OSSA

I have a 72 OSSA MAR. It has run but right now it doesn't want to start at all. I have gas and spark so I plan to take it to a friend that has a power starter to get it going. Unfortunatley, my clutch is sticking at the same time. I have asked on this board about both of these issues but since they are occurring together, it seems like a whole different situation is happening. My question is, how can I start my OSSA on a power starter if the clutch is sticking or is there a way to get the clutch freed without the motor running. If the bike is in neutral, the clutch is not keeping the motor from freely going round when I crank the kickstart lever so is the clutch act…

Don't know where I've been the last year that I haven't seen this machine ! I guess UNDER a log Anyway , I am VERY interested in buying one for my next bike ,like in a couple months. I am used to FI , we have been running it on our MX bikes and race quads since about 2002 Is there any way an individual can remap this bike? No dealer anywhere close , maybe 300 miles. What is the parts avail in the US ? How has the reliability been? Anything else I need to know?

Hi there all,new at this forum buisness so go easy on me,i thought i was close to buying a new OSSA TR280 (2012),but managed to get a ride on a 2012 model at a test ride day last week,i was very disappointed in the clutch drag the bike had and neutral was totally (unselectable)with the motor going ,i realize this has been a sore point on some or most of the bikes,just wondered what all you owners have done (oil type and adjustment wise) to overcome this problem? I have sent of emails to quiet a few dealers in a few countries and this is not an isolated problem,some have found the AJP master cylinders bypassing from new and need a repair kit installing and say you need to …

mates enjoy it

I believe the carb on my 72 OSSA is a Makuni (VM26) . Cleaned the carb completely and for the most part the bike runs pretty good with the exception of a sticking throttle and good idle some times not good other times. The throttle linkage isn't new but seems to work real well. Most of the time the linkage works freely and I can hear the slide shut but sometimes it gets stickty. Is it possible that my internal carb spring is too weak? Just in case it matters for some reason, I am not able to get the the adjusting screw that moves the slide to make much difference no matter where it is located. I seem to be setting the idle with the linkage fine adjust at the top of …

Im looking into a new bike ad I was going for a montesa. I orignally looked at ossa's but heard alot of negativity about the 2011 bikes, which over shadows the good points really. ive read a few bits of topics but theres no real topic on 2012 bikes yet. is the 2012 a much better bike with all the previous problems being solved? or are there still issues that need addressing?

I have a 72 OSSA MAR. I just got it and it ran pretty good. I knew I was going to slosh the gas tank but thought I could run it a bit before the slosh came in the mail, etc. In short, I ran it one weekend and the throttle was sticking pretty bad so I knew it was time. I sloshed the tank with Caswell epoxy coating and while the slosh was setting up (total bike sat was two weeks) I cleaned the carb which had lots of fiberglass goo but is now spotless. Also the plug had a thin fiberglass film baked on. Now new plug, clean carb and it won't even cough. Before it at least tried to start first kick. Do you think that goo is causing some problem with the rings or what. …

I know it's not quite trials, but has anyone seen the beautiful work of art that is the expansion chamber on the new Ossa enduro-check out the Ossa Spain website-how DO they do that welding..... Will-in-the-mud

Press release received with these pics. Release is in Spanish only though so no further info at this point.

I am in the UK and have just acquired an Ossa SDR from the US. It is 95% complete but has no lights and no wiring harness. Can anyone help me with a wiring diagram - the one that is freely available on the net is nothing like my enduro bike. Did the SDR have a battery. There are 5 wires coming out of the magneto - 2 yellow ones, a red one , a blue one and a black one. They all go to a junction box. The blue and the black ones then go to the motoplat coil. Within the headstock gusset is a motoplat regulator. It is not connected to anything. It has 5 terminals; one is marked [in Spanish] gree; 2 close together are marked red and a further 2 close together are marked yello…

Trying to clean up some of my cables on my 72 OSSA MAR. Had the clutch cable off and now the lever even with lots of movement on the clutch activating lever on the case will not disengage the clutch. It is like something is not correct with the clutch actuating rod. I believe there is a ball in there but not sure where it is or if it could have fallen out. Any thoughts would be appreciated. Jim in Folsom, CA

Have a 72 OSSA MAR and looking for 7 or 8 inch high bars (7/8 inch OD) preferably in the USA but doesn't need to be.

Right now I have a pretty much stock 72 MAR. It has what appears to be a stock four inch high bar and stock foot pegs. I am new to trials but I believe that I want to be slightly more erect. I have read it suggested to move the pegs down appx. three inches (weld plate to frame) for a lower center of gravity, but I have also been told that it is better to raise the handle bars instead and leave the peg height stock to maintain clearance to the side of the skid plate. Any suggestions whether to go up (raise handle bars), or down (lower pegs), or both would be appreciated. I do plan to modernize the pegs (wider and springs), but wanted to get the whole picture before go…

Hi there, can anyone tell me how and where to fit a kill switch on a 1968 Ossa Stiletto. The only wiring on the bike is from the magneto to the coil/regulator and from there to the plug cap.

Hi, Last year I picked up a cheap 250MAR 1974/5 and promptly fell off first time out due to my own incompetence. I'm fairly new to trials but the Ossa definately did not react the same way as my Beta Rev3 when I went up a gentle bank. The result was much pain, blood, 8 stitches, more pain, then a very nasty hospital infection with lots more pain... and it also put me off work for 75 days....did I mention the pain? Anyway I'm all healed now so back to the question. Looking at the bike it appears to have been modified with shorter rear shocks fitted than standard, I hear this was a modification and standard on later bikes but I'd like to get it back to somewhere near o…

congrats to Emma Bristow WON the 2011 FIM Women's Trial World Championship 2nd ! with her OSSA ! amazing bike ! cheers mate

congrats to Guy Kendrew, won his 2011 british trials championship expect B class ! with his OSSA ! keep it up good work ! I think his one is just only 2011 TR280i, instead of a factory replica ! otherwise , the rest eat dust ! cheers mates http://www.trialscentral.com/cms/files/2011%20ACU%20British%20Trials%20Championship%20Final%20Standings.pdf

The previous owners did a good job of wiping out the exhaust threads on the side of the cylinder. One previous owner had rigged the exhaust ring to be held on with four small springs that also attach to the cylinder fins. The ring is held in place but since there isn't much left of the threads, it does leak some exhaust gas. How bad is this for running since most of what I will be doing is slow speed? Are there any short term fixes and what is the best long term fix? Thanks for any help on this. Jim

I have just got a 350 TR80 and its missing the front end of the brake linkage, the bit that goes behind the frame and ( I think) under the swing arm, does any one have a picture of one so I cane make one ?

As a prospective buyer of the OSSA, I would be really grateful if all you owners could say what you think, is it a good clubmans bike, is it worth the premium over the rest of the 2 strokes and has it been reliable? Thanks