Just Bought A Beta Techno. So A Couple Of Questions
Posted 09 December 2012 - 05:56 PM
First problem i noticed it leeks a bit of fuel from the carb and if i leave it stand over night it tends to flood so i have to dry the plug to get it started.
second the rear brake is rubbish.
Thirdly i cant get neutral with the engine running no mater what.
Lastly how long should it take for the fan to kick in.
Apart from that i rather like it. Better bike than the old cota 315 i used to have.
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Posted 09 December 2012 - 06:25 PM
I was able to find a spare needle from outlaw Dave and make the carb stop dribbling fuel, clean the seat with toothpaste and a Q tip
I have endless hours into the rear brake and finally after replacing the master have pressure and no fluid leaks but I don't know if it stops or not
Posted 09 December 2012 - 07:01 PM
flooding in the manner you describe (assuming the leakage is coming out of the overflow pipes) is likely to be float height or needle valve related.
- Float height is simple to fix. A search on this will get you the correct height setting See this link..http://www.ducatimec...llorto_3_2.html except i believe the correct dimension is 18.5mm.
- Needle valve issues are normally related to a poor valve seat. This can be seen visualy as marks on the tapered area. see part 9 on this diagram http://www.dellorto....arts/PHBH_l.pdf
- Worth dismantling the carb, blowing it all through with an air line to ensure there's no dirt hanging around in the inlet pipe.
- oil contaminated pads / disc-----should be able to see this if you remove the pads
- air in the brake lines (sponginess)-----Brake pedal doesnt stop solidly (lots of travel and gradual power)
- very very old brake fluid----- very dark brown colour, pump new fluid through by bleeding continuously.
- perished brake lines ----- difficult to tell... effectively they bulge instead of transmitting pressure to the pistons
- seized pistons-----take the pads out and operate the brake, see if the pistons move freely . are they easy to push back into the caliper?. If not...seized
- master cyl piston seals poor condition---- spongey pedal, takes a few pedal strokes to work
- There may be nothing wrong at all. The radiator hoses will be pretty hot before the fan wants to kick in. Also the motor will likely be pinging / detonating if overheating.
- Run the bike under load for some time (10-15 mins). Then operate at very low speed such that the radiator isnt cooling the engine. The fan should kick in after 5 mins or so.
- you can short out the thermostatic switch to see if the fanworks at all
- if the fan works but it isnt being switched on it could be the thermostatic switch.
Edited by dombush, 09 December 2012 - 08:09 PM.
Posted 09 December 2012 - 08:05 PM
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