, 50008000 ohms on 1986-1988 models and 6500-9500 ohms on 1989 modelsCOUNTER COILOn models after 1985a gear counter coil is mounted along outer periphery of flywheel ring gearThe CD! module processes information from the gear counter coil in combination with the throttle valve switch or sensor to determine ignit.ion timingTo test counter coil, separate connector leading from counter coilConnect tester leads between orange wire with green tracer and black wire or engine groundCounter coil can be considered acceptable if resistance is