Flywheel A409000210

1. Removed cover
2. Removed spark plug
3. Stuffed rope in cylinder
4.Removed blower wheel
5. Removed flywheel and vacuumed metal chips from inside
4. Applied locktite to crankshaft threads
5. Reassembled unit with new flywheel
6. Removed rope from cylinder
7. Replaced spark plug

1. Used replacement parts videos as a check-list go-by. Had previously replaced the carburetor and gaskets but blower would not start. Confirmed procedure to ensure there was a spark. Three things required for an engine to run: fuel, air and spark. Air was no problem - had air filter off to fully allow air into cylinder. Fuel was not a problem - unit either hydro-lock (too much fuel when pulling start cord because engine would not start) or fuel visibly in engine when plug out and pulled on start cord. Followed procedure to check spark. Spark was present.
2. Reviewed ereplacement parts video for other sources of failure to start. Found video re: flywheel and flywheel key. Removed flywheel to check for flywheel key and determined it had been sheared off. (The key sets the timing of the spark, so that magneto fires when piston at appropriate degree from top dead center). If timing is off, engine will not run even with air, fuel and spark.
3. Replaced flywheel with replacement unit from ereplacement parts. Also ordered new gaskets (eventually only used one) and new air filter although had replaced those when replaced carburetor.
4. In retrospect, probably did not need to replace carburetor since the failure to run now appears to have been a timing issue.
That said,
1. Disconnect spark wire. Remove spark plug (requires spark plug socket or appropriate size wrench).
2. Remove screws holding engine cover and fan covers.
3. Remove blow tubes.
4. Remove engine cover and fan cover.
5. Remove throttle rod.
6. ereplacement parts video says to stuff cord into cylinder to prevent piston movement. I jury-rigged a cord from string -- not sure it was effective but had no issues.
7. Remove flywheel. Confirm flywheel key sheared off. I though the key was a separate piece but it is a small tab on the inside of the flywheel that fits into a slot on the engine crankshaft. Replace with new flywheel.
8. Reassemble. Note that at the throttle rod and ground wire for run/stop switch fit inside engine cover as reassembling.
9. Replace spark plug. Wipe spark plug anti-seize on threads of plug before installing. Hand tighten and then slightly more torque to seat.
10. Follow starting procedure. May have to pull start rope numerous times (more than you think necessary!). In my case, it took a number of pulls to get the engine to start. (Actually stopped working on unit for a while to "walk-thru" check-list of repairs to think about why this unit won't start. Concluded it needed more effort). Used shorter pulls more quickly, engine caught, then stopped several times, but finally turned over and ran.
11. Enjoy having fixed a blower - saving purchase price of new unit and saving a good piece of equipment.

Followed instructions for replacing the Flywheel on a You Tube Video.

1. remove engine from trimmer shaft
2. remove all outer housing
3.remove fuel tank
4.carefully remove, starter assembly from crankshaft, and also Clutch assembly, as it is the part that holds the Flywheel on,, "BOTH ARE RIGHT HAND TREADS"
5. Remove Flywheel
Note..... Be careful not to strip threads on starter assembly,, Very thin metal where threads are.
When reattaching the starter assembly and the clutch assembly, do not over tighten, as running the trimmer will keep it tight?
6. reverse procedure to assemble.

1. Removed spark plug
2. Removed right side of blower case
3. Removed left side of case that covers the blower fan
4. Removed the blower fan
(hold the crankshaft from turning on the opposite side with a wrench or tool to keep it from turning. Be sure not to damage that end because the recoil rope unit fits on it). Note: the bolt that holds the fan on is a standard bold, not reverse threads.
5. Remove the left side of the blower case
6. The flywheel can now be pulled off the shaft
Install unit in reverse order
Install in reverse

This 2 cycle backpack blower had all the elements to fire but refused to start. Spark out of time. Sheared flywheel keyway. Requires complete tear down of outer plastic as well as removal of fan until flywheel was reached. Best advice take one thing off at at time with all corresponding bolts set aside with each piece. Flywheel was removed by first inserting some clothesline rope into spark plug hole to keep piston from moving. Next the flywheel was removed counterclockwise, unscrewed from the crankshaft. Simply take the new flywheel align the key ways and be sure to tighten down the nut that holds it very very snug. I used blue loctite to prevent loosening. Reassemble in reverse order of take down. Machine fired right up and runs like it always did. Not a difficult repair just a bit time consuming due to disassembly and reassembly of all the outer covers and parts.

Took the Echo blower apart and replaced the flywheel but used Locktite to insure that the nut
on the flywheel would stay tight.
The blower works great now.
Now I have another blower to fix, Husqvarna