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XT600z Valve lifter XT600z Valve lifter
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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  
Old 29 Jan 2014
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XT600z Valve lifter
Hi all, have finally managed to get a spark at the plug when kicking it over with the plug out, after having the stator rewound and a replacement CDI unit. However trying to start on the button doesn't produce a spark, not turning over quick enough I presume, battery and starter motor seem ok. I would like to re-install the valve lifter as it's a pig to kick over so haven't actually had it started yet. All I have is the part in the rocker cover to accept a cable. if it is correct [see image]. When I pull it backwards by hand [anticlockwise] it appears to be lifting a spring. I just need to know how to set the cable and attachments to get it working. I have searched the manual without success. This bike is taking some time as my wife is ill and awaiting surgery so I don't have a lot of spare time to sort it. All help much appreciated as always.
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  #2  
Old 19 Feb 2014
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Back to the drawing board. Tried to start it this morning, difficult to get regular compression and a couple of backfires through the carb. Can't see a way in the manual for checking accurately the timing on this without taking the cam cover off, is there a way??, thinking now there could also be a valve issue. Starting to run around like a headless chicken, don't suppose a fault developed in the CDI unit?.
Cheers
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  #3  
Old 19 Feb 2014
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Ok, bit the bullet and took the cam cover off, the timing was out a little approx. a tooth as Steve suggested, impossible to line the horizontal lines on the camwheel when the mark on the flywheel is exactly on the cover mark, probably due to chain and sprocket wear. Can't see how it ran so well with this being out, will it be ok as near as I can get it??, don't want to strip further and fit new chain/wheels etc.
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Old 19 Feb 2014
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Are you familiar with kicktart bikes, they can be a real &/%%* to start without the right technique....
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  #5  
Old 19 Feb 2014
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Quote:
Originally Posted by Jens Eskildsen View Post
Are you familiar with kicktart bikes, they can be a real &/%%* to start without the right technique....
Oh yes, just a few.
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  #6  
Old 19 Feb 2014
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I have not had mine apart so cannot speak as to how close to the marks it needs to be.

I am sure someone will be able to answer you. Glad you found something amiss. Hopefully, it will start and run better now.

Steve
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'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
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  #7  
Old 21 Feb 2014
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Originally Posted by steveloomis View Post
I have not had mine apart so cannot speak as to how close to the marks it needs to be.

I am sure someone will be able to answer you. Glad you found something amiss. Hopefully, it will start and run better now.

Steve
Just another thing 'amiss' with this bike Steve, bit tied up to sort it for a couple of days. I'll keep you guys up to speed .
Thanks
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  #8  
Old 29 Jan 2014
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Quote:
Originally Posted by Mezo View Post
Not 100% sure on the part number for the cable, it could be 2WK-12292-00 but you need to make sure its for the 1VJ or 3AJ, from memory the earlier ones (34L/55W) are different.

Here is how its set up though.







Mezo.


That's brilliant, thank you so much. It doesn't look like it has been used for years, the cable and cam cover bracket is missing and the hole through which the cable needs to go near the kick start has been plugged up. I would never have found that. I assumed it would have been the old type handlebar lever decompressor. All I need now are the bits.
Thanks again.
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  #9  
Old 29 Jan 2014
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Ask here and the ADV forum, someone may have what you need.
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'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
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  #10  
Old 30 Jan 2014
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Quote:
Originally Posted by steveloomis View Post
Ask here and the ADV forum, someone may have what you need.
Thanks Steve.
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  #11  
Old 30 Jan 2014
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Does anyone have the correct cable and top bracket I can buy?.
Cheers
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  #12  
Old 30 Jan 2014
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Here is a part number for my '86 XT600 on Partzilla.com - OEM Powersports Parts from Honda, Kawasaki Polaris, Suzuki and Yamaha at discounts up to 80% off MSRP

33 34L-12292-00-00 CABLE, DCOMP $34.49 $22.89

The bracket is no longer available, however, you could "roll your own" It is just a piece of flat metal with a mounting hole to attach to the head and a roll around the cable. Wouldn't be too hard to make if no one has a spare. I only have two and both are in use.

Steve
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'84 XT600 is now bored to 2nd oversize and new OEM pistons and rings installed. No more smoking.
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