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Yamaha EF1000iS / EF2000iS — Muffler screen and spark arrester service

Maintenance · Muffler / spark arrester

For the Yamaha EF1000iS / EF2000iS, from the Yamaha owner's manual.

Before you start

  • The engine and muffler will be very hot after the engine has been run; avoid touching.

Procedure

  1. Remove the screws and pull the cover outward
  2. Loosen the bolt and remove the muffler cap, muffler screen, and spark arrester
  3. Remove carbon deposits on the muffler screen and spark arrester using a wire brush
  4. Check the muffler screen and spark arrester; replace if damaged
  5. Install the spark arrester
  6. Install the muffler screen and muffler cap, then tighten the bolt
  7. Install the cover and tighten the screws

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Source: Yamaha owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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