sizeddenim
22.04.2021 5:14:51
what does the primer solenoid actually do? I hear it clicking when I push the key in and out, but not what is going on in there.
See full version: What goes on inside the Primer Solenoid
what does the primer solenoid actually do? I hear it clicking when I push the key in and out, but not what is going on in there.
Why is it associated to "choking " your engine?
In earlier engines, choke plates activated by solenoids closed the carburetor throat to block air flow and force the pistons to pull more gasoline into the intake. This enriched the fuel/air mix, making it easier to start a cold engine. more
Maybe this a silly question, and you'll have to excuse my almost 20 yrs of OMC & Merc operation. Exactly how does the Prime Start system work on my 04 90hp?
I was reading the manual (after almost a year of owning the motor), and to my surprise, there is NO mention of pushing the key inwards to activate a choke system. The manual does give info on how to manually override the Prime Start for a dead battery & pull starting.
Thanks for the info. It's impressive that Yamaha has developed such a feature AND have it work so well. more
Place the positive lead from a voltmeter to the positive side of the main battery. Connect the negative lead of the voltmeter to bare metal on the engine. Look for at least 12.6 volts or more. Any reading less will require you to charge the battery to full capacity. more
Look for the starter solenoid next to the starter on the engine block. Refer to your owner's manual for its precise location. Place the voltmeter positive lead to the large "Bat" connection (usually a red wire) on the solenoid, with ignition key in the "on" position. Look for 12.6 volts. If if does not read 12.6 volts, check the fuse box wires and the main electrical cut-off switch. Turn the key off. [links]
Check your cabin fuse box. Make sure the starter fuse or relay sits tight in their connectors and that the fuse element has not blown. Replace any fuse or relay that looks bad. You exchange the starter relay with another similar relay in the fuse box, then test for starter operation. If the engine starts, the relay was bad. here
Pull off your upper engine case, unclasping the cowl snaps by hand. Use a socket and wrench if the upper case has bolts. Make sure your lanyard cut-off switch has not been activated so that when you turn the ignition key the engine will start. Pull the spark plug boot from the tip of the spark plug; pull all spark plug boots if the engine has multiple cylinders. Connect coat hanger wire to the inside of the plug wire connector and ground it against the engine block. Ground all plug wires in similar fashion. here
Always follow common shop safety practices. If you have not had training related to common shop safety practices, you should do so to protect yourself, as well as the people around you. more
Remove primer solenoid and position on bench next to service replacement solenoid. Observe electrical terminals. Observe cover orientation and fuel outlet nipples. [links]
Be careful, and never rush or guess a service procedure. Human error is caused by many factors: carelessness, fatigue, overload, preoccupation, unfamiliarity with the product, and drugs and alcohol use, to name a few. Damage to a boat and outboard can be fixed in a short period of time, but injury or death has a lasting effect. here
When replacement parts are required, use Evinrude/Johnson Genuine Parts or parts with equivalent characteristics, including type, strength and material. Using substandard parts could result in injury or product malfunction. here