2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 150Get this manual

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CYLINDER AND PISTON
Measure

piston skirt diameter "P" with micrometer
a 5.0 mm (0.20 in) from the piston bottom edge

Piston skirt diameter "P" Standard

• • 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