Wisconsin Robin W1-185 Parts Guide + Info

Hello guys, I recently bought a scrap Wisconsin Robin / Subaru Robin motor, it had no carb, or airbox, and was missing a few things here and there such as bolts, nuts, etc.
 
After hours and hours of research on this engine, and trying to find any parts (hint, there aren't any). I decided to share my research here to save the future Wisconsin Robin owners time and money.
 
The motor I will discuss is the Wisconsin Robin W1-185, or the rebranded Subaru Robin RY-20.
They both share 75% of the same parts and are rebadges of each other.
 
The first issue was the nonexistent carburetor or nuts. I brought the carburetor linked below as the original carb is not made anymore. 




 
Original Carburetor Parts Number: 227-62333-00
Original Nut Parts Number: 002-38060-00
 
All the nuts are the same, but I included 3 links to purchase the one that gives you the cheapest delivery fees. 
 
Next, the airbox was missing as well, so I had to dig online for a complete kit/replacement. Linked below is the cheapest and closest OEM airbox assembly I could find.

 
Original AirBox Parts Number: 227-32603-00
 
Next, the bolts that were held in the front cover and the recoil were missing. I had to search for hours for the bolts and even found some cheaper ones. 
I will also drop the bolt specifications if you wanna try to find it in a local hardware store:
1/4"-28x 1/2" (Fine Threads)
 





 
Original Bolt Parts Number: 011-00600-30
 
Next, the fuel tank has 2 studs at the bottom that need nuts to hold it to the block. These nuts are the same ones used for the carburetor.



 
Original Nut Parts Number: 002-38060-00
 
All the nuts are the same, but I included 3 links to purchase the one that gives you the cheapest delivery fees. 
 
Next, thought I would include the NGK Iridium sparkplug replacement. 

 
NGK 3419 / BR6HIX 
 
Finally, in parts, I linked below the oil I used in my motor (10W-30)

 
That's all I have for parts. I will include diagrams and general engine information below.
 
General Engine Information:
Type Air-cooled, 4-cycle, upright single cylinder, side, valve, horizontal PTO shaft

Bore x Stroke

mm(in.) 67x 52( 2.64 x 2.05 )

Piston displacement

cc(cu.in.) 183( 11.17 )

Continuous output

kW(HP)/rpm 2.2(3.0)/3000

2.6(3.5)/3600

Maximum output

kW(HP)/rpm 3.7(5.0)/4000

Maximum torque

N・m(kgf・m)/rpm(lbf・ft/rpm) 9.3(0.95)/2800,

(6.87/2800)

The direction of rotation Counterclockwise as viewed from the PTO shaft side

Fuel Automobile(unleaded)gasoline

Fuel Tank capacity

liter(US gal.) 3.8(1.00)

Lubricant Engine oil SAE 10W-30, 20W, 30W

Lubrication Mechanical splash type

Lubricating oil capacity

liter(US gal.) 0.6(0.156)

Carburetor Float type

Starter Recoil starter

ignition system Transistorized

Governor Centrifugal flyweight type

Dry weight

kg(lb) 15.2(33.52)

Dimension

length x width x height

mm(in.) 303x326x392

(11.93x12.83x15.43)
 

 


 
Good luck with your project with your Wisconsin Robin / Subaru Robin motor. If you have any questions ill try to help to the best of my abilities.