450 Blower Gearbox/Pulley Alignment?

[SyncroScott]

Hey folks! I've been lurking and absorbing all the great info on here for a while, hope to be able to contribute meaningfully some day, but for now I have a question I can't find the answer to here or in the manuals.

I've been getting the 450 blower I got for my 1811 all fixed up and ready for winter (if it ever comes) and I finally got it to the point where I could mount the belt. However, the blower gearbox pulley seems to be slightly misaligned along the lateral vertical plane (i.e. the front of the two idlers are slightly back from the gearbox pulley, either that or the gear box pulley is slightly too far ahead of the idlers).

Is this how it should be?

Since the gearbox is only mounted on both sides with a single bolt, it would seem that the whole thing could be either moved back slightly due to the elongated bracket holes, or angled a bit so the pulley is tipped more in line with the idlers.

I'd think tipping it would cause the impeller to be out of center relative to the housing, as well as mess up the alignment of the auger shaft. True?

Moving it back a bit might work without too much issue, since the impeller shaft is splined but success would be dependent on just how much movement fore and aft those elongated gearbox bracket hole would allow.

Any sage thoughts or advice? Thanks in advance!

[R Bedell]

Welcome to OCC........


Do you have the 190-450-100 Owner/Installation Manual ??

[SyncroScott]

Originally Posted by R Bedell

Do you have the 190-450-100 Owner/Installation Manual ??

Uhhh...you mean the manuals have their own part numbers?! LOL.

I found the manual online as the "Owner's manual" indicating it is for the 450 model blower. It has no date of publication but it does have a "form number" of 772-3852.

I'll take a look for the manual w/ the # you suggested. Thanks!

[finsruskw]

That is the number for the 450 blower assembly, not the manual

[R Bedell]

Since you are hung up on "form numbers", here is the one I have - 772-3926A

It is located in our Technical Library section - see: 450 Manual

[SyncroScott]

Originally Posted by R Bedell

Since you are hung up on "form numbers", here is the one I have - 772-3926A

It is located in our Technical Library section - see: 450 Manual

"Hung up"? To the contrary; I just thought perhaps you might be referring to a shop service manual that gave more detail than the owner's manual I do have (which is in fact for the 450) and until that moment I hadn't thought to see if the manuals themselves might have part numbers that I had overlooked. Like I said, I'm relatively new to CCs, but not born yesterday, new to mechanics, or garden tractors.

Now granted I don't have the exact same version of the manual as linked in the Tech Library, but I had already thoroughly read both and neither has any detail on my issue at hand.

Thanks for the help anyway.

[R Bedell]

To my knowledge, there are no Service Manuals for snowthrowers/snowblowers. Just Parts and Owners manuals, at least I have never seen any.

Ok, you are right. Wasn't thinking without my enough of my morning coffee. Instead of "hung up", maybe I should have said "focused in on".