Anyone ever worked on a Husqvarna Royal 43S?

Paxman

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Hey guys!

I got fast and good help in another thread about a B & S engine question, so I figured I'll throw in a question about a weird mower that was given to me for free. It's a Husqvarna Royal 43S and it's not like any mower I ever seen before. The chassis is all plastic and it looks like a boat!

The problem I'm having is the knife holder underneath. I can't for the life of me figure out how to get it the damn thing off. It's attached to a fan wheel that sits on the engine shaft. Since everything is plastic I don't dare to use much force. Also I'd like to save the fan disc if I can.

IMG_3514.JPGIMG_3515.JPG

The machine seems to be in good condition otherwise with a real nice engine so it would be a shame if this plastic thingy would stop me from getting it running and sold. Worst case I'll just hack it off and save the engine for some other machine and dump the rest of the boat! :D

Any thoughts?

Thanks in advance!
/Fred
 

Rivets

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It’s been many years, but if my memory is any good that part is just pressed onto the shaft. I would spay it liberally with penetrating oil and let stand for a few days, keeping it wet. should pop off with a bit of upward pressure. Have you checked the engine numbers to figure out what type of end you have on the crankshaft. This will tell you how it is mounted.
 

Paxman

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Thanks for the answer Rivets!

When you say "upward" pressure...don't you mean downwards? Engine number is 12S802-1124-01 and the parts manual only shows that it's an ordinary keyed end:
Skärmavbild 2020-06-17 kl. 16.07.24.JPG

Parts manual for the Husqvarna shows:

Skärmavbild 2020-06-17 kl. 16.09.38.JPG

I wonder if I can use a slide hammer somehow connected to the bolt for the knife and pull everything in the last picture down...I'm guessing that the fan wheel and the holder is pressed on the part labeled "NB" in the picture which in turn is connected to the crank shaft?
 

Rivets

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Up, down, I thought you had the engine off. Part NB musts slides on the shaft using a woodruff key, not square key to hold it in place and prevent spinning. As I said drenching with oil for a day or two should help you break it loose. Insert the bolt until almost tight and tap on the bolt while prying. If you have an assistant, put you pry bars 180 degrees apart, pry and tap gently. With patience you should be able to pop it loose.
 

Paxman

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The (stupid) thing is that you can't take the engine off with the fan disc and blade holder in place. The engine bolts threads from bottom up and are hidden under the disc. This machine is really weird.

I sprayed a lot of WD40 a few days ago and are working on other machines. I'll get back to the Royal when they are done. I'm not really sure if it's worth the effort tough...don't think this machine is that desirable since it's so strange.
 
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Compact7

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Another method might be to use a pull start cord or two as pulling loops. Loop it between deck and pulley with enough extra length on both sides to grab onto. Favor pulling on one side then the other held with each hand to "walk" it off.

But I wanna see the boat! Could be fun in the July 4th parade or boating around the tractor show wearing your Captain's hat. Or bandana and pirate's eye patch. 🏴‍☠️ Edit: Aw shucks, it's self-propelled. I thought it was a rider.
 

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Paxman

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😛

This project is on back burner for now...but I'll report back if/when there is any progress. (y)
 
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