What's normal Force 75 fuel flow

[donnjax]

While cranking engine with fuel line to carb disconnected, how strong a flow should I expect? Also, is the device mounted next to the coils an ignition control or what? It's has a part #815279-4. I've ordered a manual but it's probably still two or three days out. Any Force 75 advice would be appreciated. Mine has no spark at any of the plugs.

 

[roscoe]

Re: What's normal Force 75 fuel flow

I could be the "switch box" or SCR as they call it. It distributes the juice to the coils in correct order. <br /><br />Hard to tell without better description.<br /><br />As far as fuel flow, are you asking about how much gas would come out of the gas line at cranking speed? I would say not much. But have never checked it. Thats why we have to pump up the primer bulb to provide pressure, and need to use the electric primer selonoid. <br /><br />I believe the fuel pump only provides about 2-3 lbs of fuel pressure when running. Only enough to use 6 gallons of gas per hour.

 

[donnjax]

Re: What's normal Force 75 fuel flow

Thanks for the info on both. SCR sounds about right (and it does feed the coils). As to the fuel flow, I relate things more to cars and cranking the motor over with the feed line going into a measuring can. After pulling my carb to clean and inspect I decided to check the flow on my motor's pump. It was rather weak compared to a car's fuel pump. From what you say, that sounds normal for an outboard. Thanks.

 

[roscoe]

Re: What's normal Force 75 fuel flow

A fuel pump rebuild kit can be had for $10. Takes about 10 minutes, maybe 20 the first time you do it. The diaphrams get old and can get holes, also oxygenated gas with methanol or ethynol dries them out. I would do it if your Force is approaching 5 years old. Cheap insurance.