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Hi, would you have a drawing of the rubbers in question? thanks
Engine & Transmission / Oil leak queries
« Last post by Joffa1 on Today at 09:22:41 AM »
Iíve recently finally got my xs500c up and running and am losing a bit of oil. Having a bit of trouble determining where itís coming from. Thinking possibly where all these wires go in as looks like a bit of sealant was Used and is coming apart. Could someone explain to me what these wires actually are and if there is a common oil leak area around here?

Also noticed this white wire very close to the chain and sprocket and that concerns me? Is this correct routing of that wire?

Thanks so much for any help.
While you have the bowls off to check float height make sure the rubber plugs are in place over the pilot jet pickup drillings. If those are missing the engine will run way rich.

Engine & Transmission / Re: Lower Crankcase Cracked & Leaking Oil
« Last post by guylr on January 26, 2020, 09:45:37 PM »
You'll need a complete set of cases if the crack can't be welded as the top and bottom are line bored together.

Engine & Transmission / Lower Crankcase Cracked & Leaking Oil
« Last post by jletchford on January 26, 2020, 09:22:11 PM »
Just found out my 74 tx500 has a crack in the lower crankcase that was hidden by a previous owners JB weld. Anyone ever deal with a crack?

Curious how difficult it will be to get a replacement if the crack can't be welded.

Thanks for the help.
Engine & Transmission / Re: Replacing starter chain
« Last post by lumpy252 on January 26, 2020, 05:58:14 PM »
I had followed the Haynes manuals instructions and taken the rotor off . When I actually did the job like you say the starter chain did just lift off though I thought that perhaps the new chain would have less slack in it to allow this . The smaller sprocket does just lift off its shaft to allow for this (it will be held in place by the engine case when rebuilt).I was however also replacing the starter motor springs etc so I needed it to be removed. So yes I will concede you can just replace this chain with the rotor in place .
Float heights are 22mm , it seems that there are lots of people on here experimenting with different main jet sizes so 120 is as good a place to start as any I guess. Also it is worth checking that the two small jets in the top of the keihin carbs are clear. These are the slow and pilot jet (donít put them back in the wrong positions as they look the same). They are under the small curved grey felt cover . The float valve that is operated by the floats can stick , I found one that had been put in upside down once .
Fuel tap issue is sorted. New air filter fitted and same issue. I read that Yamaha suggested using 120 main jets in 1974. The O rings are poor on mine so trying to locate some replacements and try the 120 mains if I can get hold of some. I don't know what the float heights are meant to be either if anyone can help? much appreciated all...
Engine & Transmission / Re: Replacing starter chain
« Last post by CrouchyUK on January 26, 2020, 09:31:17 AM »
We talking about the same chain- the starter chain can be removed quite easily without touching the rotor?
Your other post on this subject says that you are only running one fuel tap so of course this is going to be the problem . Obvious things first   ::)
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