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  #21  
Old 09-06-2013, 02:29 PM
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Landrus2 Landrus2 is offline
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Location: Big apple
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Quote:
Originally Posted by YardApeMike View Post
This is a Stens Inner Air Filter (pn 100-780) off a B&S Vanguard 61000 with 180 hrs since last change. The filter media appears to be melted, causing the holes. Outer filter is intact. I have 3 engines and a Kohler ECV749 with the same problem. Any ideas what might cause this?
not just any backfire the queen mother of all backfires
Don't cut your engine right after you runing full trottle
Let it idle for a short time
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  #22  
Old 09-06-2013, 05:12 PM
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Valk Valk is offline
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Quote:
Originally Posted by BigFish View Post
Nah, Them holes ain't gonna hurt nuttin'. As most know, that filter fits inside the main pleated paper filter.
I've serviced a chitload of em' that were used commercially on a daily basis by peyote chewin' mexicanos, and none of the inner filters really needed to be replaced.
Wow, then I feel genuinely ripped off with my Kaw KAI's air filtration system...at least superficially. All I've got is a paper element with a foam pre-filter. I would think a backfire through the carb might just blow a hole through the paper. Though, I can't say I've ever experienced/heard(?) one of these. Have only 'heard' maybe a handful of actual backfires through the exhaust in 2 mowers over 6 years.

So.....is this Kaw KAI air filter system substandard?
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  #23  
Old 09-06-2013, 05:42 PM
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BigFish BigFish is offline
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Quote:
Originally Posted by Valk View Post
Wow, then I feel genuinely ripped off with my Kaw KAI's air filtration system...at least superficially. All I've got is a paper element with a foam pre-filter. I would think a backfire through the carb might just blow a hole through the paper. Though, I can't say I've ever experienced/heard(?) one of these. Have only 'heard' maybe a handful of actual backfires through the exhaust in 2 mowers over 6 years.

So.....is this Kaw KAI air filter system substandard?
No......it's fine. Just service it regularly/more often.
Obviously, the "Donaldson" canister type has a lot more surface area and usually has a better sealing surface than the other types ( plus it mounts a little higher, outta the dust), but unless the unit came equipped with one, or you order one for it when new, there's not much you can do about it now.
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