Yamaha EF1000iS / EF2000iS — Air filter service
Maintenance · Air filter (foam element)
For the Yamaha EF1000iS / EF2000iS, from the Yamaha owner's manual.
Before you start
- The engine should never run without the foam element; excessive piston and cylinder wear may result.
Procedure
- Remove the screws and then remove the cover
- Remove the screw and then remove the air filter case cover
- Remove the foam element
- Wash the foam element in solvent and dry it
- Oil the foam element and squeeze out excess oil (wet but not dripping)
- Insert the foam element into the air filter case
- Install the air filter case cover in its original position and tighten the screw
- Install the cover and tighten the screws
Specs & values
- Recommended oil: Foam-air-filter oil or SAE #20 motor oil
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.