KZR's Bikes of the Month for 2024

KZ440 Resto

  • The Gringo
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  • ¡Usted no necesita otra motocicleta!
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15 May 2008 18:24 #213891 by The Gringo
Replied by The Gringo on topic KZ440 Resto
That looks to be the screw that is used to adjust the sync on your carbs.

Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special

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15 May 2008 19:56 - 07 Feb 2013 03:22 #213905 by KZ250LTD
Replied by KZ250LTD on topic .
.

79 KZ1000ST
Past:
Many.
Last edit: 07 Feb 2013 03:22 by KZ250LTD.

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15 May 2008 20:39 #213916 by A3440
Replied by A3440 on topic KZ440 Resto
KZ250LTD wrote:

Yupp, def the synch screw. You might want to just pull the carbs and synch the butterfly valves just to know it's done. Might help with the odd running, the nut on that synchronization screw should be locked into position, if not then the synch is more than likely off. If you have a Factory Service Manual it's a breeze to fix, might take half an hour once you know what you're doing.


Yeah I read the PDF manual I have and it recommends vacuum gauges...I am currently without such a device so I am going to sync them with feeler gauges and while they are off the bike I am going to lube the linkages some more and seal some cracks that MAY be leaking...I am giving myself two days for that first test ride.

1982 KZ440 LTD - Now Running

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17 May 2008 18:17 - 17 May 2008 18:18 #214234 by A3440
Replied by A3440 on topic KZ440 Resto
Well after some good research I decided to make a manometer and decided to go ahead and check the sync of the carbs today. Not good. I couldn't get the bike to stay running more than about 15 seconds but in that time I saw that the left carb is pulling WAY more vacuum than the right carb is. From the level line I put on the ruler the left side is pulling about 6 inches up the tube. This is most likely the source of my idle and engine running problems...spitting and sputtering with some backfiring.

I don't know which side the sync screw adjust, I am assuming the left carb as when I push on the sync screw rather the piece just below it the bikes idle normalizes some what. As soon as I decided to adjust the sync screw the bike cut off, my starter is bad and keeps draining my battery so it is on the charger now. This has to be the problem with the bike...I am almost certain of it now. Can any of you relate to my symptoms and maybe give me some direction or am I on the right track? Also I went to do the point gaps only to find I have no points under the cover...rather some black box with a small piece of metal barely sticking out the bottom of it and there is a small cam on the crank that comes like .3mm from hitting it, at least the feeler gauge was .3mm and was making contact between the cam and the boxes little metal strip.

When the cam lobe is pointing at the little metal strip on the bottom of the black box the timing mark is at "F". This black box has wires that look to go up to the coil. So any suggestions would be great...thanks all, Mike

1982 KZ440 LTD - Now Running
Last edit: 17 May 2008 18:18 by A3440.

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20 May 2008 19:12 #214841 by A3440
Replied by A3440 on topic KZ440 Resto
Well, pretty much tore apart my starter, cleaned it, then charged my battery for 4 hours. Got up today and decided to sync my carbs yet again...this time the bike stayed running...long story short...make sure your airbox is seated correctly and sync those carbs...take a look:

[img

1982 KZ440 LTD - Now Running

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21 May 2008 13:54 #214959 by EasyRider1
Replied by EasyRider1 on topic KZ440 Resto
Way to go! Glad you finally got her running. My kz440 gave me similar problems when I first got it.

1978 KZ650C

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05 Jun 2008 23:04 #218275 by A3440
Replied by A3440 on topic KZ440 Resto
Well I have another update since my last post...my starter took a dump so a friend of mine ordered a starter rebuild kit from Ebay. It was here for me today when I woke up. So off I went on what I was sure would be a 3 hour tour...a 3 hour tour. Total time was about 40 minutes what with removing covers and the starter. The starter itself took about 15 minutes to rebuild including the testing of the armature and cleaning it. I had a little trouble at first getting the brushes to stay in their housings with all the spring pressure but I got by that with 4 single edge razor blades to hold the springs away from the brushes as I put the starter together. Once the armature was in place and all the brushes were good I removed the razor blades to let the springs apply pressure as they should.

I was skeptical and unsure the bike would start...I need to learn to have faith in myself as the bike fired right up and did it very fast. All I replaced were the brushes, the plate they are on and the O rings for the housing and where it goes through the case and a few washers for the power connection. So now it is all back together and starts every time and I was finally able to put the starter cover back on the bike. My friend also ordered me a set of fork seals and they should be here directly. Once these are replaced and the forks are put back together the bike is road ready as I have already put the new rear shocks on. All that is left after that is cosmetic and a few issues I have with my turn signals.

1982 KZ440 LTD - Now Running

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  • The Gringo
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  • ¡Usted no necesita otra motocicleta!
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05 Jun 2008 23:24 #218278 by The Gringo
Replied by The Gringo on topic KZ440 Resto
Always good to hear of another one being brought back from the dead. You'll be busting bugs before you know it.

Andy
Akron, Ohio
80 Z-1 Classic-Sold
84 GPZ1100
79 KZ 1000 LTD
78 KZ 1000 A2
77 KZ 1000 LTD-Sold
76 KZ 900 The definition of a barn find
76 KZ 900-Sold gone to Denmark
KZ 750 times 3, KZ 650 times 8 Sold 1 down to 7
KZ 550 times 2 80 440LTD-Sold
81 CSR 305-Sold 81 Yamaha XS650 Special

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12 Jun 2008 20:20 #219703 by A3440
Replied by A3440 on topic KZ440 Resto
I did my fork seals and put in new oil and now my ride is not all squishy and scary. I also got a new Helmet as today is my Birthday. It's a Shoei X-SPII Troy Lee Designs and it is cool.


1982 KZ440 LTD - Now Running

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29 Jun 2008 02:12 #222753 by A3440
Replied by A3440 on topic KZ440 Resto
Latest update, the 440 is doing very well and is now ready for it's tags and registration. Also I have a cool jacket to go with my helmet.


1982 KZ440 LTD - Now Running

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