1.You can contact the customer service. for any question regarding the product.
2.Ask the question in English to get answer faster.
3.Keep your question short and to the point.
Garantuotas saugus apmokėjimas
A part of the review has been auto-translated.
Двигатель полностью выполняет свою учебно- познавательную функцию. Качество изготовления на высоте, внешний вид очень, как по мне, приятный.
Оси вращения крепятся через миниатюрные подшипники. Вращение всех узлов двигателя плавное и тихое. Сборка отличная, все чистое, никаких отпечатков пальцев, потеков масла, грязи и т.д. Просто идеально. Основные материалы – сталь, маховики дюраль, противовесы – латунь.
This is a vacuum engine. When properly adjusted it works well
On mine the round rod at the top, the one that moves the hole covering leaf type valve, needed to be adjusted. This can be done by holding the levers at the side with thumb and forefinger of one hand while moving the round rod slightly up or down. When moving the flywheel counterclockwise, a cliciking soind should be heard.
One needs to play with it by trial and error until the motor runs well. The hole in the front needs to be completely covered when in the lower position.
Tips:For questions about your order, place of delivery, product discount, taxation, delivery time, warranty, shipping, payment, exchange rate, and other questions unrelated to the product, please contact customer service.
A part of the QA has been auto-translated.