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So far this tractor has been amazing. We are in the middle of a major snowstorm in the Northeast as I write this. Bring it on.
For anyone familiar I have to say that the instruction manual for the snowblower is extremely well written and clear. Except for more of a better description of how to lube the two (2) drive chains (one for the auger, one for the blower). I could not find a decent youtube video but when I do figure this out I'll make and post one myself.
Also, I have two (2) different types of shear pins but I can only find one pictured in the parts explosion.

Two of the most mundane regular items but the manual falls short on the easy stuff.

Any insight I'd appreciate it.

Mike Wex

The parts catalog I has shows two sizes of shear pins:

5 x .8 x 40, part number 90124-771-S00 (reference callout #13) connects shear plate to sprocket
5 x .8 x 45, part number 90125-771-S00 (reference callout #16) connects shear plate to driven shaft

90124 is 40mm long, and 90125 is 45mm long:


I'll confess, I wrote that manual:redface:, but it's been 20+ years since I've seen one of these units in the flesh, and just don't recall how to best access the chains for lubrication. Are they fully enclosed/protected? If any part of the chain or sprocket is visible, you could always spray some on, engage the unit briefly, let it stop, then repeat a few times. Obviously, avoid getting any spray on or near the belt or belt pulleys.

robert@honda said:

The parts catalog I has shows two sizes of shear pins:

5 x .8 x 40, part number 90124-771-S00 (reference callout #13) connects shear plate to sprocket
5 x .8 x 45, part number 90125-771-S00 (reference callout #16) connects shear plate to driven shaft

90124 is 40mm long, and 90125 is 45mm long:

I'll confess, I wrote that manual:redface:, but it's been 20+ years since I've seen one of these units in the flesh, and just don't recall how to best access the chains for lubrication. Are they fully enclosed/protected? If any part of the chain or sprocket is visible, you could always spray some on, engage the unit briefly, let it stop, then repeat a few times. Obviously, avoid getting any spray on or near the belt or belt pulleys.

Click to expand...

Thanks Robert,

WOW, the guy that wrote the manual, I'm impressed. As I said about the manual, it's clear and concise. I did see shear pin #13 but I guess in the illustration the second shear pin #16 I did not see. They are (as you can see) very close in proximity whether viewing the parts explosion in the paper manual or on DVD. Thanks for pointing it out.

On the lubing of the two chains I have been able to use spray oil on the larger one but the smaller one is difficult to get to. Can't get to the smaller sprocket at all. I think I have to remove a bolt and washer to open up the chamber where I can gain access to both the chains (small and large) as well as both sprockets. Maybe it is so obvious that getting to this area was left out intentionally?

The manual suggests that you lube chains and sprockets after every 2 hours of use with Chain Saw oil. I certainly did 2+ hours of blowing this morning with the snowstorm we had last night. It'll be close to 40 degrees on Sunday (it's 9 degrees now) so I'll have a chance to poke around and find out how to properly lube them. With all the advanced engineering Honda put in these machines I'm surprised they did not have some sort of oil reservoir as part of the package like a regular chain-saw has. Whatever... it is an amazing machine and throws snow like nothing else I have ever seen in such a small package and non-commercial/industrial. The guys clearing the streets (they didn't have to do my street/dead-end, I did it) working for DPW had to stop their truck and plow to watch me for awhile. Looks like too much fun.

Mike Wex

stagewex said:

Thanks Robert,

With all the advanced engineering Honda put in these machines I'm surprised they did not have some sort of oil reservoir as part of the package like a regular chain-saw has. Whatever... it is an amazing machine and throws snow like nothing else I have ever seen in such a small package

Click to expand...

As was often the case, many of the snowblowers built for Honda tractors were made by third-party firms. I recall the SB2040 was made by RAD, an outfit in Canada, who had a good track record making attachments for Honda. Spendy, but nicely made. Pretty sure they are still in business, maybe under another name these days.

I think the 2-hour lubrication interval is conservative; you can probably go longer, just don't let it get really dry or rusty for best results.

Finally, if you'll drop me a PM with you email address, I can send you a .PDF of the parts catalog if that will help.

That is great that Honda lets you help folks online... most companies view the internet as taboo. It is actually pretty good idea to be helping your customers, well
the dealers can ask here too.....