1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 195Get this manual

Quality of the image is intentionally reduced!

IGNITION SYSTEM

Spark Plugs
Model Spark Plug Type Spark Plug Gap 377 (6.2L) AC-MR43LTS NGK BPR6EFS Champion RS12YC .045 in(1.1 mm)

Firing Order

Firing Orde

• • 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