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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 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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  #3  
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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  #4  
Old 30 Jan 2014
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Originally Posted by steveloomis View Post
Ask here and the ADV forum, someone may have what you need.
Thanks Steve.
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  #5  
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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  #6  
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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  #7  
Old 30 Jan 2014
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Quote:
Originally Posted by steveloomis View Post
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
Thanks Steve, I will try and source one in the UK first. Quite right bracket not a problem if not available off the shelf.
John
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  #8  
Old 30 Jan 2014
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Quote:
Originally Posted by Mezo View Post
There is a difference between cables so be careful, the USA didn't get all XT models.

Have a read of THIS POST on this very subject, is your bike a 1VJ or 3AJ?

Mezo.
It's a 1VJ.
Cheers
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  #9  
Old 31 Jan 2014
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Quote:
Originally Posted by Mezo View Post
Well according to Geoff then the older one will fit but check to make sure, if you have calipers or a drill bit will do, the older ones are around 7mm & the later are smaller at 4 to 5 mill.

Its very strange though as i thought the 1VJ & 3AJ engine was basically identical?

Mezo.
Mine is 7mm, so as it should be, makes a change on this bike lol.
Thanks
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  #10  
Old 31 Jan 2014
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Just as a matter of interest, has anyone else had trouble starting the XT600 on the button. Even with the plug out it only turns over around twice a second at best, have checked the starter motor, had jump leads from another battery, just in case. Just not turning over quick enough to generate a spark. Or am I missing something.:confused1:
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  #11  
Old 31 Jan 2014
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Quote:
Originally Posted by Mezo View Post
When you say you have "checked the starter" how did you do that?

Myself & Geoff simply restore the starter motors by pulling them to bits & cleaning them out (full of carbon) and then putting in new brushes.



How old is your battery by the way?

Mezo.
Stripped it down, cleaned all the crap out cleaned the com, mica undercut ok, brushes ok. Don't know how old the battery is it was on the bike when I bought it. Charges ok, I linked it to another, no difference in turning over.:confused1:
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  #12  
Old 31 Jan 2014
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Originally Posted by Mezo View Post
Did you paint it before putting it back on? when i restored my starter i put paint where i shouldn't & the starter was ever so slow turning over & i couldn't figure out what id done wrong.

I pulled it out & cleaned the paint away to get a real good ground & problem solved, paint was acting like an insulator.

You could use your car & jump leads, negative to a decent (paint free) ground & the positive to the terminal on the starter motor & see if it makes any difference (dodgy starter relay) & by using this method you are ruiling out the relay (or proving that its at fault).

Mezo.

Didn't paint it, just cleaned. I tried jump leads, but direct to the battery terminals, I will try your suggestion tomorrow. Don't mind buying a new battery if that's at fault, just seems to hold it's power and charges ok.
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  #13  
Old 1 Feb 2014
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Quote:
Originally Posted by Mezo View Post
Well its hard to test a battery properly, the guys are car parts shop use them big old testers that essentially have a heating element inside to generate a load, if it holds its voltage whilst under the load its good to go.

You could do the same i guess by hooking your voltmeter to the battery & then hit the start button & see how much it drops while your turning it over.

Im guessing your battery's like homers drink,,,, Duff.

Mezo.
I think you're right, I had been thinking along those lines when the starter motor seemed ok. Have ordered one with high CCA so we'll see.
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  #14  
Old 4 Feb 2014
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Fitted new high CCA battery today, no difference.:confused1:
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  #15  
Old 5 Feb 2014
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Quote:
Originally Posted by Mezo View Post
Have you tried jumping the starter direct yet?

Mezo.
Hi, yes I did that earlier as you suggested. Do these normally have no difficulty starting on the button, maybe the starter motor is 'tired'. It's becoming a drain on my wallet getting this bike sorted.
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