Report this message as spam or having improper contents
Thank you for reporting improper contents. Reported messages will normally be checked manually within 24 hours. To avoid misuse of this forum by programmed robots, we have to ask for the characters in the picture below.
RE: First time owner
NN said 2003-05-31 01:06
PRI stands for Prime. These petcocks had a vacuum shutoff that cuts off the flow of gas when the engine is not running na d in the ON or RES (reserve) position. In the PRI position thought the petcocks allow gas to flow to the carbs to get the gas up to the right level to get started after the carbs had sat a while and the bowls dried out.
BTW, these petcocks are notorious for leaking. Search the web for solutions
You can post your question, answer or comment as a guest. Or
enter your e-mail to join the forum and get notifcations of new messages.
More 1978 Yamaha XS 750 E information
Our discussion forums are intended for short messages. We also welcome more extensive motorcycle reviews.
Bikez also recommends that you check out the technical
data and the riders' rating for the 78 Yamaha XS 750 E.
You can also rate it yourself. Use our efficient motorcycle
classifieds to sell or
buy
this bike. Your motorbike gets a high quality presentation. Ads are free.