hi on my 1985 43f it has two spunge/foam air filter elements the first one fits on to the plastic cage the second one covers the first and all the cage . i have just cleaned them and oiled them with putoline foam filter oil but i over oiled them which made the bike run rich causing a flat spot/ hicup at 4-5000 rpm . i have now soaked all the excces oil out and the flat spot has gone ,i was thinking of removing one of the elemets and just having a single filter .it dos seem a little over kill to have two for road use . even with the clean not so oily filter i think the bike runs a touch rich . when i first bought the bike it was in bits and had no filter so i got some filter foam and made a single layer one and the bike allways seemed a bit stronger pulling than with the 2 stage yamaha set up . are you guys running stock set ups ? zigzag

Hi Zigzag,

i'm using standard foam filter, mine too seems to only like very minimal oil in foam.

there is a K&N filter available, code YA-6084.

anyone using one of these?

cheers
andy

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hi lamin thanks for the reply , its nice to know other xts suffer like mine. the k&n filter sounds interesting but i would rarther not go down the re jeting road if at all possibal , or are they a drop in no adjustment fitment .like lamin i would like your input. zigzag

Shouldn't need to rejet with K&N filter - the benefit of a K&N is that they are washable & consequently last a lot longer than the normal throw away ones - downside is that they are about 4x more expensive but in the long run you get your money back.

Me 2-stroke definatly need adjusting after adding a K&N comb filter. It ran way to lean, i had to turn the airscrew (airsrew, not C/O screw) in for araound 3/4 of a round.

Use it or dont