I need to change the points and condensor on my MH200. Any tips/tricks on how to lock the crankshaft to stop the engine turning when removing the flywheel nut?

Also can someone confirm that the nut is reverse threaded? I've heard this but I'm not 100% sure.

Cheers!

it is left hand thread an impact gun would make life easier other wise you may have to put a screw driver through one of the holes in flywheel and find something solid on the inner case to hold it against ,, you will also need a puller to remove flywheel

Thanks for that.

I've got the puller. Might try and find someone with an impact gun. Air gun ratchet might work too?

air ratchets arnt all that powerfull needs to be a rotary type you can get 240v ones poss from machine mart ,, has to be refitted fair tight aswell or will break the woodruff key

you might get it with a hand held impact tool with a socket on the end

Done zillions of these and my advice is DO NOT "poke" anything through the flywheel holes! - you run the risk of slipping and damaging the stator windings, or low tension wiring on the backplate. If you're going to "jam" anything then either put the bike in top gear and "jam" the front sprocket by putting the chain round it, it's not ideal but you can get away sometimes with locking the back wheel OR I find the safest and best way is to use a "strap" type oil filter tool (large commercial type best) round the outside of the flywheel and bingo - it's a doddle. Of course as the earlier post states no locking is really needed with an air nut gun - you can simply hold it with your hand. Good luck!

Cheers for the help folks,

Anyone know if the bigger strap type oil filter tools are available from Halfords?

I use a luggage strap with the ratchet tightening mechanism. Strap is about 1" wide and I wrap it twice around the magneto then tie it off to the frame.

I use a luggage strap with the ratchet tightening mechanism. Strap is about 1" wide and I wrap it twice around the magneto then tie it off to the frame.

Like the idea of this! I've got one of these ratchet straps, I'll give it a try tomorrow and report back.

Here you can find a simple -but highly effective- tool for the magneto removal. It was made for a Cota 247, but the idea can also apply to your Mh 200.