1985 Ski-Doo snowmobile Service Manual, Page 180Get this manual

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Section 02 ENGINE SUb-section 09 (537 ENGINE TYPE)
NOTE: The letters AUS (over an arrow on the piston dome) must be visible after cleaning
Clean the piston ring grooves with groove cleaner

• • TGB
  • Arctic Cat
  • Bombardier
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  • Kawasaki
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  • Suzuki
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• • Kawasaki
• • Chrysler
  • Honda
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• • Honda
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  • Sea Doo
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• • Arctic Cat
  • Polaris
  • Ski Doo
  • Yamaha
• • Chrysler
  • Mercury
  • OMC
  • Volvo