I just seperated the tapered crankshaft from the rotor of my coleman generator ( coleman powermate 2250 with a 5hp briggs and stratton engine). I applied PB blaster, and hit the end bell with a dead blow hammer. It came off no problem. I was wondering if there was a woodruff key or any other key inside as I did this. I don't remember seeing one fall out, but it could've in the process.

Take the through bolt out of the end of the alternator / rotor shaft. it is a long bolt. The shaft from the engine is tapered and unlikely to just pop off. Find a bolt that will screw into the end of the rotor shaft (hardend) find a metal bar that will slide into the rotor long enough so the bolt tightens down on the bar, it will pop the alternator off the tapered shaft

It is pressed onto a tapered shaft

If it is a Briggs & Stratton engine it most likley has a fuel pump

depending on your model most have a tapered shaft and you need to loosen the center bolt that goes through the generator rotor and into the crankshaft...then you will require either a puller (some models have a ridge that fits a power steering pulley puller perfectly)..or you may be able to pop the shafts apart by giving the loosened bolt a sharp rap with a ball peen hammer

A lot of these have a Woodruff key and are on a taper.

Some have success in seperating by putting a bolt in the end of the rotor shaft and pulling with a slide hammer to seperate. Make sure bolt has MANY threads engaged. Slide hammers are an autobody tool with a weighted handle that slides on a rod until it hit the end stop giving a sharp pulling force. Some have tried to fake this using a chain and a weight to give a yank on the bolt.

I can't be sure about yours however.

20:1 that's 1/4 pint to a full tank of fuel.

Well, if Briggs and Stratton engine, then try briggs and stratton.

If Robin / Subaru engine, try there.

Write down the model type and serial numbers, then pay a visit to local small engine repair shop and have them order for you.

the rotor has one bolt that goes through the rotor shaft into the crankshaft. the rotor is tapered to fit the crankshaft. remove the bolt and use a brass drift pin on the rotor shaft and give it a hard rap with a hammer. the rotor should come right off the crankshaft.

If it comes with a Briggs & Stratton 3.5 HP series 93400 engine, then the oil capacity is 20 fl oz (0.59 L). Hope this helps!

you cannot just pry it off...this model has a tapered shaft...

first remove the plastic cover underneath...then disconnect the wires and set the cover aside..loosen the center bolt that clamps the rotor to the crankshaft (loosen but dont remove...just thread it out approximately 3/16-1/4 inch) and use an automotive alternator/power steering pressed on pulley removal/installer tool to put pressure on the bolt and pop the taper loose..the ridge on the rotor is the right size for this type of puller tool....you may need to put the puller really tight and tap the end of it to break tension...you''l hear a "pop" when the taper lets go and then its simply a matter of removing the tool and unthreading the bolt ....set the rotor aside and then there is just three bolts to remove the engine.