9.6 Viking locked up, what's the damage?

[Dmknox98]

Went to go look at what appears to be a 9.6 hp Viking today. It's one of the ones made by Chrysler in 1970. Hard to tell with most of the motor painted over or scratched up but the tiller handle, cowl shape and badge on the front lines up.

The guy claimed it ran dry last time he used it, but his boat was damaged and he put the motor away for ten years, but the motor is completely locked up, flywheel won't budge even an inch. I'm guessing the power head or the lower unit is completely rusted out, but I'm not familiar enough yet to say for sure. Any tips or ideas? Any idea on how to source parts for a motor this uncommon?

PS attached a few pics I have if that helps at all

 

[Captain of the Double G's]

What I "found".
The 9.6 hp Viking outboard is a vintage two-stroke, twin-cylinder boat motor built by Chrysler for Eaton’s of Canada during the late 1960s and early 1970s. It shares mechanical similarities with Chrysler and Sea King models of the same era. [1, 2, 3, 4, 5]

Engine Specifications & Performance

• • Horsepower: 9.6 OBC certified brake HP at 4,750 RPM
  • Operating Range: 4,300 to 5,200 RPM
  • Type: Two-cycle, twin-cylinder engine
  • Years Produced: Circa 1968–1971 [1, 2]

Maintenance & Ownership Tips

• • Parts Availability: Finding components can be difficult because these motors are old and uncommon. Cross-referencing parts with vintage Chrysler-built outboards of the same period often helps. [1]
  • Water Pump Impeller: Servicing the lower unit requires disconnecting the shift rod (often via an access or reverse gear adjustment) before dropping the lower housing to access the water pump screws. [1]
  • Fuel Mix: As a vintage two-stroke engine, it requires a precise gas-to-oil pre-mix ratio (commonly 50:1 for late-era Chrysler designs, though verifying via an original manual is recommended). [1, 2]

(From Google AI)