User Manual - Page 77

For 2019 CRF450X.

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Crankcase Breather
Servicing Your Honda 71
Refer to Important Safety Precautions on page 31.
Service more frequently if your CRF is ridden in
the rain or often at full throttle.
Service the breather if you can see deposits in the
transparent section of the crankcase breather tube.
If the breather tube overflows, the air filter may
become contaminated with engine oil causing poor
engine performance.
1. Remove the crankcase breather tube plugs (1)
from the crankcase breather tubes (2) and drain
deposits into a suitable container.
2. Reinstall the crankcase breather tube plugs.
Draining
(1) crankcase breather tube plugs
(2) crankcase breather tubes
(2)
(1)
(2)
(1)
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