Forzen WHeel Horse D180 Motor

[S416-8 398]

  I picked up a complete tractor only to find that the engine is seized. Now I have never had to work on one of these and looking for ideas. I did pull the heads, sprayed the pistons with SeaFoam penetrating oil, put the heads back on and letting it sit.. any oth

[702854boy 793]

Try pouring some marvel mystery oil in the cylinders 

[peter lena 9,893]

@ S-416-8   KROIL  IS KING   for  breaking down rust  , pricy , get a small  pourable bottle , like to  put that on a  working  unit , so the vibration and related use , draws it in , often leaves a rust stain , thats your  que to penetration , also use , rislone , zinc  oil additive , for related ring varnish , like a 10-30  valvoline , for added  cleaning , effects , none of my engines smoke , engine heat  and  varnish break down is what you want , do not  scream the hell out of it  , wake it up easily , also run this in on  a seperate  , gallon / more of heavily treated fresh fuel , drop / clean out carb fuel bowl , recovered a number of  engines , pete 

 

[Gasaholic 382]

10 hours ago, S416-8 said:

  I picked up a complete tractor only to find that the engine is seized. Now I have never had to work on one of these and looking for ideas. I did pull the heads, sprayed the pistons with SeaFoam penetrating oil, put the heads back on and letting it sit.. any oth

OK umm big question - ho do you know the engine is seized? Did you pull the motor and pop the blower shroud off the front and check for mouse nests or jammed starter or some debris fell down and jammed flywheel up against shroud? I've seen many such issues with engines mounted like that that came in deemed "junk for parts" that the person simply did not or could not be bothered to spend the time and effort to pull the engine and actually look ..... 

[ri702bill 12,167]

"One man's trash is....." sometimes another man's trash! Until it becomes a WH treasure...

[953 nut 66,244]

Have you attempted to rotate the engine backwards?  Could be one of the magnets from the flywheel came loose and is jammed against the stator.

[S416-8 398]

that I haven't done but will thanks.

[S416-8 398]

On 5/31/2026 at 10:56 AM, ri702bill said:

"One man's trash is....." sometimes another man's trash! Until it becomes a WH treasure...

well I ended up having to buy the D180 and a d160 and a snowblower just to get the 180.. 160 cranks has good compression and is a workable project,, the 180 well not clue yet.. not sure what to do with one of them,,

[peter lena 9,893]

@Gasaholic  found more often than not  that  VARNISH  IS WHAT  LOCKS UP AN ENGINE ?  its a reheatable liquor , while still in its pre  hardening stage , the hardening is what  locks up  / glues itself . would also , try a short  6 pt socket and long  1, 1/2"  pipe on to a breaker bar  , for a solid leverage advantage , personally think  KROIL  is the ultimate rust buster , $  but more than worth it , another thing about engine varnish , for years now been using adding rislone ZINC  , to every oil change , specs on bottle ,  every oil change , none of my engines smoke , and run with total ease , would also  use a 10-30  valvoline oil  for  enhanced , cleaning  / flushing  , wake up an engine slowly , SEPERATE  GALLON  of heavily treated fresh fuel , eliminate existing , hoses on tractor , thats another issue . brought back  frozen engines , more that worth a try . zinc breaks down varnish , my oil changes are like coal oil  , pete   

[953 nut 66,244]

I have shared this before.

I worked in a service station when I was in high school. We had a customer that was his own worst enemy; he was told by a relative that his engine was "varnished up" and that was the reason the lifters were clattering. Rather than coming to us to talk about it he went to the paint store and got a quart of Varnish Remover, do you have any idea how bad an engine smells after running it with that in the crank case! When we pulled the oil pan there was stringy stuff hanging from the oil pump pick-up and globs of gunk everywhere. I wish I had a picture to share with you. After we replaced the engine with a good used one we made him pledge that he would come ask us prior to doing dumb things like that again.