B-7 Air filter

[Irishrower]

Does anyone know where I can find an air filter for my 7?  Anyone have a good source for a generic scooter filter and housing until I can find the real thing?

[ztnoo]

Have you inquired of Richard?

[Irishrower]

Yea I'm pretty sure I asked and he didn't.

[sidi]

I once used a Craftsman lawnmower air filter. The replaceable filter was housed inside a black plastic, clamp-on round cage, that fit nicely into the frame cavity.

[Irishrower]

FYI I found a good replacement:

http://store.knfilters.com/search/product.aspx?Prod=RC-2540

The flange size is just over 1" and looks like it will be small enough to fit. Autozone had to special order it.

[Irishrower]

Ok here's the latest:

I installed the K&N and it barely runs.  Lots of smoke, no power.  I tried turning the adjusting screw on the carb but it doesn't help.  Any ideas?

[reed]

Irishrower
How does it run without the air filter!
Thanks.
Steve.

[Irishrower]

Very well.  Idles fine, good acceleration and torque, no smoke.  Ive gotten it up to about 35 on a flat road.  When I put the filter on I can barely get it to idle without giving it gas, and even then it sputters.

[reed]

Irishrower
Have you been into the carb, i would like to know the jet sizes.
And the float height setting etc.
Thanks.
Steve.

[OldSwartout]

Ok here's the latest:

I installed the K&N and it barely runs.  Lots of smoke, no power.  I tried turning the adjusting screw on the carb but it doesn't help.  Any ideas?

Some possiblities:
Float level too high.  Just a bit of extra restriction with a freshly oiled K&N may be causing it to pull too much fuel.

Way too much oil on the filter.  Rinse it out with gas, then mix some oil with gas, about 60% gas/40% oil, wet the filter with it, then let it dry for a few hours to get rid of the gas.

I've also heard of K&Ns causing a problem on some bikes - the blowback of air/fuel through the carburetor catches in the filter, then gets sucked back into carb on next stroke, but that's usually on race bikes with pretty wild intake timing.