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I have found that the biggest improvement for the Sherpa clutch is to use a rear brake lever or a long front brake lever on the clutch pivot on the ignition case. Make sure everything is well lubricated and use a Venhil teflon lined cable. I use Barnett plates on all of mine so I can use less pressure on the clutch springs. I have heard of folk using 4 clutch springs if they are new ones. I tried with Barnett springs and it slipped trying to start a 326. Went back to 6 old springs set at 4.5 turns out.

Over here in sunny Australia any club day has to have at least 1 First Aider in attendance with a good first aid kit which all the clubs have. Any Interclub or Open event has to have a Paramedic in attendance. He or She is usually bored for most of the day but is sometimes needed for minor cuts and bruises. We held the Queensland Modern Bike Championships on the Weekend and there was only one bigger injury which was a footpeg into the shin of a rider rather deeply. He went to get stiches after he finished for the first day of a 2 day trial and rode the next day but rather gingerly though. So they are needed. We say who the first aid person or people are at the Riders Briefing so everyone knows. Graham.

If you look in any manual including the owners manuals they all say to back the clutch nuts off 4 turns. So start from there and adjust according to slippage or clutch lever stiffness. A Venhil cable also make a big difference.

Hi Art. The black wire is correct. It goes to the coil. You would be best off routing the green wire up to the coil and earthing it onto the coil bolts. The yellow is for the lights and from your photos you have no lights so just tape the end of it up. Graham.

Hi Art. Is the spark happening at the correct time? Bultacos like to be timed reasonably often. Next one might be the condenser, it may look like it is sparking on the outside but when the spark plug in in the bike sometimes they are not sparking. So check the condenser. Are the points clean? These are a few things to try. Graham.

Why not just use a spacer? That would be a lot cheaper and easier.

To answer your question about 2 or 3 crank bearings have a look at the Primary side crank seal holder. If it has a long inner sleeve on it then it only uses one bearing on that side. I think most of the Sherpas only use one bearing on each side. A lot of the Pursangs and other high performance engines use 2 bearings on the primary side. Graham.

In Motion have the small round Sherpa T stickers for not very much money. That`s where I got mine from. Having stuff turn up on your doorstep is brilliant I think. Graham.

Welcome to Trials Central balga. There are quite a lot of us Aussies on here so be warned. The forums are great and any questions you have are soon answered by someone who usually knows what they are talking about. Have fun. Graham.

That one should be the Made In Spain sticker. My M159 had a World Champion sticker and a European Champion sticker behind the fuel cap on that flat part of the tank and no one seems to sell them. I have the old ones just need to find someone to copy them for me. Can you see where the round Sherpa T stickers go on the airbox. Graham.

I have three Sherpas, a M199B, a M199 and a M159. I have an In Motion CDI on the M199B and it is brilliant. The auto advance in the CDI is great. This makes the engine in the B seem very nice even though it is a M151 engine. It always starts and it always runs very nicely. The other engines are both nice the M199 has to be a Wednesday motor as it runs really well but you can only tune it for bottom end or quicker revs where as the CDI you can have both with no changes. I run the standard flywheel on all of them with 250 primary drives on them all. Graham.

Hi Fourex. I don`t think anyone made any top triple clamps for the Bultacos with the handle bar clamps moved. All of the one I have seen have been done at home or by a machinist. They are very easy to get used too standard though. I have never felt the need to change mine and I love trying new things on it. Some of the Pursangs have the clamps which bolt onto the top triple clamp with long 8mm allen head bolts through the top clamp. Some even had 4 handlebar clamp bolts in them. Remember they won the first 5 World Championships with the stock triple clamp arrangement. Graham.

I would question them about those marks. We can`t really see the welds in that photo. The only hassle would be you might have to pay the postage to send it back which can be a major pain in the you know what. Get onto them and ask what they will do about the marks. Graham.

All of the older Pursang models all had 6.5 inches of travel which is the same as the Sherpas and the internals are basically the same. The Pursangs had different damping characteristics. They started to change around the MK 8 Pursangs when the MX bikes started using longer travel suspension. Graham.

Measure the sizes of each side of your Mikuni and contact In Motion and talk to them. They will have many standard ones one of which will fit your bike.

On the Sherpas JM is before the engine number and JB is before the frame number. Yes it should be a blue tank and sidecovers with a blue frame and mudguards. The engine and fork bottoms are satin black . They came out in late 1978. Most were made in 1979 and that`s when they were released in Australia. In 1980 the factory didn`t do much of anything then the M199Bs came out in 1981.

How long have you had the bike? Have you ever replaced the crankshaft seals? That is where I`d start. It sounds as if when it gets hot the crank seals are leaking and letting some air in. You don`t have to split the engine to do this just pull the ignition, the clutch and primary drive off and pull the seal holders off. Replace the seals and away you go. Graham.

The M 92 barrels are used on the M92, M125 and the M151. I have a 151 engine and the barrel still has 92 stamped on the top of it. I would also say the Alpinas from that era might have the same barrel as well. I`m not sure on that one though. Graham.

I have used molasses in a Bultaco Metralla fuel tank that had heavy rust in i. I just filled the tank up with molasses and left it for two weeks and then emptied it out. Inside was spotless with all the rust deposits gone. Rinsed it out with water and then some petrol and it is still going well after about 2 years. It rusted because it was left empty. I have been told that vinegar works very well too. Same process. Graham.

The Italpart pistons that In Motion stock have the advantage of using stock Mahle/Bultaco rings so that is great. I have a Wiseco in one of my Sherpas and it has been in there for about 3 years now and it is still going fine with no hassles. I have changed the rings once in that time and they were less worn than the wear limit. Graham.

Hi fourex. No, it was only in the UK I think because of the rules saying that you can`t have a Fibreglass or a Plastic fuel tank. I know NZ, SA and the USA all had Plastic tanks and I think all of Europe also had Plastic tanks. Graham.

Welcome to the best forums around Bevelferal. There are quite a few of us Aussies on here and quite a lot of us Queenslanders as well. Just ask any questions you feel you need to ask as someone will have an answer for you. Cheers Graham.

What most people do is add a flat bar which goes across the rear tubes under the seat. It is curved like the seat base. Graham.

The 199B side panels and airbox don`t fit any other model. I bought some to go on a M199 and they don`t fit the M199 or a M199A. The pins ore in the wrong positions. I would also put the engine back into the correct frame. The late Sherpa frames are very good. You have a M158/9, M182/3 or a M190/1 airbox in there now. They are the ones to have as they breathe better than all of the other airboxes. Graham.

Hi Evo Boy. The longer one goes on the rear brake arm and the tight bend goes over the brake lever and the shallow bend goes over the brake backing plate where the axle goes through. The front one is the same. Graham.