OX 66 - Ran after fuel filter changes , then died starving for fuel ?

[No more boats]

Yamaha ( purchased recently ) OBs new too me coming from IOs
Motor is a OX 66
250 Hp
2 stroke
Always have water connected when starting engine

Last week changed external fuel filer ( one with view bowl )
New yamaha primary fuel filter ( dirty )
primed both bowls with fuel
engine fired right up ,
During week started multiple times idling, few minutes , shutting off
yesterday idled minute then heard engine sputering , died ,
engine cranking not firing or even trying too start ?
Maybe I hit safety clip , NOPE
1/4 tank fuel
Removed primary filter Possibly not sitting correctly , Seemed OK
fuel in both bowls , not firing ( hitting fuses later ) also air flow sensor , will remove and clean - fuel pump ?

Previous owner showed me recent invoice shop worked on and cleaned VST

Noticed when I pump primer bowl I dont see fuel entering ? , for kicks removed hose just before primary filter , pumped away , should I see some fuel coming thru hose ? smell it but dont see it coming thru ?
Vent block ?
Possibly something right in front of me , so simple

 

[mike_i]

"Noticed when I pump primer bowl I dont see fuel entering ? , for kicks removed hose just before primary filter , pumped away , should I see some fuel coming thru hose ?"
Confirm that all hose clamps are tight on fuel line between the primer bulb and it's not sucking air. Check clamps on fuel filter/water seperator if you have one and the fuel tank/fuel switch. Also try pumping the bulb with the gas cap removed. You should have gas flowing as you prime the bulb.

 

[No more boats]

FIXED - thanks for getting back , Had two things going on .
crazy as I indicated earlier engine ran multiple days few minutes each day All of sudden died , I did get hand pump pumping fuel , Think O ring on top portion of fuel seperator was not sitting properly allowing air , Opened fuel tank filler ,
But think the main issue was key switch , wiring , was loose ,
soon as I we tightened fired up
Removed and cleaned O2 sensor
Slowly learning about this new engine too me

thanks