225 hpdi problem

My HPDI is having a problem with oil. It will take oil from the little resivour on the motor but wont suck it up from the main tank. Also you can not use the switch to pump it from the main tank to the resivour either. Any thoughts????
Cant be a pump as there is only one on the motor I beleive has to be a clogged or broken line?? Is there a filter in the main tank?? Kinda stumped. Will be out of town till thurs. cant get back to it till then and no fishing till its fixed.

More than you ever really wanted to know about how yamaha gets oil to the cylinders.

http://www.bwbmag.com/output.cfm?id=942859

That’s a great article.

I was impressed how Yamaha added a manual override switch to pump oil from the main tank to the motor tank. Them guys are always thinking! Good trouble shooting tool also.