Yamaha EF1000A — Fuel cock cleaning
Maintenance
For the Yamaha EF1000A, from the Yamaha owner's manual.
Before you start
- Never use or be near fuel and solvent while smoking or in the vicinity of an open flame.
- Be sure the fuel cock cup is tightened securely.
Procedure
- Stop the engine.
- Turn the fuel cock lever to "OFF".
- Remove the fuel cock cup and gasket.
- Clean the cup with solvent and wipe it off.
- Check the gasket; replace if damaged.
- Reinstall the gasket and fuel cock cup.
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.