Kawasaki 25 hp V-twin

Eggshooterist · Oct 22, 2024

brenndatomu said: ↑

Yes, the inner is an insurance policy for the outer, and also catches fines that may get through the outer...where most people screw up is taking that inner out when they are servicing the outer...unless you are gonna change it, leave it in place. Also, make sure they isn't a pile of dirt built up waiting to get into the intake when you have the filters out. Guys the work in shops that service a lot of commercially used machines will tell you that they see plenty of "dusted" engines where they basically destroyed themselves sucking dirt that got into the intake by "over servicing" the inner filter and/or pulling it out to change it without cleaning the buildup out of the housing first. If you are doing everything right that inner filter will outlast 2-3 outers.
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My Kubota has the big canister filter with the optional "dusty conditions" inner filter. The inner is as clean as they I bought it. It's never gotten anything on it. I've never removed it. I've only needed to replace the outer. It can get pretty dusty here when dry so I like the added insurance.

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Kawasaki 25 hp V-twin

Eggshooterist