Mystery crank...

[husq2100]

Hey all,

found this NOS Husky crank in my boxes.

part on crank is 501 81 15-01, but I can’t find what it is? Best guess is 181 or 281???

cheers
Serg

 

[Huskvarna hotellgäst]

Looks like a 1982 181 crank with smaller bearing (73 82 202-25) on flywheel side, though the number for that is 50 18 109-01.

 

[Bob Hedgecutter]

Are you 100% it is a Husqvarna crank and not a Jonsered one?
Could be the crank from a 281 Husqvarna up to a 2095 Jonsered- 501 ## ##-## certainly shows up on Jonsered IPL's.

 

[Huskvarna hotellgäst]

It's not 281. They all have larger 73 82 203-25 bearing on both sides.

 

[Woodslasher]

I'll impart a bit of wisdom a boss told me, "The part numbers on the part and the part numbers given in the ipl don't always match up". In other words, you'll probably have to find out what this fits by seeing what this fits, not a p/n. The packaging looks like it's from the 2100 era, so early 181 crank sounds like a good guess.

 

[husq2100]

Looks like a 1982 181 crank with smaller bearing (73 82 202-25) on flywheel side, though the number for that is 50 18 109-01.

When you say smaller bearing, is that OD or ID? The CS appears to have same dia both sides at counter weights. I’ll check when I’m home?

 

[Huskvarna hotellgäst]

When you say smaller bearing, is that OD or ID? The CS appears to have same dia both sides at counter weights. I’ll check when I’m home?

You may be surprised

 

[husq2100]

You may be surprised View attachment 910605

yep, correct good sir

17mm on the PTO side, 15mm on the flywheel side.
So I guess that confirms 181?

 

[Huskvarna hotellgäst]

yep, correct good sir

17mm on the PTO side, 15mm on the flywheel side.
So I guess that confirms 181?

I think so. Limited market for those too.
The idea was to use the same crankshaft flywheel-side "nose" spec for the 181 as on the 266. This didn't last long as problems emerged and the crankcase & crankshaft were altered to use the larger 2100-size bearing on both sides.