What are some reasons why two-stroke engines wont start? This can be caused by a rusted cable or from a dirty carburetor. When this happens, it can be confusing since the throttle seems to have returned back to the closed position. Another cause is when the throttle cable stays in the 'open' position. The most common cause of a throttle sticking or becoming stuck is when dirt and debris get wedged between the handlebar and throttle tube. When you start to feel the throttle stick, its very crucial to look into what is causing it in order to maintain your safety and the safety of others riding with you.

Rear end vibrates when you accelerate out of turnsĪ sticking throttle can cause any bike rider big problems - especially if the rider panics when it happens.

Headshaking on deceleration caused by the front fork.

Below are some signs that you should replace your suspension. Whether you are hitting the trails for a weekend, doing tricks, or racing around the track, the Bultaco Sherpa T suspension should be well maintained. Keeping the suspension of your Bultaco trail bike in good order is just as important as the machine itself. When does the Bultaco Sherpa T suspension need repair?

When the heel of the contact point becomes worn, the timing will gradually become out of sync. Unlike the four-stroke motors, this problem is only seen in two-strokes, since there are no valves operating in a set sequence. If the Bultaco Sherpa T timing is close to top-dead-center, or TDC, the piston is caught at just the right moment and will cause the motorcycle to lurch backward. Two-stroke motorcycle models can run in reverse from first gear if the ignition timing is off.

What causes a Bultaco Sherpa to run in reverse? The companys most notable product was the Bultaco Sherpa, a vintage trails bike, which revolutionized off-road racing in the 1960s. Paco Bultó was the founding father of the Bultaco motorcycle brand and is the grandfather of famed MotoGP star, Sete Gibernau. Bultaco is a Spanish motorcycle manufacturer that produced two-stroke motorcycles from 1958 to 1983.

Bultaco motorcycles serial numbers