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Discussion Starter #1
Last week I found a slow but steady oil leak. After a little rolling around under the bike, it looks like the breather hose isn't attached to the crank case. I can't seem to find where the hose connects to the case. Does anyone have a picture/schematic of this connection? (Bikebandit shows the hose, but not how it connects to the crank). Thanks in advance!
 

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Engine breather hose comes off top of the front of Stator case cover on the left side of motor - that hose in turn connects to left side of airbox.
There is also a small diameter hose that is the oil drain hose for the airbox - that should exit on the bottom left side of the motor along with tank vent etc - this may be the one that is dripping.
It normally has a plug in the end and is intended to be drained periodically.
 

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Discussion Starter #4
After looking around more, the drip was coming from the plugged small diameter hose. When I unplugged the tube about 4oz of oil was trapped in the air box. How does oil build up in the air box? And how often does the tube need to be drained? Thanks again.
 

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After looking around more, the drip was coming from the plugged small diameter hose. When I unplugged the tube about 4oz of oil was trapped in the air box. How does oil build up in the air box? And how often does the tube need to be drained? ..
This is a more typical problem on a pre-02 bike, when dropped on left side.
Have you had the stator cover off/replaced for any reason? There is a seal on there that should prevent oil streaming into the airbox.
See the parts fiche diagram on bike bandit for the specific part under the engine covers section (part item numbers 22 & 34) .
 

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Same problem

This helped me quite a bit, I have the same problem with my 01 rs...

there is no plug in the vent tube, so it always leaked a little from time to time that I would wipe up... recently a friend dropped it (on the left side) and broke the case cover. Now it blows out about 3/4 qt over 30 mins of hard riding...

I replaced the cap along with the seal... Can you clarify further on what those parts are, it looked like they were on the left hand side of the case... am I seeing this correctly?

Is it something I can do it by myself??

I am competent when it comes to most tasks (no engine rebuilds)...

What would I be expecting to pay to have it done at the dealer?

thanks much! this has been helpful
 

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This helped me quite a bit, I have the same problem with my 01 rs...

there is no plug in the vent tube, so it always leaked a little from time to time that I would wipe up... recently a friend dropped it (on the left side) and broke the case cover. Now it blows out about 3/4 qt over 30 mins of hard riding.......
Yours has more purely as result of the left side drop
You'd be best to pull the airbox and clean it up inside - it should stop however once it all drains - unless you did not correctly install the oils seal in the case cover when you replaced it?

See item 5 in the diagram below which is applicable for your bike

 

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looks like I am a fool, I remember having an extra part... I got some of the parts mixed up and thought the seal was an extra spacer from someplace....

ah! I tossed the new one, all I have is the old one that is tweaked a little....

Do you know if there is also a green plastic part that goes in there with the seal? ?
 

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Breather Seal

The 'green plastic thing' is a mandrel. When you purchased the new seal the mandrel should have been centred in the seal. It's purpose is to hold the shape of the seal prior to fitting over the shaft on the centrifical disc breather. The mandrel should not be disturbed when the seal is being pressed into the engine casing. It is a case of then removing the mandrel and then as quickly as possible fitting the cover onto the engine, exercising much care to prevent damaging the neoprene lip of the seal.. The seal must then be left undisturbed, that is, don't start the engine, for as long as possible. This allows the seal to 'shrink' around the shaft.
 

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boy I wish I would have gotten that last msg a bit earlier.... I just put 50 or so miles on the bike immediately after putting it in...

what is your reccomendation as to my course of action now?? order a new seal??? should I not ride it until I get the new one in???

the bike is my only mode of transport so...

thanks for the info!!! I am sold on this site!!!
 

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after reading the post again I realized I made a hopefully not too big of mistake... I left the mandrel in the center of the seal and put the thin side into the crank case... the thin side fit perfectly into the hole and held in place when I put the case cover on....

looks like it is time for a manual... should i take it out now and use the old seal, or wait for the new one??? are they one time use parts?
 

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One time use parts

In the main, yes. If the crankcase cover is removed for any reason the sperical nature of the seal will be comprimised. That is, it's tendancy to 'grip' the shaft will alter and allow oil to pass into the airbox. The Workshop Manual insists that a new seal be fitted, as previously described, each time the cover is removed. No great damage will be done if oil passes the seal, the airbox will have to be removed at some stage along with the air cleaner and cleaned of excess oil

In New Zealand the seal for my 885 motor cost $72.00, the size of a dime. But, because of it's specialist design no other seal will do the deal!

So far my 955 motor (in the Sprint) has given no problems with this set up. The Adventurer with it's 885 motor has given me nothing but grief with this weird breathing set up. Have had to modify a special filtering arrangement to catch the excess oil that bypasses the seal.
 

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I am ordering the part tomorrow, I have had no excess blow out for the last 100 miles, I am assuming it is not great to have that plastic piece in there... the only thing I can think of causing a problem is the plastic breaking down because of the high heat....

I am going to ask the dealer If they will give me the part for cost (because of ordering it previously and throwing it away, and 800$ of parts ordered)

thanks for the help
 
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