Yamaha RMAX WOLVERINE 2021 Owner's Manual page 144

The primary air filter should be cleaned and
oiled every 300–600 km (200–400 mi).
The secondary air filter should be replaced
every 2000–5000 km (1200–3000 mi).
TIP
Service the air filters more frequently when
operating in wet or dusty environments.
Whenever air filter maintenance is performed:
 check the air inlet for obstructions and the
air filter case for dirt and foreign matter.
 check the air filter case check hose for dirt
or water and clean as necessary.
 check the air filter case joint and the rubber
joint to and from the throttle body for proper
9
fit and sealing.
 tighten all fittings securely to avoid the pos-
sibility of unfiltered air entering the engine.
ECB02270
NOTICE
Never operate the engine with the air filter
element removed. Doing so would allow
unfiltered air to enter, causing rapid en-
gine wear and possible engine damage.
Additionally, the fuel injection system
would be affected, resulting in poor engine
performance and possible overheating.
To clean the primary air filter
1. Remove the hood.
2. Remove the air filter case cover by un-
hooking the air filter case cover holders.
1 1 1
2 2
1. Air filter case cover
2. Air filter case cover holder
3. Remove the foam air filter.
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2 2