Air Filter Element; Checking The Engine Idling Speed; Valve Clearance - Yamaha YZF R1 2021 Owner's Manual

Air filter element

The air filter element must be replaced
at the intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer replace the air
filter element.
Periodic maintenance and adjustment
EAU36765
Checking the engine idling
speed
Check the engine idling speed and, if
necessary, have it corrected by a
Yamaha dealer.
Engine idling speed:
1200–1400 r/min
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EAU44735

Valve clearance

The valves are an important engine
component, and since valve clearance
changes with use, they must be
checked and adjusted at the intervals
specified in the periodic maintenance
chart. Unadjusted valves can result in
improper air-fuel
noise, and eventually engine damage.
To prevent this from occurring, have
your Yamaha dealer check and adjust
the valve clearance at regular intervals.
TIP
This service must be performed when
the engine is cold.
EAU21403
mixture, engine
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