Hi everyone.

I have a 1993 MZ301e project bike. The 301 motor was in pieces when I got it and there was no carburettor. I rebuilt the motor with new bearings, seals and a rebore but was not sure what to do about the missing carb.

There seems to be good and bad stories about pattern Chinese carbs so I decided to bite the bullet and bought and fitted a new genuine Bing 84/30/110 made in Germany carb – the carb that it would have been fitted with when new.

Following the usual MZ starting method of fuel on, hold the choke lever open, kick over a few times, ignition on and it fired up first time, so far so good.

It then stopped and after trying repeatedly I found that it will only run for a few seconds after using the choke. If I hold the choke open slightly it will keep running and rev freely.

As I understand it (after searching on YouTube!) if a motor will only run on choke then there is a problem with the pilot jet, so I removed the carb, stripped it, checked all the jets and sizes, needle, needle position and float height against the manual and have blown all the bits out with a compressed air but it still will not run.

With messing about with the settings I have found that if I get the motor warm by keeping it running by holding the choke open and the air screw fully screwed IN, it will just about keep running.

I have already checked obvious things like the petrol tap works fine and fuel flows into the float bowl, the tank lid vents OK, the generator/ignition parts are all pinched from a working ETZ250, the timing is correct and the spark plug is a Brisk one as I have used in other MZs without any issues.

Can anyone suggest what the problem might be, before I give up and try a Chinese BVF or rummage about in the scrap bin for any original BVF remains?

Thanks Andrew Staley

As a relative newcomer to MZs, can anyone tell me if it is possible to put a 5 speed TS250/1 motor in an ETZ250 rolling chassis without too much stress and angst?

It looks like it should fit looking at the poition of the rear engine plate bolts and head-suspension fitting but would I have to keep the TS250 exhaust system and would the airbox rubbers be compatible and in the right place to enable it to perform OK?

Any pointers would be helpful.

Thanks

Andrew

Can anyone give me a heads up on how to buy any of the items advertised in the Regalia section of the website.

I emailed Bernard Lumb in early January for a price of the MZ Hints and Tips booklets but was told that all the regalia items had been handed over to a Chris Bastow and that he had access to the email box and would get back to me, but that was weeks ago and I have had no reply.

In the latest MZ Rider magazine it says that the Regalia Officer is now Robbie Clark but without any contact details.

I’m a bit confused and still ‘Hints and Tips’-less.

Has anyone got a copy of the 3 sections of the Hints and Tips that I can buy / borrow (and copy if that’s allowed) ?

Thanks

Andrew