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aa335


Joined: Nov 29, 2008
Points: 2434

Honda HS621 Refresh
Original Message   Nov 20, 2010 11:48 pm
This is a Honda HS621 single stage snowblower.  It is at least 10 years old, I think more like 12 years old.  It had been in good service all these years.  However, most of these years it did not receive the TLC it should have gotten considering the caliber of this machine.  I thought it would only do justice it I to take on the task of making it look beautiful and fully functional again.

Things that were done in the last two years:
  1. Auger housing completely stripped down to bare metal.  Primed and painted in black gloss.
  2. Metal auger repainted also in black gloss
  3. New set of OEM rubber paddles and augers
  4. New OEM drive belt
  5. New scraper bar
  6. Replaced missing or rusted screws and various hardware
  7. Repainted red plastic top cover and side belt cover with Krylon Fusion red paint
Things to be competed shortly, parts on order:
  1. Replace wheels, washer, and cotter pin
  2. Replace springs on the chute ratchet
  3. Replace chute collar
  4. Affix new Honda and warning/caution labels
That should pretty much covers it to bring it to full showroom condition and operational specs.  Total costs of parts ~ $200, $30 in paint supplies, and several nights of work. 

And now here are a few pictures. 

















This message was modified Nov 21, 2010 by aa335
Replies: 9 - 18 of 36Next page of topicsPreviousNextNext page of topicsAllView as Outline
Underdog


Joined: Oct 18, 2008
Points: 332

Re: Honda HS621 Refresh
Reply #9   Nov 22, 2010 12:37 pm
I read the favorable reviews for this "appliance paint" on the amazon web site. But the paint says it is for inside use only.

Should that be a concern with a snowblower application?

http://www.amazon.com/Rust-Oleum-7887830-Appliance-12-Ounce-Stainless/dp/B0009XB3JU/ref=cm_cr_pr_product_top

"Rust-Oleum Specialty Appliance Epoxy is an ultra-hard, moisture resistance enamel that is specifically formulated for indoor
 metal surfaces. It provides a smooth, washable surface for refinishing the exterior of appliances such as refrigerators,
dishwashers, laundry machines, and other indoor metal applications (cabinets, tables).
Do not use on objects exposed to heat (stovetops, oven interiors, etc) "

aa335


Joined: Nov 29, 2008
Points: 2434

Re: Honda HS621 Refresh
Reply #10   Nov 22, 2010 1:59 pm
Underdog wrote:
I read the favorable reviews for this "appliance paint" on the amazon web site. But the paint says it is for inside use only.

Should that be a concern with a snowblower application?

http://www.amazon.com/Rust-Oleum-7887830-Appliance-12-Ounce-Stainless/dp/B0009XB3JU/ref=cm_cr_pr_product_top

"Rust-Oleum Specialty Appliance Epoxy is an ultra-hard, moisture resistance enamel that is specifically formulated for indoor
 metal surfaces. It provides a smooth, washable surface for refinishing the exterior of appliances such as refrigerators,
dishwashers, laundry machines, and other indoor metal applications (cabinets, tables).
Do not use on objects exposed to heat (stovetops, oven interiors, etc) "


I read the label and check the recommendation before using this paint.  It has the properties that I was looking for, "ultra-hard and moisture resistance".  It is hard, smooth, and slippery, perfect for a snowblower bucket.  There wasn't anything else I could find that was reasonable in price and available in a rattle can.  So I took a chance and used it against the recommendation. 

Reading between the lines, I'm interpreting that the paint was not formulated for thermal expansion of the substrate at elevated temperatures (ie chipping and cracks) and/or resistance against breakdown from the sun's UV radiation being stored outside.  Or that it has not been thoroughly tested for outdoor applications.  Neither of these conditions are applicable to my snowblower.  Operating / storage temperatures are 0-100 Fahrenheit with minimal and non-continuous UV exposure.

I will report back how the paint holds up after several years. 

Use it at your own risk, YMMV.  The worse it could happen is that chips and cracks may develop.  You have to strip it down and repaint it.  But it's no worse than any other paint that is on there or rusting exposed metal.
This message was modified Nov 22, 2010 by aa335
Underdog


Joined: Oct 18, 2008
Points: 332

Re: Honda HS621 Refresh
Reply #11   Nov 22, 2010 2:53 pm
aa335 wrote:
I know it's kind of crazy, but been thinking about removing the GX160 and transplanting a GX200.  Direct bolt-in to the frame, a little bit of work matching up output shafts to pulley though.  There are GX200 clones available for cheap.  Maybe I'll put the GX200 on a second 621 donor frame.  I hate to butcher up this one though.

I have been contemplating the GX200 transplant on this machine as well. I put a clone GX200 on a Honda HS520 and I was quite impressed with the end result.  So are there differences in the output shafts (GX160 vs. GX200) that would come into play?

This message was modified Nov 22, 2010 by Underdog


Underdog


Joined: Oct 18, 2008
Points: 332

Re: Honda HS621 Refresh
Reply #12   Nov 22, 2010 2:59 pm
aa335 wrote:
I'm also thinking about picking up a Honda HS35 for a restoration project.  She's really old and replacement parts are rare and really expensive.  I mean really expensive!  The HS35 is really well built and makes every new single stage snowblower look like toys.  Just the chute crank alone looks tougher than half of the snow equipment at Home Depot.

I would agree that the HS35 is a beautiful piece of engineering (sans clutch).  http://www.youtube.com/watch?v=QGUq5huKGiE

aa335


Joined: Nov 29, 2008
Points: 2434

Re: Honda HS621 Refresh
Reply #13   Nov 22, 2010 3:03 pm
Underdog wrote:
I have been contemplating the GX200 transplant on this machine as well. I put a clone GX200 on a Honda HS520 and I was quite impressed with the end result.  So are there differences in the output shafts (GX160 vs. GX200) that would come into play?

The GX200 is basically a GX160 engine block with longer stroke.  All the engine mount holes are the same.

The GX160 engine that is in the snowblower has a different shaft than a GX160 / GX200 that you buy off the shelf.  Can't remember the detail now.
This message was modified Nov 22, 2010 by aa335
alty


Joined: Nov 1, 2010
Points: 38

Re: Honda HS621 Refresh
Reply #14   Nov 22, 2010 3:58 pm
Nice overhaul!  Beautiful!    It's a shame Honda (and many) are offering lesser, more economical engines and parts in their present snowblowers.

If Honda offered the HS621 motor in their HS520 model  - I'd buy it in a second.

aa335


Joined: Nov 29, 2008
Points: 2434

Re: Honda HS621 Refresh
Reply #15   Nov 22, 2010 4:16 pm
Underdog wrote:
I would agree that the HS35 is a beautiful piece of engineering (sans clutch).  http://www.youtube.com/watch?v=QGUq5huKGiE

The HS35 was Honda's first foray into the US market and it eclipses all single stage snowblower, IMO.  The majority of that beautiful engineering is hidden under the plastic top cover that most people will never see.  The engine mount, wheel mounts, handle mounts, and auger housing is one welded piece.  It is more of an automobile unibody  / space frame than a snowblower.

Check out this diagram and you'll see what I mean.  See item #4.

Auger housing.

It has control knobs on the console that is more fitting on an automobile than a snowblower.

Here is a longer video showing how well it handles the heavy stuff.  It doesn't throw very far, but the throughput and the pace at which it moves is quite impressive for a 3.5 hp engine.

HS35 Video
This message was modified Nov 22, 2010 by aa335
Underdog


Joined: Oct 18, 2008
Points: 332

Re: Honda HS621 Refresh
Reply #16   Nov 22, 2010 5:23 pm
Hard to believe they could engineer this.  I never really looked that closely at the "chasis". I have heard that there is a clutch
that eventually goes on this machine and that this part is impossible to find. These blowers show up on CL
frequently for $70 to $80 in various condition.  Given their age, most are in pretty sad shape. 

This message was modified Nov 22, 2010 by Underdog


chefwong


Joined: Dec 18, 2004
Points: 175

Re: Honda HS621 Refresh
Reply #17   Nov 22, 2010 5:55 pm
U boys got me hungry for mooor power. 24" footprint with a GX270 doable ?

Underdog - was you mod done in a fashion with the cover back on ?
That's the only nuisance I see when doing mods like this....is keeping it looking *OEM*....
Underdog


Joined: Oct 18, 2008
Points: 332

Re: Honda HS621 Refresh
Reply #18   Nov 22, 2010 6:39 pm
chefwong wrote:
U boys got me hungry for mooor power. 24" footprint with a GX270 doable ?

Underdog - was you mod done in a fashion with the cover back on ?
That's the only nuisance I see when doing mods like this....is keeping it looking *OEM*....

The extra power in a small footprint is a nice balance. Any more and I think the frame would start to flex too much.
That and the fact that a single stage is supposed to be light and easy to push and pull around.  Which "24 inch footprint"
machine were you contemplating?
I was never successful in keeping the OEM "look."  I needed an extention for the exhaust/muffler
but I just resigned myself to the fact that I was not going to ever be able to resell it. Because of the narrower
width it will easily keep up with anything (as long as it is not frozen ice).  I liked the power/width radio of the
HS-80 over the HS-928, the 4" smaller bucket was better for that hp (in my opinion).  aa335's 621 is a
much more elegant design.  There are side by side comparisons of three single stage machines (including toro) 
somewhere on the net and the 621 wins hands down in heavy snow. 

This message was modified Nov 22, 2010 by Underdog


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