Yamaha

Hi all, I realise that this is not strictly trials related, but if I get it resolved then we may have another member of the trials riding fraternity!! I have acquired a PW50 which is old but essentially in pretty good nick. It was left standing for some time and no longer runs. I have flushed the tank, cleaned out the carb - which had filled with 'varnish' like old petrol deposits. Jets were partially obscured but have cleaned and blown through and all appear ok now. Electrics - there appears to be a spark but not a big fat one. Does anyone have any info on testing the electrics / coils on these things? Having 'googled' the issue I have tried disconecting the handle…

at a trial on sunday i found that when i first opened the throttle the engine hesitated at first then as the revs rose it cleared and revved perfectly. the carb has been cleaned jets blown out etc and a new plug fitted. any help would be greatly appreciated mickh

any ideas of how much oil goes in each fork leg after a total strip down and oil type

What wt oil should I use 5,10 ,15 20 ?I have used 10 but forks seem to rebound fast

I have a 74 TY 250 that doesn't have a headlight/engine kill switch on it. Therefore, I do not have a working headlight or tail light. Does anybody here know where I can locate a combo switch or if one from a different model of yamaha will work on it? Thanks, Doug

Hello does anyone out there know the part numbers for the kickstart (crank) and the boss (swivel joint) many thanks Nick.

had the ty 80 out in a field learning gears etc and there is a large amount of oil running from the silencer and in the air ending up as black spots all over the wee lads back. obviously the first thing I think of is mixture of fuel. Currently running at 40:1 motorex 2t fully synthetic what is the proper ratio ? best way to get exhaust cleaned out ? any other ideas

when mick and shirty used the yam frame and altered them,who did the work for them ie the welding ect to the frame?

Hi Everyone, Doe's anyone have the number of the guy that used to cast the majesty igniton covers it was posted on here ages ago but not sure when? cheers!

I was wondering if anyone know if the head angle on the 175 cc frame has the same angle as a stock frame, and is the wheel base the same.

Would anyone know if a 77-80 YZ250 clutch cover would fit an 85-92 TY250 "once the oil pump has been removed" ? Regards Rory

Does anyone know of any other rear wheel spindle that will fit a godden swing arm, as the Yamaha TY250 spindle is smaller that the slot in the swing arm and has to be bushed to fit the slot as per TY250. The bushes on my bike are knackered and are no longer available from Yamaha. I believe that there is a more modern alternative, bit cant find out what. Thanks in advance. Ps I want to use the origional ty wheel and hub.

after going to see a ty175 that was for sale, i came away with a ty250 majesty. i have had a word with a expert who told me its a dog and leave it alone as he can sell me all the bits to build one, what should i do?

Hey All, New to the forum, just bought a 1988 TY250 Mono that has been lying up and need some help please all the way from Meath in Ireland Can anyone tell me what model i have? Its not the Pinky.. i just dont get the r or n etc. bit. It is a Mono shock though for sure. I cant source a manual.. Now a few threads down a guy has a link to a Manual but thats for a 350 not 250 :-( Anyone have one to sell? Im looking for a side stand too. Also.. What fuel:oil ratio should i use? 35:1 im guessing?I have already bought loads of parts today from tytrials.co.uk and jkhirst but its the specific manual im really after. Many thanks and hope to be on loads! Some great threads …

have a ty80 but it has a habit of eating plugs, runs perfect otherwise ngk b6 fitted new coil is it likely to be needle jetting or electrical may change points next, any idea on gap settings etc any help greatly appreciated

I have a owners/service manual for a ty250n mono metal tank circa 1995 It is in excellent condition its free to a good home or even better a swap for a ty80 manual would be nice

any hints and tips for a prospective purchaser? what to look for what to avoid? any advice welcome as looking/buying at bikes this weekend.

Hi there I have a 175 and one of the flywheel magnets has broken This might be a stupid question but does it need 4 magnets or would 2 opposite be ok if they were by the coil when it needs to spark or is there anywhere i can get a magnet from.

I'm shortly getting the top end done on my TY 250 Mono. Its currently on a .25 oversize piston and I've had two opinions on where to go next. One guy reckoned moving up to a .50 would be fine but another said I would need to go to at least .75 to make sure it was over any previous wear. Does anyone have experience or any recommendations they would like to share? Ta.

Has anyone modded the rear brake lever on their TY mono to make it more accessible? I never noticed how tucked away it is until I started riding a Montesa as well. Was thinking of cutting it and welding on a piece of metal or something from another brake pedal to extend it out half an inch or so. What do you reckon?