Mantis SV-2AE Tiller

[ggoyeneche]

I've got an older Mantis SV-2AE with the early ECHO/Kioritz engine. This is the engine which was originally breaker point ignition, but this one has the later CDI module mounted externally.

Anyway, I need to remove the centrifugal clutch. I've already gotten the Rotating Drum (17501004632) and the two Clutch Shoes & Springs (17500905130 & 17501805130) off, but not sure how to remove the part where the Shoes & Springs mount to. Is it part of the Cooling Fan (10150005020)? How do I remove from the Crankshaft? Is it pressed on over a woodruff, or is it threaded to the crank?

Any insight would be appreciated.

[KE4AVB]

I take the bearing came off with the drum. If so the next main item is the fan to remove. Yes it is on a straight keyed PTO end of the crankshaft.

https://www.partstree.com/models/sv-2ae-little-wonder-engine/engine-crankcase-stop-switch-ignition-starter-1/

[ggoyeneche]

Thanks for the feedback. I can see a slot in the hub for the keyway, but still don't know how to pull it off. I can't get under the fan to use a puller, or even pry it up. And there is not way to get purchase on the hub (such as tapped holes).

[bgsengine]

Echo also has a flywheel puller that threads onto crank, you hold the engine off the bench by the puller handle and whack on the tool with a hammer...flywheel pops off after a couple whacks...
If you are very careful to protect the crankshaft and threads, same can be done with a soft face hammer and hold engine by the flywheel off the bench , whack crank to pop flywheel loose (but be advised, if you hit it wrong, can damage the crankshaft or threads)

[ggoyeneche]

Thank you to both of you. Was able to remove the Fan/Clutch hub successfully. It was in fact keyed to the crankshaft, and I was able to pull it off by prying under the fan and tapping on the Allen head screw holding the clutch together. Since I was striking the Allen screw I did not damage the crankshaft. Once it began to move I applied some PB Blaster and let it soak. Now moved more easily, and was able to pull off with my fingers.

Thanks again KE4AVB and bgsengine.