288XP CRANKSHAFT HELP

[ELECT6845]

Installing new bearing and crankshaft in a 288. The bad crank was a 501 81 49-01 replacing it with a 501 81 61-02 which is out of a 394. Suppose to work but the crank weights are hitting the bottom and locking the crank. Anyone know if there is a difference? Early model saws vs. late model saws?

 

[RIDE-RED 350r]

Wish I could tell you, I'm surprised to hear this.

Subscribed to be educated my own self!

 

[ELECT6845]

Cases will go together but the crank will not turn. I even relieved the cases a small amount and it still is hitting.

 

[RIDE-RED 350r]

Paging @srcarr52 can you shed any light on this??

 

[jacob j.]

I know some of the later 394 cranks have a line that runs down the middle of the crank throws that protrudes slightly. I'm not sure if it was by design or a casting issue.

I can send you a regular 288 crank.

 

[ELECT6845]

I would appreciate that jj

 

[Warped5]

IIRC, the early 394 cranks will swap cleanly into a 288.

... if you have a later 394 crank, not so much so.

 

[ELECT6845]

IIRC, the early 394 cranks will swap cleanly into a 288.

... if you have a later 394 crank, not so much so.

That must be the issue. Thanks for the reply

 

[Warped5]

Any time, Joe ...

Up to 01/1996 it was part number 501 81 49-01.

After that, it was 501 81 49-02.

 

[ELECT6845]

Any time, Joe ...

Up to 01/1996 it was part number 501 81 49-01.

After that, it was 501 81 49-02.

10-4 I knew someone would know.
Thanks

 

[XP_Slinger]

I was under the impression that the 288 and 394 cranks were the same throughout. Learn something every day on here.

Glad you got it sorted out.

 

[srcarr52]

Maybe the counterweights on the 394 crankshaft are a little larger for the heavier 2mm larger diameter piston of the 394.

 

[sawracr]

Sounds like bearings are binding, take a dead blow hammer and rap on both crank ends until crank frees up.

 

[Mattyo]

This is very interesting....never knew version 2 was that different.