Yamaha EF1000iS — Engine oil replacement
Maintenance
For the Yamaha EF1000iS, from the Yamaha owner's manual.
Before you start
- Do not tilt the generator when adding engine oil.
- Be sure no foreign material enters the crankcase.
Procedure
- Place generator on a level surface, warm up engine several minutes, then stop and turn fuel cock knob OFF and air vent knob clockwise.
- Loosen the screw and remove the cover.
- Remove the oil drain joint pushing downward from the bottom and remove the oil filler cap.
- Attach the oil drain joint to the oil filler hole.
- Place an oil pan under the engine. Tilt the generator to drain the oil completely.
- Replace the generator on a level surface and remove the oil drain joint.
- Add engine oil to the upper level of the filler hole using the oil filler guide.
- Wipe the oil drain joint clean and wipe up any spilled oil.
- Install the oil filler cap.
- Replace the oil drain joint in its original position.
- Install the cover and tighten the screw.
Specs & values
- Engine oil quantity: 0.32 L (0.28 Imp qt, 0.34 US qt)
- Recommended oil: YAMALUBE 4 (10W-30 Amazon eBay $54.99) or SAE 10W-30 Amazon eBay $54.99 type SE 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.