GPZ 500 Air Filter Cleaning

[nigel_robbins]

Hi,
I plan on cleaning the original foam air filter on my GPZ 500 which has done 15k miles.
Does anyone know the best way of doing it...
How should I clean it (e.g. what solvent should I use) ?
What oil should I use and how should I apply it ?
Thanks !

[MarJay]

[whitedevil]

oe ones can be cleaned just fine as long as they're not damaged and replaced evey 4 times iirc.
I cleaned mine with parrafin, dried it out with a hair dryer and then applied a very thin layer of clean engine oil remove excess oil with shop towel.
Or you could do the FOG mod which involves putting a k&n air filter in and cutting a 1inch hole in the back of the left hand side airbox, then turning the pilot screws out 2.5 turns. (then adjust to fine tune to your bike)
It makes the bike run much much better imo and gets rid of the flat spots through the rev range.
More info can be found at www.ex500.com
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GPZ500 sold ~ CBR600FS-2 sold ~ ZX6R sold ~ Street Triple R

[Kickstart]

Hi

Kawasaki list it as to be washed with a bath of high flash point solvent and then dry it by blowing through with compressed air (in the opposite direction to the way air would normally go through it).

Should then be oiled by soaking a lint free towel with SAE 30 oil and then tapping the outside of the filter with the towel.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[stinkwheel]

Hot soapy water also works, then setting it aside to dry.

Don't try to reuse it too often though! Although I suspect this one was more a case of the previous owner never having looked at it since the bike was new (24k miles). Moral of the story, If you buy a bike that's "just been serviced", don't believe a word of it.
https://i48.photobucket.com/albums/f216/stinkwheel/airfilter-1.jpg
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Ingah]

That looks in a similar condition to that my sub-air filter was in.

+1 to the "don't trust previous owner(s) to have done the servicing properly" idea!
____________________
-- Ingah

[nigel_robbins]

Hi,
Here's an update...
I applied washing up liquid to the foam and washed in warm water.
After rising out with clean cold water I dried as much as I could with kitchen paper.
The filter was left overnight in the airing cupboard to dry. I guess if you don't have time you could also use a hair dryer.
Before refitting I added 30w oil to the foam working it in with my hands.
Thanks for all the replies !