Question about 1999 Yamaha XJ 600 Diversion S-N

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I have just cleaned out the breather pipe on the airbox of my yamaha diversion xj600 1997 and when i run it now there is a loss of power at high revs.

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  • 79 Answers

Sounds like you need to reset the mixture now, Kinda strange though as the restriction usually would have cause problems unless the carbs where set with the junk in the airbox cap.

Posted on Oct 22, 2013

Testimonial: "Thanks, I will check that out. I did have some trouble clamping the four inlet houses onto the carb and wondered if this could be a factor?"

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SOURCE: intermittent misfire/loss of power at higher revs..

how are your intake and exhaust valves? are they set to specs? my racing quad use to do that. so i set the valves to spec and whala!!!!better than ever.

Posted on Mar 26, 2009

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SOURCE: Yamaha XJ600 diversion starter motor problem

sound like your starter gear might be missing a tooth or some other king of damage, this shouldnt be a costly repair, but I wouldnt ride too much as it is, if there is a chunk of the starter gear in the transmission, this could cause much damage and be very costly

Posted on Aug 13, 2009

Testimonial: "thanks for advice, unfortunately stater gears are within crankcase, which means total engine strip. Probably cheaper to get another engine!"

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SOURCE: 1985 yamaha moto 4 200 power surges

Check the carbs if all jets are well placed, needles all at same height, float levels equal, collars between carbs and cil head all tight, rubbers not punctured or broken...

Posted on Aug 22, 2009

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SOURCE: Find a parts list book for yamaha 600 diversion

I am assuming you are not familiar with Babbitt's Sports. Their web site has the entire parts list in exploded diagram format and also lists prices. No need to download. The lists are available 24/7/365. Go to www.babbittssports.com/parts/viewbybrand/parts.aspx Please rate my answer.

Posted on Jan 12, 2010

  • 105 Answers

SOURCE: fuel leaking out of airbox breather tube

hello, sounds like you need to set floats in carb, if you have already done that, buy new floats, sounds like one or more of your floats are bad, when you cleaned carbs, did you check and see if any gas was inside the floats, sometimes they will get a pinhole in them, then they will fill with a little gas, and they wont turn gas off, because they cant float in the gas, the carbs are letting gas run through intake down into motor, always turn gas off when not riding your bike that might help a little,

Posted on Feb 01, 2010

Testimonial: "I am very grateful for your advice regarding fuel leak from airbox breather. Would never have thought of pin holes in floats.thank you."

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1 Answer

Oil in airbox


Hi, Anonymous oil leaking from your air cleaner is caused by oil carryover from the engine. For whatever reason, the breather system is not separating enough oil mist and air from the piston downstroke. There are cheap and quick easy fixes and there are more expensive ones. First, make sure your breather hoses are not dry and cracked if they are ok you can start by trying the following:
1. Run your oil level half way between the add and full mark when hot.
2. Run oil breather lines from the head into a TEE fitting below carb/induction module then a single line into a mini filter under the frame.
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Hi, Anonymous oil leaking from your air cleaner is caused by oil carryover from the engine. For whatever reason, the breather system is not separating enough oil mist and air from the piston downstroke. There are cheap and quick easy fixes and there are more expensive ones. First, make sure your breather hoses are not dry and cracked if they are ok you can start by trying the following:
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1 Answer

Oil coming out of air filter


It is quite normal to have a small amount of oil in the airbox, however exsess oil in the airbox will find its way into the engine and burn hence smoke, remove the engine breather pipe from the engine to airbox and clean then replace, exsess crankcase pressure is caused by pressure leaking past the piston or rings, during detanation, dismantling of the top end of the engine is required for inspection, poss new piston and rebore.

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1 Answer

Xj600s diversion 1996, oil in the airbox? Why?


First check to see if the oil level in your crankcase is too high. If you have a vacuum petcock malfunction (hole in the diaphragm) or if the fuel petcock is left in the prime position and a float needle sticks, then you get you get gas running into the cylinders, past the rings, and into the oil.
When you start your motorcycle the oil/gas mixture has no place to go, the crankcase is too full, and the mixture exits through the crankcase breather into the air box where it will ruin a paper air filter. Always turn your fuel petcocks off when not driving. If the petcock diaphragms are bad rebuild the petcock with K&L rebuild kits or replace the fuel petcocks with new ones. If the float needles in the carburetors are bad or sticking, take the carburetors apart, clean them, and replace any worn or damaged parts You will have to change your gasoline saturated oil for it will no longer properly lubricate your motor.

Mar 08, 2011 | 1996 Yamaha XJ 600 Diversion S-N

1 Answer

My son dismantled his 1985 big wheel 200 i cant figure how to route the case breather tube


Hi the case breather pipe connects to the airbox.on the airbox you should see a connect coming off from it,this is where the crankcase breather pipes connects.find a natural route to this connector making sure the pipe does not snag/bend.Good luck

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1 Answer

I own a 1987 yamaha fz 600 air cooled motorbike, its started to blow what looks like a mixture of oil and petrol through the crankcase breather pipe going into the airbox, any ideas what this could be? i...


i have the same bike and the same problem...the floats in 2 of the carberators were bad, and since there is no fuel shut off valve the cylinders and what ever else the fuel could leak into- did. change your crankcase oil and make sure the air lines that run underneath the fuel tank are not pinched or this could also cause the gas in the tank to "flood" out your carbs when cranking it over. also check that it is jetted for the area that you live in, most are factory set for the California area...

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1 Answer

Don't know where pipes go


you should have 2 vac pipes which go to 2 mounts under the petrol tank the other 4 should go down the back of the airbox towards the swingarm.

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1 Answer

Oil shooting in to the air box


Hello,
From your brief description I'm guessing a high mileage machine? or Previous owners have revved too much from cold?
It sounds like the engine is possibly breathing? the pistons and compression rings are worn so exhaust gasses and compression leaks past them and pressurizes the crank case sending oil out the breather, so the air filter draws it in.
If the bike is performing o.k. and you can live with it try a dribble/breather can? pop the vent pipe into a seperate container to catch it. Make sure you seal the hole in the air filter so contaminents can't get in. also the new breather needs air circulation so trial and error on a recepticle.
Good Luck!
Paul 'W' U.K.

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