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The rebirth of Lazarus

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mickwinf:
hope its not that Steve, did lots of work on gearbox.

mickwinf:
Lazarus continues to frustrate me and resist his rebirth.started running on 3 cyls, and after swapping plugs etc with no effect I decided it must be a blockage in no 2 carb. So carbs off again and pilot jet had a blockage, then after cleaning carbs back on. Now running on two cyls! Turns out the low tension wire has broken off the coil. A member of our fine forum Simon has offered to do the Ash fix on some spare coils for me so hope to be back running soon.

mickwinf:
After Teds thread on losing enthusiasm I had a bit of a rethink and took lazarus out for a ride, the first one since i re-cleaned the carbs and fixed the coil. Running much better although still a bit of hesitation off idle. Came home and weakened the mixture a bit more and again a bit more improvement. checked the plug colour and still sooty, but getting lighter on each adjustment. The clutch still not quite there, not sure if adjustment is wrong or some other fault. Tickover is a bit odd, sometimes a slight hanging throttle and sometimes cuts out when coming to a stop. oh and no 3 cyl runs slightly hotter than the other three. But did a few miles and enjoyed the ride.

McCabe-Thiele (Ted):
Do you have the correct 500 air screws with the holes in them?

As you will know turning the screws ant-clockwise will weaken the mixture through the idle and low speed range.

If by any chance you have the 550 air screws (solid brass with a cut off nose)  its only a 1/4 turn that is about equivalent to a full turn and a half or so of the 500 screws.

mickwinf:
back with Lazarus again, as reported before the two main things were a flat spot off idle and a clutch slip problem. I put the needles in the centre groove and made a big difference, each subsequent adjustment makes a slight improvement so getting there except for a slight hanging idle. The clutch was doing my head in, as all seemed good with new plates etc, but continued to slip. It felt as if i had the clutch slightly held in, so checked the operating mech, the spiral thread thingy. It felt like it was catching and not returning as it should. the cable is a new oem item with the plastic liner, this is the second one that i have had problems with and found the liner was damaged where it joins the lever at the handlebars. I carefully cut the bad bit off and lubricated with silicone grease, also replaced the spiral holder with a spare. result is I have just been on a 20 mile ride and come back with a big grin and hope a little more fettling should get him 100%

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