reggie

Any backfire ? Is the spark properly timed ? Maybe try putting 1/2 thimble of fuel down the spark plug hole. Good luck

This is an Amazon link for loose 3/16 inch ball bearings <<https://www.amazon.com/Sunlite-Bicycle-Loose-Ball-Bearings/dp/B000AO5KOW>>

To the best of my knowledge the thermo switch on the TRS switches the earth part of the circuit. Good luck.

showa at j banyeres

Meter the switch before looking for another issue. Sometimes any of the kill switches do not work as they should.

Good luck, I think this will fit but not 100% sure https://motomx.com/product/ktm50-complete-clutch-kit/

http://www.marzocchimoto.com/en/contacts/

The Beta 4t trial throttle is different than any of the " dirt bike " Domino throttles. I believe the only place to purchase the throttle tube is as part of an OEM Beta assembly. There are now 2 Beta 4t throttles 1) the standard one starting with the 2007 Rev 4t which is the same as the standard Evo 4t m/y 2019 and starting with the 2019 Factory model there is now a slightly different ( faster ) one

6

What tyre ?

I believe that guy53 is correct and that the woodruff/flywheel key may be compromised. Pull off the flywheel and check.

You can test to see if you have the lanyard switch wired correctly by doing the following. Disconnect the lanyard switch, hook up 2 wires to where the lanyard was hooked up. Now start the bike, once running short these 2 wires together, the bike should now stop running. If the bike does stop running there is something wrong will the lanyard switch.

Old p/n 2900450 000 was updated to 2900451 000 still used in the modern Beta. thread 16mm x 1.25 thread pitch

rcgods is correct. The item he/she referenced as the " cooling block " is the regulator / rectifier. This item is essential to having the cooling fan work.

Strip some number 18 AWG stranded wire and lay it across the open hex of the stripped bolt. Now take a wee hammer and your allen wrench and tap it in. The soft copper fills in the voids in the head of the stripped hex. This works more often than not .

I think by trial and error you are going to be the expert when it comes to adding weight to the TRS 125 flywheel! Keep us posted.

I would keep using the screen.

I would do the following. 1) Drain the gearbox oil 2) loosen the " major " clutch cover bolts 3) see if the kick start now works properly, if it does there can be two possible issues Issue A the " major " clutch cover bolts were holding the case in a spot that put sideways pressure on the kick start shaft, if this is the case you will only need to re-tighten the " major " clutch cover bolts Issue B there is a shimming problem side to side with the kick start shaft, in this case I think you should take the bike back to your dealer to have this sorted out. DO NOT FORGET TO RE-FILL THE BIKE WITH GEARBOX OIL BEFORE YOU GO RIDING

I think part number HTC48 from rexs-speedshop may be the coil you are looking for. Let us all know if this turns out to be true.

1991 there is no CDI box 1/2 of the CDI is in the stator and the other 1/2 is in the HT coil.

If this problem just started after you have worked on the bike and this bike has the Dell'orto carb perhaps you have put the floats in upside down.

This is covered in Stalling on Downhill in the Sherco forum April 5, 2013

I believe that some of the newest Sherco's with the rear mounted fuel tanks had some extra " plumbing " . I think that the fuel feed line to the carb had a " T " fitting and the third hose went back into the fuel tank. Hopefully someone else remembers better than I do. Good luck.

I believe that the 4 speed Ossa trials bikes were sold as " Plonker " in the USA They had a different name in Europe.

Jan Peters was 2nd at the last German Championship event on the Beta 300 4t