Sparkplug What is the recommended spark plug size for this generator

Champion RCJ8 (840) Copper Plus Small Engine Spark Plug, you can look online for socket size, usually 5/8 inch older ones are13/16

Take off the engine cover. Then remove the ignition cable from the spark plug. Then place a sparkplug wrench in. Be sure you have the right size. Consult your owner's manual for the right spark plug size.

The socket is an 18mm Sparkplug Socket for a 12mm thread plug.

if there is no spark in the plug as you are saying for that matter check the current coil and the inverter section for the loss of current if you have already changed the sparkplug if not do change

Put a new fuel filter on it and when it stalls take the fuel line off the carburetor to check if gas is getting to the carburetor. If it is remove the sparkplug put the wire on it and ground the nut of the plug on the engine block and pull the cord and check for spark between the sparkplug gap. If no spark you might have a faulty coil, when it gets hot it has no spark.

The Yamaha EF2500 portable generator uses a NGK spark plug #BPR6HS. Just bought on this week at the local NAPA store to replace the old spark plug in my generator.

Tom in Lafayette, IN

This particular generator can come with Briggs & Stratton engine (spark plugs recomended will be then Champion RC12YC).

This model can come as well with Honda engine or with Subaru engine.

These variation depend on country of manufacture.

As I do not know where are you located, I give you this which is known to me, if you have Honda or Subaru engine, my best bet will be follow this advice:

1. stop engine
2. undo spark plug and note what alhanumerics are on porcelain bit, eventually grab the sparkplug and go to closest fuel station/car spares/hardware/camping store and they will be able to tell you what sparkplug and even sell you one.

Hope this will solve your problem :-)

First check and see if you have any cracks on the cable then replace the sparkplug with new one but make sure that the setting the correct one…before you do this you may try a test but you must be very careful…No kids around, clear place outdoors, etc .
After checking, the cables unscrew the sparkplug and put very small amount of gas in then put back the sparkplug “the same one” and see if you get a sound as backfire if yes that mean it is working good. That should take care of it…let me know and again be very careful and not too much gas

Test for spark by placing a screwdriver into the spark plug wire and holding it close to a bolt on the engine. should see a spark (blue). If not, problem is likely the armature (coil). The coil is located under the engine shroud and held in place by two bolts. If you replace this part, (normally $30 to $40) you must ensure a proper air gap. Auto parts stores have inexpensive repair manuals to help.

Lee
Cherokee Small Engines

only a handful will work with the motorcycle engine you own. Also different brands (NGK, Bosch, DENSO, Champion, Esc) will work better on different types of engines. As a general rule of thumb, use the sparkplug your manufacturer recommends for your motorcycle (same brand and part number). Unfortunately some spark plugs are very specific to a type of engine and make only for that engine such as the NGK ME8 for $34 per sparkplug, compared to the normal price of $3 per sparkplug.