lemur

Do you have roughly 12 volts DC at the fan thermostat input? If not check the rectifier/regulator for AC input and DC output. ... I assume you have a multi-meter or improvised test light

It's a good indication yes, unless you need additional power for lights or batteries. Very encouraging, that's where the fan comes in because there can be and are often separate coils dedicated for that.

Many thanks and congratulations on hosting a terrific Trials event April 👍 a little rain shower mid day boosted scores but I think everybody had as great time as I did 🏅. I didn't take many photos because I was busy riding, did get this one:

Does the tip over sensor appear damaged? It's located back there close to the rear fender and tire, plus it can definitely stop the engine from running.

Good news for anybody that already rides one. It's another year away from becoming parts obsolete.

I don't have a problem with any of them, but the PWK28 jetting specs for the TRS are easy to find online and will put you in the right ballpark for ordering parts.

The fan speeds up when the engine does, just give the fan blades a spin with your finger and if it doesn't make the noise that's not it.

Make sure that noise is not just your fan. The bearings behind the magneto are your crankshaft bearings, it won't be that or she wouldn't run. If it runs good, keep searching for something simple.

That's easy; No, nobody sells specialized competition trials motorcycle parts 'cheap', online or otherwise, all the trials stuff is outrageous expensive with shipping, taxes and material costs escalating out of control. To get motorcycle parts out of a factory 'cheap' somebody would need to be thieving them.

Would it work if you fitted fatter o-rings onto the existing piston? ... more of a bush fix but o-rings do come in different sizes and all you need is a fit that seals without sticking.

... if you do sand friction plates or steels, make sure your sand or emery paper is on a very flat surface.

Water evaporates, take them out, dry plates in the sun and give them a light sanding if they look glazed.

Hydraulic clutch should never be a hard pull at the lever, something inside there must be coming up solid tight. If there was air in the hydraulics it would feel like mush at the lever and your clutch would mostly drag. Chances of you having worn out the clutch in one year is slim to nil and a worn clutch won't hold power, it just slips. Plus one on checking your master and slave cylinders for damage to the rubber seals and o-rings. Physically inspect the friction plates to make sure none of the corks have folded or peeled off and doubled up, plus make sure the spaces between the cork friction pads are free of debris and your fluid levels correct. What's all the brown on the clutch parts is that rust? Water in your transmission oil will promote rust and swell the friction pads more than oil thereby reducing the clutch movement.

Plus your insurance broker, even in WA state you can't road plate a vehicle without insurance coverage in place first.

You must live on an island. Any motorbike shop in Canada buys you nothing when you are shopping for trials bikes and parts 😆 & we obviously live in completely different parts of the planet where distance has a completely different meaning. 30 minutes drive for me is a trip to the dump or the nearest gas station and my trials bike importer has a showroom I have never seen because it's 4500 Km and 40+ hours drive away. So ya, my dealer that lives 4 hours away and sells out of his truck at events is by far my best option.

Google up: "gasgas motoplat wiring diagram" Yellow wire powers your 12VDC accessories and has a resistance value of 1K ohms, the black 45 ohms and blue 35 ohms. Ignition coil should read 1.5 ohms Rectifier and regulator are for the 12 VDC accessories including the fan.

Maybe we just have better dealer support 😎

😆 Only in Canada you say. Didn't know it was special, next event I'll take pictures 😎

Wiring diagram is always the best place to start. http://ossa.2y.net/ossa/onlinemanuals/ossa5speedmanual/Page124.jpg

What a shame you would need to run bias ply tires just to satisfy a DOT rule, radials are one of the best ever upgrades on a trials bike.

Problem #1 Instead of saying DOT approved on your tires it says " In USA and Canada for off road use only "

It's a 2-stroke engine, if the crank case is not sealed from atmospheric pressure your engine would not operate.

Before video we used service manuals 👍

Yes very lucky, I have access to all the parts that my dealer brings with him to events, plus new tires, boots and helmets. Jitsie helmets to be exact 👍

First off we have no idea what part of the world you live in so your availability to procure old gasgas parts is difficult to predict. Your front disc brake has 2 pistons, after Y2K 4 piston brakes became the industry standard and 4 pots offer noticeably better performance. Top end is part of it but from what I've seen with gasgas over the years, the main bearing seals are another item that may well require replacement. As previously; how easy does the bike cold or hot start? <- That is possibly the most important indicator of the bikes current health and worth.