Belarus 250as Engine appears seized

   / Belarus 250as Engine appears seized #1  

bobtriump

New member
Joined
Aug 31, 2013
Messages
1
Location
stormville, ny
Tractor
BELARUS 250AS
I have a 1985 Belarus 250as. It has been sitting for over a year and when I went to start it the Engine wouldn't turn over. It was running perfectly fine the last time I used it over a year ago. After pulling out the starter which is good I tried turning the engine over with a 3/4 breaker bar on the front bolt of the crank and a breaker bar on the flywheel, but no good. Next, I removed the injectors and put Marvel mystery oil down into the cylinders along with Kerosine, but again no good. I also have the decompression bar pulled out. Does anyone have any ideas on how to get around this problem. Are there additional things that I could check? Any ideas would be greatly appreciated.
 
   / Belarus 250as Engine appears seized #2  
Let it set a few weeks and try it from time to time. If it works it is easier than a rebuild.
 
   / Belarus 250as Engine appears seized #3  
Agree with Ed. Also I favor the ring gear for trying to turn it, rather than take a chance on twisting off the crank nut. Patience may save you some dough here.
Jim
 
   / Belarus 250as Engine appears seized #4  
Remove the injectors and fill the cylinders with DOT 4 brake fluid and let it set for a couple weeks or more. then pull it with the injectos out. Pull it and blow all the brake fluid out then reinstall injectors and start it.
DOT 4 is the best to remove rust and carbon. Remember to check and refill the cylinders with brake fluid. It must soak past the rings in order to unstick the motor. Change oil before operating engine.
 
Last edited:
   / Belarus 250as Engine appears seized #5  
Remember to be careful, I got my eyes full of gas-oil mix doing the same thing to an old tiller. Guess where my face was when it broke loose.:shocked: It had a lot more pressure than I expected.
 

Tractor & Equipment Auctions

2021 FORD F-150XL CREW CAB TRUCK (A51406)
2021 FORD F-150XL...
2011 MAMMOTH UTILITY (A50854)
2011 MAMMOTH...
CATERPILLAR 259D3 SKID STEER (A50458)
CATERPILLAR 259D3...
2021 Exmark 60in Zero Turn Mower (A49461)
2021 Exmark 60in...
NEVER USED FECON 74in Deck Mulcher FDM74 (A51039)
NEVER USED FECON...
48in Forks Loader Attachment (A49346)
48in Forks Loader...
 
Top