Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 58Get this manual

Quality of the image is intentionally reduced!

TimingSynchronizing Adjusting Firing Order Firing Sequence Spark Plug Spark Plug Gap iming Maximum
engine to prevent engine from starting 1 Remove all spark plugs and install Dial Ind icator

• • 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