1989 Yamaha 150 ETXG problems!

[jim daigle]

I just picked this beast up, its got good compresion and will eventualy make a great motor I just need a little more knowledge on its proper operating procedures.. I have 2 two oil resivours one mounted on engine and one seperate, all relative cables ie wiring harness's I tried cranking it with key on bench and it will only alarm out on what I assume is the oil level in tank mounted on engine. The starter dose crank the engine when i jump the solinoid thats how i know there is good compression am i missing anything here or do i need to digg deeper into the wiring here? Is there a fault mechanism that trips out the start circut when alarming? Oil tank on engine is empty and tank in boat is half full and pumping oil...jim d USA model ETXG

 

[ICEMAN]

Re: 1989 Yamaha 150 ETXG problems!

when you crank the motor, does the alarm sound and stay on after you release the key? if so, there is probably an ignition cut off switch located on the control. If the lanyard is not on the button, the warning horn will sound. It will crank, but not fire up. if the boat tank is empty, and the engine tank is half full or better, it should start, then after a few seconds sound the warning.

 

[BruceAML]

Re: 1989 Yamaha 150 ETXG problems!

You might want to know that a 150 ETXG is a 1988 motor and not a 1989.

 

[jim daigle]

Re: 1989 Yamaha 150 ETXG problems!

Thanks for the corection on the year 1988 got it! Now as for the other responce I can not crank the motor with the key at all only when i jump the starter solinoid and yes the alarm is sounding when i release the key to the run posision after turning it to the crank posision...

 

[edgutgesell]

Re: 1989 Yamaha 150 ETXG problems!

I would not try to start the engine with the engine oil tank empty. If it starts, you will probably seize the engine for lack of oil. Use premix in a portable tank. Read the article below. It is the best article explaining how the Yamaha Precision Blend system works!!!

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

 

[BruceAML]

Re: 1989 Yamaha 150 ETXG problems!

Engine oil tank needs to have oil in it. Best is Yamalube 2-M. Is the external oil tank wired properly? It should fill engine tank. Do not run engine without using premix until you have corrected the problem.

 

[jim daigle]

Re: 1989 Yamaha 150 ETXG problems!

Thanks all that have replyed I have no intention of starting the engine nore have i indicated that I would I just wanted to know if there was an interuptor circut that prevents the starter from turning with the key no fuel is in the carbs therefore the engine will not fire I am just testing the circut that was provided me with the engine.... Dose anyone know the answer too my question or not Im not and idiot just under knowledged here on the yamaha stuff ae?

 

[rodbolt]

Re: 1989 Yamaha 150 ETXG problems!

on the 88 V yamahas there is a controller under the engine tank, with the toggle switch up it bypases the module and manually transfers oil.
the remote tank MUST be properly wired and at least 1/3 full to transfer oil automatically.
the remote tank witch(SWb) must be closed,yellow lamp on the tch off, for automtic oil transfer to occur.
with key on engine off the brown wire at the remote tank has 12v,the black is SWB ground and the black/red is lamp and oil control feed back to tell the controller there is actually oil in the tank to transfer.
on the engine tank, blck is signal ground for white,brown and red.
white to ground turns the transfer offSW!,brown to ground turns the pump onSW" and red to ground sounds the alarm and causes the CDI to enter RPM reduction.
if the white wire in the 10 pin harness has a ground condition,white in the 10 pin is stop, and the key is turned to start,brown on the 10 pin, the CDI sees both a stop and a crank signal and will sound the alarm at key on start position.
cant have both signals.
there is no interlock between any alarms or systems and the keyswitch.
what control box is the hull eqipped with ?

 

[jim daigle]

Re: 1989 Yamaha 150 ETXG problems!

Thanks for that intelect much appriciated as for the control box on this one it is on engine just wanted to make sure the system didnt have a interuptor to prevent engine start with oil low or empty and up too now at this point it seems that all oil systems are functional and fully operational the engine will not crank with the key must be a missing conection or bad starter rerlay/solinoid This site and all that participate are outstanding and I hope to be of service to you at sometime with what little knowledge I possess Thanks again for all your responces and have a wonderful happy holliday season to come happy boating ,,,Jim D

 

[rodbolt]

Re: 1989 Yamaha 150 ETXG problems!

the 703 and 704 control box have a nuetral start switch in the box.
as you wont say which one your running all I can tell you is trace the brown wire from the keyswitch to the control box and back to the start solinoid.

 

[Ray Neudecker]

Re: 1989 Yamaha 150 ETXG problems!

Not uncommon for the swicth to die from corrosion. The brown wire at the switch must go postive when the switch is placed in the start position.

 

[jim daigle]

Re: 1989 Yamaha 150 ETXG problems!

Brand new switch and alarm assy from Yamaha. As it turns out the control box was neglecting signal therefor no start thanks all that put forth efforts here...