Question about 1985 Yamaha XJ 900 F

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I have a 1983 Yamaha XJ900 that needs the carbies overhauled. Know where I can get some repair kits and the price? Thanks for your help. Peter.

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I would check with a parts unlimited dealer or dynojet for repair parts for this bike.

Posted on Mar 09, 2009

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XJ900 1983 tank removed and there are 4 hoses to connect. Where?

I could not find a parts diagram for a 93 XJ900 but I found one for a 750. All I could see was 2 hoses going to the fuel petcock. Not sure if the petcock is vacuum controlled, but the second hose might go to one of intake manifolds. This feature stops fuel from flowing when the engine is off. On California bikes it may also have a hose going to some charcoal canister(s) for capturing fuel vapor. On some tank designs their is also a hose that allows excess fuel at the filler cap to spill to the ground instead of spilling all over your tank.

Nov 01, 2013 | Yamaha XJ 900 F Motorcycles

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1994 Yamaha diversion 900 cuts out after idle revs

Hi, Anonymous and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
13. Multi carburetors not in sync
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
cylinders 1 and 4 not firing idles cuts out with throttle
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Yamaha XJ900 XJ900RK 1983 1994 Service Repair Manual Download Manuals...
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Oct 10, 2013 | 2000 Yamaha XJ 900 S Diversion

1 Answer

Carbi keeps flooding started fine and rode for 10 mins then cut and wont start unless i drain the carbi and turn petrol of then starts for around 10 seconds then cuts out its a peewee 50 2010 model

the float inside the carb is probably stuck in the open may need to remove the carb and have an overhaul kit installed in it....if you stored the unit without draining the fuel from the tank AND the carb, then the fuel probably went bad and has become "varnished". This fuel degradation can cause the float to stick and clog up the main and idle jets

Apr 27, 2011 | Yamaha YZ 125 Motorcycles

1 Answer

Hi i have purchased a yamaha xvs 650 vstar classic 2003 model fitted with BUB exhaust pipes and i am getting poping and back fireing when decellarating and have been told the carby may need rejetting,could...

If the mechanic did not replace the exhaust pipe gaskets in the head or on any connections between the head pipes and the mufflers , the air leaks could be igniting unburned fuel in the exhaust , causing the popping and back firing. Try replacing any gaskets in the exhaust system.
If you have a flat spot or hesitation when accelerating than you probably also need to rejet the carburetors. Bigger main jets should fix that condition. A jet kit may also contain differently tapered needles for the slides to help compensate for the change in the acceleration curve.

Jan 24, 2011 | 2003 Yamaha XVS 650 Dragstar Classic

1 Answer

Exhaust fittings for my xj650

as the main difference is the bore/stroke of the hight of the exhaust ports may be a bit higher so pipes may be a bit snug to the frame

Jun 04, 2010 | 1982 Yamaha XJ 650

1 Answer

Missing Fuel Lines

the 2 spigots between the 1st & 2nd carbs are for the 2 vent hoses.the 4 skinny hoses on the bottom of each carb. are for carb. bowl overflow.

Feb 17, 2009 | 1988 Yamaha XJ 900 F

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