Quick question on oil rod adjustment on a 1999 Yamaha SX200TXRX (EFI).<br /><br />For a little background, my 02 density sensor and draw tube are completely fouled with carbon, and I'm doing what I can to clean and re-test to see if its still operating correctly. Its looking like its too far gone, as the voltage output stays at around .5-.6V but doesn't react when the throttle plate hole #1 is blocked when running on the muffs. Before I cleaned up the sensor, the voltage output would slowly climb and seemed to stay around .8-.9V, which would result in too much oil, if I understand this stuff correctly. I will probably need to order a new 02 sensor over the winter. <br /><br />Because I don't know the history of this motor, I just purchased a set of low pressure fuel pumps, thermostats, fuel/water separator filters (Racor and tank mount), sparkplugs, water pump/impeller, etc which I haven't yet installed. I also plan to inspect the VST pump filter and PCV valve to see what shape they are in. FYI, based on all the carbon I found, I just went through a sea-foam shock treatment.<br /><br />I just pulled the boat for the season, and ran through about 745 gallons of fuel (w/ ringfree) and about 12 gallons of Yamalube, which gives approx 62:1 ratio. The gas
il ratio seems pretty good, but I noticed that the oil pump lever is about 1/16" (~ 1.5mm) away from the stop when the throttle is at idle.<br /><br />The Yamaha service manual states that the oil pump lever should touch the stop when the throttle valves are closed.<br /><br />The SELOC manual states that the oil pump lever should hit the stop when the throttle is at idle position, and if not, to adjust the lever to hit the stop with the throttle valves fully closed. <br /><br />Without the history of the motor, I can't tell if the 02 sensor has been completely neglected, or if I have a legit over-oiling problem.. which could be caused by a number of things, most of which will (hopefully) be covered by installing the new pumps and filters mentioned above.<br /><br />The question is whether I should adjust the lever to hit the stop at idle (and/or with throttle plates closed), or leave things as they are now and be happy with the 62:1 ratio?<br /><br />-- Tom
il ratio seems pretty good, but I noticed that the oil pump lever is about 1/16" (~ 1.5mm) away from the stop when the throttle is at idle.<br /><br />The Yamaha service manual states that the oil pump lever should touch the stop when the throttle valves are closed.<br /><br />The SELOC manual states that the oil pump lever should hit the stop when the throttle is at idle position, and if not, to adjust the lever to hit the stop with the throttle valves fully closed. <br /><br />Without the history of the motor, I can't tell if the 02 sensor has been completely neglected, or if I have a legit over-oiling problem.. which could be caused by a number of things, most of which will (hopefully) be covered by installing the new pumps and filters mentioned above.<br /><br />The question is whether I should adjust the lever to hit the stop at idle (and/or with throttle plates closed), or leave things as they are now and be happy with the 62:1 ratio?<br /><br />-- Tom