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Snapper 21 BBC Rehab complete! see pics

Posted by quickrick East coast USA (My Page) on
Sat, Mar 10, 07 at 19:44

Guys,
Finally after much effort I finished the Snapper mower redo. It is a 1990 21404P /self propelled blade brake clutch model that I redid this winter. What made it tough was the availability of the clutch on the blade side (dead man control allows engine idle). Pete's Small Engine/LawnmowerStuff.com made the whole thing possible in so many ways! These are helpful project guys who know their engines and mowers.
I replaced most all moving/wearing parts and even repainted it. I bought an OHV 6hp Tecumseh off of Ebay and cut and retapped the shaft. There were quite a few differences between the 4 hp Max Briggs motor and this Tecumseh even in mounting it. The key ways were different and that created some difficulty that required some engineering changes. I'd thought engines were mostly universal but this really wasn't the case with this project.
I'm pleased with the results..check out the pics and tell me what you think of my 17 year old Snapper. You wouldn't let me junk it........so I rebuilt it! See pics 1, 4, 7 and 1 especially. QuickRick p.s. want an old running 4 hp Briggs for free?

Here is a link that might be useful: Snapper project completed


Follow-Up Postings:

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RE: Snapper 21 BBC Rehab complete! see pics

Nicely done.
You may take some flak from some but I like your choice of steel drive wheels and plastic up front. To me that is the better combination. Don't forget to grease the axle shaft for the drivers so they don't get stuck.

If mine I would switch to the "Z" fold bag and the blade with the bolt on extension wings.


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RE: Snapper 21 BBC Rehab complete! see pics

Wow. If it mows as good as it looks, it ought to be one of the most satisfying projects ever. Very santitary engine transplant


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RE: Snapper 21 BBC Rehab complete! see pics

Wow! Great job. I love the old 'vortex' decks - I had a Homelite/Jacobsen with a similar deck - they really vacuum the clippings/leaves.

Here is a link that might be useful: Homelite/Jacobsen 20


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RE: Snapper 21 BBC Rehab complete! see pics

still waiting to get my new 6hp ohv tech engine. i hope its as powerfull as the old one . it was very powerfull but was seriously abused by its former owner . i hope the new one holds up better. the timming gear failed in mine. i wouldnt have bothered to reinstall the bbc unit as its something else to go wrong but my hat is off to you for going the extra mile.


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RE: Snapper 21 BBC Rehab complete! see pics

Guys,
Thanks for the kind words! I always liked this mower except for the weak HP rating (4hp now 6hp)and the parts pricing. Nevada, I used the plastic front wheels because they were light and cheap. I'm using bushing bearings in the wheels coated with anti-seeze compound. The fronts have very little work to do and the metal bearing wheels weigh a ton! This mower already weighs a lot and I didn't want to make it worse. I need to know more of the bag and blade upgrades that are available for this mower to improve it's already great vacuuming performance.
I really wanted the blade brake feature and my plan was to buy a new Toro 20056 aluminum deck mower with it if I couldn't locate the blade clutch. Pete's fixed me up and I wonder if I should buy a spare from the only source that I've ever found for those?
The final compliment came from my neighbor who came with two beers to chat and remarked that I had a new mower!lol!
The Tecumseh is getting quieter all the time and starts almost as well as did the old Briggs motor. This motor has quite a strong kickback, so you have to pull it with "authority" in order to prevent that. Tecumsehs are different animals and I'm hoping that it lasts a long time. I have already changed the oil once and we are off to a good start hopefully. QuickRick


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RE: Snapper 21 BBC Rehab complete! see pics

Any of you guys that are Snapper experts please tell me all you know of the best blades availaible and what they do better(Ninja?). Also, fill me in on any advances in catch bags and are those genuine Snapper made?
Soon I'll get to try this thing out and I expect that it will do a great job, heck it did before with a worn mediocre motor! QuickRick


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RE: Snapper 21 BBC Rehab complete! see pics

I placed more older "During pictures on the picture link----will be interesting!


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RE: Snapper 21 BBC Rehab complete! see pics

The "Z" fold bag is easier to use. The bolt on blade "wings" increase the suction but at a considerable horsepower cost. Not worth it in my opinion. They are one of the best baggers in stock form anyway. I took my blade wing extensions off after two tries on different Snappers.


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RE: Snapper 21 BBC Rehab complete! see pics

My wife had this model mower at her old house; I have now "sort of inherited" it. Since you have taken yours completely apart, maybe you can give me some guidance.
When I start mine, it runs for a few secs. and then dies. After taking it apart and draining the gas tank, it appears that there is a screen of some sort in side the tank, at the outlet. I believe that this is partially clogged and is starving the engine of fuel. However, I can find zero information on the fuel system or any fuel filters / screens (in either theUser Manual OR the Service Manual), much less how to replace whatever there is. Can you help?


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RE: Snapper 21 BBC Rehab complete! see pics

gl,

If your carb has a bowl on the bottom, you may be able to get it off and, once inside, remove the main jet inside. Carb cleaner spray and a pin may clear it for you. If not see the following which is 100%.

The best thing to do is to see if you can determine the model and serial number to the Briggs motor. I'd go buy a new carb for it OR..........take it off and disassemble it. You see, it has sat for so long that the tiny jets and orifices are all clogged. (it is a Briggs isn't it?)

If the thing ran well and cut well before, it is worth the effort/expense.

Go to Briggs and Stratton website if you need help locating the model and serial number.

Pain in the neck, yes, it is why everyone preaches about storing equipment dry after season's end.

QuickRick


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RE: Snapper 21 BBC Rehab complete! see pics

Guys,

To those of you that don't know me, I am constantly upgrading.

The Tecumseh motor was a real disappointment. A low tech commercial Briggs would have been a better choice in hindsight.

Last year I replaced the motor with a Briggs OHV commercial type. There wasn't much right with the old motor. It leaked, burned lots of oil, things fractured and cracked and the carb literally wore out. Other Tecumsehs that I had were just fine but this motor was total junk.

QR


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