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| Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions. |
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#1
13 Aug 2012
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XT600 3aj Weak points?
Hi
I'm planning a longer tour with my XT600 3ds (Swissyfied 3aj). What is the normal weak point for this bike, and What spares do i need to take with me?   Christian 
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#2
14 Aug 2012
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How longer? and where?
Spark plug, spare fuse, oil filter, pads perhaps? puncture kit. Apart from 5th gear wear there is no real part that should fail. Mezo.
__________________
http://www.tenere.co.uk/
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#3
14 Aug 2012
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ok nice to hear, what about the fuel pump?
I plan to take 6month off, the tour depends on the visas i get. I try to go for a multi entry visa to Russia. Still planning :-)
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#4
14 Aug 2012
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You can bypass the fuel pump if it fails, you just wont be able to get the last couple of liters out of the bottom of the tank.
Just take the basics & if a main part fails then you can get it sent as needs be, i would inspect the engine before the trip though. Head & barrel off, check valves/seats, check piston/rings & while you have them off peek down in to the gearbox at the gears & see if you can spot any chipped/worn gears. Also worth checking your clutch plates as well. Mezo.
__________________
http://www.tenere.co.uk/
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#5
14 Aug 2012
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You can avoid the 5th gear problem by making sure you dont change into 5th gear below 3 1/2 thou rpm .....changing into 5th at low rpm hammers the gear teeth....
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#6
14 Aug 2012
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Quote:
__________________
2006 XT660R daily ride, 1994 XT600E about to be reborn, Blog: http://goingfastgettingnowhere.blogspot.com/
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#7
15 Aug 2012
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Quote:
 But you can just bypass it if it craps out & gravity feed the carbs. Mezo.
__________________
http://www.tenere.co.uk/
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#8
15 Aug 2012
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Quote:
__________________
2006 XT660R daily ride, 1994 XT600E about to be reborn, Blog: http://goingfastgettingnowhere.blogspot.com/
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#9
16 Aug 2012
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Thank you for all the inputs....
I have changed: cables, chain kit, clutch plates, inlet manifolds , wheel bearings, etc. I was more worried about some electric box or pick up some where.
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#10
20 Aug 2012
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Rectifier/Regultor is week
Hi Crystian,
The voltage rectifier/regulator (R/R) seems to be a week point to me. About 13 years ago on a 25 000 mile overland trip from UK to Aus my 3AJ charging system died, and a year ago on a 30 000 mile trip from Alaska to Patagonia on another 3AJ the same thing happened. I think that on our bikes the R/R is gets too hot and over time this kills it, and when it dies it can take out alternator windings with it. I guess the faulty R/R can pull too much current through the windings and burn one or more of them out. It is interesting to see that on the last XT600Es the R/R has fins added to help with cooling, but there isn’t space to fit one of these in the original location on the 3AJ. Also, its cramped location on the battery box of the 3AJ doesn’t give much cooling air flow. In fact any air it gets will have been warmed by the engine! My solution has been to fit a physically larger, and finned R/R under the tail piece behind the saddle (where they are fitted on the XT600E) and extend the wiring to reach it. If you use a late XT600E R/R I think you need to change the position of the wires in the socket that connects to it. Anything from a medium sized bike with a permanent magnet alternator should work, but some Hondas have a remote sense line that needs wiring in too (A good thing, but a little more work). My current 3AJ has one off a Super Tenere fitted. If you decide to go to this trouble it might be worth looking into MOSFET R/Rs, which are said to be more reliable and long lived than the regular (thyristor) type. My take on it is that a thyrister on will probably be fine for 20 to 30 thousand miles though. One other thing, riding with the headlight on lightens the load on the R/R as that’s 55 watts that it doesn’t have to dissipate as heat most of the time. Oh well, at least we don’t need a charged battery to produce sparks to run the engine. I retro-fitted a kick start so I don’t need the battery to start it via the starter motor either. My attempts to bump start it have always failed. If you would like more info, just ask All the best, Mark
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#11
21 Aug 2012
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Thanks Mark...
I will relocate my R/R for more cooling and bring and extra on my travel.
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