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Joachim Venghaus:
The most important item of the set is the engineering opinion, a small booklet made from dark red paper and black print, therefore hard to copy, which will be collected by the MOT engineer after appraising the installation. In addition, the VIN is printed on every side of the report. Furthermore there are four aluminium discs with 42 mm of diameter and a centric hole of 13.5 mm as well as four hose clamps.
The ideal way for a lot of money:
go to a BMW dealer, get everything installed, receive a confirmation of the installation and go to the MOT.
The hard slog for little more than EUR 120 (done) by me:
This way stands and falls with the trusting contact to a MOT man. The plan is described to him beforehand. The fact that an engineering opinion will be available makes the thing credible. In principle, however: If he does not want to help and insists on an installation confirmation, nothing goes at all.
If he is willing, the following must be done:
Remove the left fairing parts. Lift the four sleeves (rubber tubes) between collector (big black box) and throttle body (injection aggregate). In order to do this the four lower clamps (hose clamps) must be by cut (show of strength with cutting pliers). The collector then must be raised, which will be hardly better without the tank mounted. The sleeve at the very front usually tears. It has become brittle due to hot air from the cooler. Into the four lifted sleeves one shoves the choking plates and pushes them up as far as possible. I did not care about the tear in the first sleeve.
The sleeves are put on again, this is easy with old sleeves, since they are stiff and do not bend so easily. Four new hose clamps, will be attached. This is a tedious fiddling, because they either fall down all the time or if tightened to far the sleeves become deformed so that one cannot install them properly. Chances are high you flick one of the screws onto the engine. No harm done. I found it two years later after unchoking the bike again.
The tear in the sleeve at the very front did not have any adverse effects. At unchoing the bike it should be exchanged, since removing the chiking discs will eventually tear the whole sleeve. It is more difficult to install new sleeves compared to old ones, since they are much softer and tighter and will only unwillingly glide over the connecting piec
With a fresh drivers licence one may already drive to the MOT with the newly choked work of art. With the red booklet the MOT man then writes up a certificate for the approval agency. With the registration documents and the certificate you may go to the registration office and new registration documents with the wanted (or unwanted) 25 kW will issued there.
After two years the whole thing then starts over again. Even the most suspicious MOT man immediately believes the removal of the choke plates.
You sometimes hear stories that the choke is removed immediately after MOT. I would like to warn you! Unchoking a 125 ccm with the age of 16 is a criminal offence, but the punishment will be not very harsh, if no other offences have been conducted before. With rising age this will change. A small choice:
Driving without a drivers permit, concomitantly with driving without compulsory insurance and driving without operating license. The missing choke will only show up in case of an accident or other policely relevant facts. I do not know the rates but you're rid of the drivers licence, additionally a four-digit sum as well.
Best wishes
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