Air Filter Maintenance - Yamaha WOLVERINE RMAX4 Owner's Manual

cause the rubber seal on the end of the cap
fits tightly. To remove the spark plug cap,
simply twist it back and forth while pulling
it out; to install it, twist it back and forth
while pushing it in.
EBU37531

Air filter maintenance

This model is equipped with two air filter ele-
ments, a primary foam-type air filter and a
secondary paper-type air filter. The air filters
are located under the hood.
9
1. Primary air filter
2. Secondary air filter
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
1 1 1
fit and sealing.
 tighten all fittings securely to avoid the pos-
sibility of unfiltered air entering the engine.
1 2
ECB02270
NOTICE
Never operate the engine with the air filter
element removed. Doing so would allow
unfiltered air to enter, causing rapid en-
9-32