Annoyed at Toro about Timemaster mower

[Donald]

I replaced the main drive pulley and shaft on my 20199 Toro Timemaster mower. Serial number starting with 313.

When I took it apart there was a flat washer under #31 a cup washer. The parts diagram did not list the flat washer.

When I put it back together with new pulley I did not use the flat washer. After a few hours of use the pulley is loose on the shaft even though there is a locknut and I used an impact to tighten.

I emailed Toro asking if there was an error in parts diagram. They emailed me back saying go talk to Toro dealer.

Looking at all the model numbers on parts tree.com, Toro has changed things a few times as to what holds that pulled in place.

Looks like models started off with a spring washer, then cup and then back to spring.

I ordered a new cup washer as the one I had not have an oval hole because it was loose.

So annoyed that Toro will not answer my question. Not sure a Toro dealer would know either. But someone at Toro knows.

Maybe I should go with a spring washer?

 

[chemman]

I suggest registering with this forum and asking them. A great group of OPE folk!

https://www.lawnmowerforum.com/

 

[FowVay]

I suppose it's possible that the flat washer was used as a shim to take up the excessive clearance. This is likely a manufacturing "in situ" adaption for when things just don't line up.

I'd reassemble your mower exactly as it came from the factory to avoid unnecessary wear. Parts diagrams aren't used as assembly diagrams in most situations but we all use them for that. You'd think there would be some sort of note or adendum to the diagram noting the possibility of things like this.

But as they say in the OPE industry... it's not going to the moon.

edit: is this the diagram? I notice that there's a superseded part number for the pulley so maybe there has been a running change in the assembly. Original P/N 120-3333 and new P/N 137-9176. This might cause the issue.

 

[Donald]

I will add it's a great well built mower. So not knocking the build of the mower.

 

[Nessism1]

Quite possibility, there was a running change during production, and the service engineering folks missed it and didn't get the parts diagrams updated.

 

[Donald]

I suppose it's possible that the flat washer was used as a shim to take up the excessive clearance. This is likely a manufacturing "in situ" adaption for when things just don't line up.

I'd reassemble your mower exactly as it came from the factory to avoid unnecessary wear. Parts diagrams aren't used as assembly diagrams in most situations but we all use them for that. You'd think there would be some sort of note or adendum to the diagram noting the possibility of things like this.

But as they say in the OPE industry... it's not going to the moon.

edit: is this the diagram? I notice that there's a superseded part number for the pulley so maybe there has been a running change in the assembly. Original P/N 120-3333 and new P/N 137-9176. This might cause the issue.

View attachment 305555

Look at part 7 and 31. The pulley stays the same across the various serial number groups.

Sometimes they use just #7. Sometimes just #31. Sometimes #7 and #31

 

[wag123]

So annoyed that Toro will not answer my question. Not sure a Toro dealer would know either. But someone at Toro knows.

Toro likely farms their phone support out to a 3rd party in some other country, like every other company in America does now days.

 

[FowVay]

I looked at the pulley coming off of the engine. I must have viewed the wrong component. Is your pulley one of the items on the deck? Do you have part numbers that you purchased?

 

[Donald]

I looked at the pulley coming off of the engine. I must have viewed the wrong component. Is your pulley one of the items on the deck? Do you have part numbers that you purchased?

Pulley is 120-3334. A pulley/flywheel.

 

[mk378]

Apparently a big problem with these is the spacer in between the two bearings in the spindle collapses, making everything loose.

 

[Donald]

Apparently a big problem with these is the spacer in between the two bearings in the spindle collapses, making everything loose.

That was replaced in June.

 

[mk378]

That was replaced in June.

yeah but how do you know the new one is still good?

 

[Donald]

So thinking about this some more, given that the pulley and shaft are the same part numbers as mine in the newest serial number group, not sure why I would not use only the spring washer since that is the way the newest serial number group holds that pulley tight.

 

[Donald]

I have a spring washer to hold the pulley in question. I assume the convex side should point up. That's the only way it makes sense.

I have not seen a spring washer used before when there was a locknut also. But this pulley take a real beating mostly when you engage the blade. Maybe disengage also as the friction brake kicks in.

 

[super20dan]

we pros call it the toro timewaister

 

[Donald]

we pros call it the toro timewaister

Will be is less of a Timewaster when I upgrade to a more powerful Kohler engine.