OSSA

Guys , newbie about to purchase Trials bike here Really like the look of the Ossa but the horror stories concerning the 11/12 model are putting me off thoughts please

Ok, I broke one of the 'Dogbones' in my rear linkage. It is the new type with a bolt. After a lot of thinking, it probably was my fault. I think when I lubed it last time there was still silicone grease in the threads. So the locktite couldn't hold- the bolt backed out and must have jammed against the swingarm, breaking the shaft. The too much for one side still left when I hopped over something. Anyway, the dealer ordered the part, but OSSA sent the wrong one! There appears to be a mixup with the part numbers in the manual. So...does anyone know where one may be? They are going to try and get one, but I'm looking also. Please let me know. Mark

I was wondering if anyone could tell me the torque setting for the cylinder head nuts on my 1975/6 MAR. Also is the paint on the hubs satin or gloss black? And.....does anyone know if the rear shock decal (BETOR) is available anywhere? Many thanks in advance, Nigel.

Tearing down a 76 MAR and having trouble getting the threaded ring that holds the head pipe to the cylinder off. I've sprayed it with penetrating oil then hit it with a punch and hammer...no go. Assume it's a right hand thread but didn't want to bash on it too much in case it isn't. Not only does the threaded ring seem to be seized in the barrel, the pipe itself is loose. Perhaps there's a gasket missing or long since blown out? Heat and cool it with a propane torch maybe would loosen it up? Any tips out there?

I have purchased a bike listed as an OSSA MAR 250 1975 Documents confirm this. Engine number also correct - M222.... However, frame number is B241... which appears to be for a MAR 350. Any thoughts ??

Hello everyone, after 3-4 years of being reliable my 250 MAR yesterday developed a new noise. what happens is when the clutch lever is pulled in with the engine running there is a sort of knocking/graunching noise all the time, which disappears again when the clutch is released. will strip down next weekend to have a look for anything obvious broken/damaged , but would welcome any ideas on what is causing the noise . thanks in advance for any help. dave

Seem to have developed a leak on my clutch master, fluid seems to be leaking from around the sight glass. Anyone else experienced this and any suggestions on a fix? I am not sure if they are a press fit or if there is a O ring or are they just glued in

Can anyone tell me if all the MAR 350 models came with the white/green stripe color scheme or did some come in all green with yellow writing? I thought they were all white but I'm usually wrong.

hi ,any one had much success lightning clutch action on Mk 1 mar .I have lenghtened the actuating arm on top of the crank case , and used one of those geared type levers at the handle bar .still very heavy .

Anyone know where I can find one of these clutch case breathers from in the uk or North America? http://trialparts-shop.de/produkt/ossa-motorentlueftung/

Hi does anyone know where I can buy the easy start kit from for the ossa in the uk I have been out on the bike again today sometimes it starts first or second kick then sometimes in takes forever to start, apart from that the bike is awesome??thanks in advance Lee

Hi I'm hoping someone can help me, just started to put my engine back together and have checked the end floats and they are all too big as when I took it apart it had no centre gasket. Can anyone help me with where to obtain new shims for the crank, layshaft, and selector drum? I have looked everywhere and all I can find is assortment boxes that are 10 and 15 thou thick and I could do with some less around 5 thou. Thanks, Mark

Hi, hopefully someone can help. My 2012 factory gearbox has just decided to lock up. After following the instructions I can find on the net I've removed the 5 bolts, sprocket and gear lever but it still feels solid when tapping the shaft. I don't want to tap harder in case there's something I'm missing. Any ideas.

Can anyone please tell me the correct amount of oil per leg needed for the OSSA TR77 which has the long leg Betor forks. Presumably these are similar forks to those fitted to the OSSA MAR mk3? Likewise the gearbox/clutch, amount & type.

Had the flywheel cover off my 2013 bike And it looks like is hasn't been off very often By the previous owner and there a bit of rust In there, given it all a good spray with wd40 Is there any way of any crap getting in to the Motor from there? And us it worth taking off the Flywheel And giving it a proper clean ?

Got a bit of a weep from the braketech clutch master Cylinder, it's coming from the piston rubber. Is there any thing I can try before I spend £50 on A seal kit

Wonder if anyone knows where I can Get any long carbon frame guards, I Have seen them on a satellite teams Bikes but can't find where to but them

Almost finished my rear suspension linkage clean and lube.Are there supposed to be a pair of spacers on either side of the top shock mount? I'm sure i didn't take anything out and can't find any in the parts manual.

Hi is there anyone on teesside I can meet up with to take a look at there wiring please I need to wire in a kill switch as mine has been removed for some reason thanks Lee

Have totally stripped the bike down to the frame for powder coating but still have the fuel pump to remove. It seems to have quick connectors on the fuel lines but I have no idea how to separate them. Anyone know how?