1979 Yamaha XS 500 - Answered Questions & Fixed issues

when you post about a 79 xs 500,then that is the answer you get,line up the timing marks at tdc

1979 Yamaha XS... | Answered on May 12, 2015 | 143 views

actually you can find inside of left side cover

i will give you instructions
how to reset and many more just visit this link below



1979 Yamaha XS... | Answered on Jul 13, 2011 | 98 views

You should check your feul filter or maybe the feul tank it could be you have trash in your tank and it takes a few minutes to pick up the trash and restrict feul flow possibly not clogging the filter all the way allowing just enough feul for it to idle

1979 Yamaha XS... | Answered on Jul 02, 2011 | 1,142 views

The parts catalog can be found on line. Search with the make and model.
It was not born it was manufactured

1979 Yamaha XS... | Answered on Feb 01, 2011 | 250 views

Try new spark plug caps. They unscrew off the end of the wires. With a voltage meter they should measure 5000 OHMs , anything higher or lower and you replace them. NGK plugs are about $5 each.

1979 Yamaha XS... | Answered on Sep 25, 2010 | 198 views

good day Sir, try this link hope this will help you


1979 Yamaha XS... | Answered on Jul 26, 2010 | 334 views

there is a shortage to earth follow a wiring diagram and check all earths on that ciruit

1979 Yamaha XS... | Answered on Apr 21, 2010 | 108 views

You will have to get a digital volt meter,Harbor freight has them for $2.00, other stores like Sears, Radio Shack, any auto parts store will have them for various prices, you just need a cheap one that measures volts. Hook the positive lead up to the positive battery terminal, and the negative lead to the negative terminal, read your battery voltage should be from 11.90 volts to 12. 98 volts. Start the bike and measure the voltage while running, voltage should go up to 13.5 to 14.8 volts. If the voltage goes up the bike is charging, if it stays the same as when it isn't running the bike is not charging.

1979 Yamaha XS... | Answered on Apr 15, 2010 | 516 views


1979 Yamaha XS... | Answered on Aug 15, 2009 | 1,529 views

could be the problem. it's an automatic limiter that takes effect when engine starts to heat up. also check your throttle freeplay and that your intake grate is clean. the water s what keeps your engine cool. also the water jackets in your cylinder head could be dirty or partially clogged.

1979 Yamaha XS... | Answered on Jul 09, 2009 | 211 views

Locate the tensioner locknut on the right-hand cilinder (bottom): -keep the engine idling for about two or three minutes -loosen the locknut about two turnes while idling -the chain tensioner will slide into the proper position -tighten the locknut to secure the tensioner position and stop the engine -repeat every 3000km or 2000mls

1979 Yamaha XS... | Answered on Nov 10, 2008 | 483 views

Someone gave me a old motocycle they was taking to the land field..I done everything...but forgot one important thing..Look into the muffler..There were dirt gobblers all in the exhaust keeping it from cranking.. Before I gave up I had my wife pull me around the block....Then I heard a loud pop...The bike backfired them all out...The bike that was going to the land field was rescued.End of story...Just something to check

Yamaha XS 500... | Answered on Jan 12, 2018 | 477 views

have you got 90psi or more compression ? spark on both plugs ? carb clean ?

Yamaha XS 500... | Answered on Mar 29, 2014 | 30 views

i think you have to adjust the clutch cable play to specs of the bike or your clutch plates needs replacement.

Yamaha XS 500... | Answered on Jun 27, 2012 | 448 views

Three possible causes for your problem immediately come to mind: (1) starter; (2) engine; and (3) electrical system.

1. Starter. The oil seals in some Yamaha starters have a nasty habit of hardening and letting oil seep into the starter. That oil acts as an insulator and prevents your starter for working properly. In particular, the "brushes," which are a high-wear item to begin with, are positioned in a way that they can easily get saturated with oil, at which point they no longer conduct electricity. Thus, electricity will flow to the starter, but it's just locked up in place. Replacement starter brush assemblies are generally available through Yamaha parts suppliers; Yamaha tended to use the same starter in multiple bikes. While everything is apart, it's also a good time to replace the oil seal around the starter shaft. Yamaha does *not* sell these, but you can match the part by its size at a bearing and seal shop. It will only cost a few dollars, and it'll make a world of difference for the longevity of your starter.

2. Engine. Before trying to start your motorcycle, did you double-check to make sure that your engine was turning over? Engines that have been stored for long periods of time can have the pistons rust in their cylinders. Or, if you didn't drain the tank, the crankcase can overfill with gasoline mixed with oil, causing hydraulic lock on the bottom end (happened to me once with an XS650; a quick oil drain and fill solved that problem). Pull the spark plugs and squirt a bit of lightweight oil into each cylinder. Then, using the kick starter (this is an old 1970s XS550, not a more recent XJ550, right?), slowly turn over the engine. The pistons will push the oil up and down, coating the cylinder walls. If you don't have a working kick starter, put the bike on its center stand and put the bike into 3rd or 4th gear. Then, rotating the rear wheel should turn over the engine.

3. Electrical System. In my experience, vintage Yamaha electrical systems have proven to be more unreliable than their Honda counterparts. Sometimes, wires can lose their insulation and short out. Much more commonly, terminals and connectors tarnish or corrode and fail to let full amperage through. Connect a test meter to the positive terminal of your starter when it's installed in your bike, grounding the negative lead to the frame or the negative terminal of the battery. When you press the starter button, what voltage do you see displayed on the meter? You should see the full battery charge--about 12.6 volts for a fully-charged motorcycle battery--but you might see noticeably less due to electrical gremlins. If this is the case, start by cleaning all the visible terminals you can see--generally speaking, the starter terminal and starter relay terminals. If you don't see any voltage at all when you press the starter button, your starter relay may have gone bad.

Good luck!

Yamaha XS 500... | Answered on Jun 15, 2011 | 194 views

sounds like jets are dirty

Yamaha XS 500... | Answered on Jun 07, 2011 | 24 views

the engine needs earthing to the frame

Yamaha XS 500... | Answered on Apr 30, 2011 | 22 views


Yamaha XS 500... | Answered on Feb 21, 2011 | 27 views

I see XS 400 , 650, and 850 for 1980. I see no XS 500's
I do find XT 500 and SR 500's

Check this out. is this your bike ?
look at line item # 20

Yamaha XS 500... | Answered on Nov 23, 2010 | 346 views

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