Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 62Get this manual

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SPARK PLUG CAP REMOVAL NOTE: High tension cables must have spark plug cap removed before testingCap contains 5k ohm

METER SCALE RX1K

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METER TEST LEADS

• • TGB
  • Arctic Cat
  • Bombardier
  • Can Am
  • Honda
  • John Deer
  • Kawasaki
  • Polaris
  • Suzuki
  • Yamaha
• • Kawasaki
• • Chrysler
  • Honda
  • Johnson Evinrude
  • Mercury
  • Suzuki
  • Tohatsu
  • Yamaha
• • Honda
  • Polaris
  • Sea Doo
  • Yamaha
• • Arctic Cat
  • Polaris
  • Ski Doo
  • Yamaha
• • Chrysler
  • Mercury
  • OMC
  • Volvo