reggie

My suggestion to you is to replace the master cylinder. Quite often it is a waste of time and money putting in the repair kit.

Gently pry off the knob used to turn on and off the fuel from the long range tank. You will then be able to see what you need to do. If you require a new petcock the part number is 27.81083.000

approx 1 litre per hour

I would make sure the kill button was in the kill position when turning the motor over.

Beta Alp 200 would be a good choice.

I have had several of the Beta 4t trials motorcycles and have found the stock gearing to be the best.

Apparently you need the complete rear brake system from a 1997 Gas Gas

I think you may have missed 2020

Find an AJP or Beta (grimeca) front caliper this will bolt on with very few issues. On the rear , I believe that there is a retrofit assembly available, I do not remember where I have seen it on the internet. Good luck.

Maybe try the " blue label " fork seals I know several people that have had good success with this brand.

Most likely a remote reservoir for the rear shock. It even has a ZF ( Sachs) sticker on it.

Good info !

The engine is not the same. There are minor differences.

There are no superfluous fasteners on a modern day trials motorcycle ( all brands ) Modern day trials motorcycles need all of their nuts and bolts to be tight, so that everything works properly. The ONLY way to be sure that the nuts and bolts are tight is to check them. Particular attention should be given to brake disc bolts and rear sprocket bolts.

The keyway on the Techno crank is in a different spot. the con rod kit part number you are looking for is 11.03720.800 I think this is what you are looking for

the rear shock is rebuildable

my understanding is that air cooled bikes 120 PSI is about the max cranking pressure

you should try to get in contact with members of the local trials group " ATAQ "

Ignition timing issue

I have never seen an Evo without the primary gear mounted with rubber dampers, factory or standard. I know that there are aftermarket clutch systems without the rubber dampers.

2 thoughts 1) with the fuel turned on and the bike laying flat on the ground ( either side ) does fuel pour out onto the ground ? 2) have you taken the flywheel off the check the woodruff key ?

Google " 1991 Beta Zero handbook "

maybe you are looking for GasGas p/n MT280226065 also TRS p/n 01011MT100 may fit

the caliper number for the 1998 bike is BT27722001

You should only be loosening the bleed nipple to bleed the front brake. Maybe your bleed nipple is seized in the banjo bolt.