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[tom2p 2,394]

curious and baffled that someone was able to break / dismantle two of the more durable mechanical systems designed ... Wheel Horse attach matic and the PTO ...

 

smh

 

can anyone comment on the performance / durability of the Kohler OHV singles vs the older Magnum or K's ?

 

[George Levett 0]

On 8/12/2021 at 12:41 PM, tom2p said:

curious and baffled that someone was able to break / dismantle two of the more durable mechanical systems designed ... Wheel Horse attach matic and the PTO ...

 

smh

 

can anyone comment on the performance / durability of the Kohler OHV singles vs the older Magnum or K's ?

 

Always found the K series Engines very sound & long lasting however the OHV engines aren’t so good due to being more sophisticated and lightweight,they have no history like the former engines, how many have we seen of the OHV alloy engines advertised for spares/ repair from small rotary mowers etc??

[George Levett 0]

Thanks I appreciate that your response will be interesting, George 

[Fordiesel69 263]

George,

 

All modern forums have a feature that will show related posts, and with that feature comes confusion as some of the posts shown can have an older date that goes un-noticed.  This is a 2021 thread!

 

In any event, not a fan of electric PTO's, and I have personally seen a higher instance of failure not only with the PTO electric field and related wiring, but also the charging rectifier.  It uses a good 5 ~ 15 amps to operate depending on the engine size.  

 

Now onto the kohler K Series / Magnum vs. Command Pro OHV:

-K Series engines are great, and have been around for a long time, and often when you come across one, it has been rebuilt or in need of being rebuilt due to age and wear.

-Magnums are even better as they loose the battery ignition system, and seem to run ever so slightly smoother with the magneto style ignition.  Also the timing never goes out of whack and is set from factory.

-Both of the older k series and magnum have splash lubrication and make a lot of metal, so 25 hours is the most you can go on an oil interval, and at each interval there will be high levels of wear metals.  This is the absolute number 1 reason for engine wear.  Also misinformed operators fall into the new synthetic oils and think they can extend their drain intervals buy using a superior oil.  Not the case, the high wear metals can and still will eat the engine alive.  

-Both K-series,  and Magnum have a BALL BEARING on each side of the crankshaft, so sideways thrust loading of the crankshaft is allowable.  You could use a manual PTO or an electric PTO.

-K Series engines used to run a Carter carburetor and throttle shaft failure was not a big issue.  The carter was also a dirtier carb when engine was lugged, but allowed for severe lugging and in some cases a bit of black smoke will occur during recovery.  

-Magnum pretty much from the get go used the Walbro or Genuine Kohler carburetor, and throttle shaft failure (looseness) became a bigger issue M14 and M16 especially.  Once loose it will wipe out your rings, and bore polish the cylinder walls.  The Walbro variant carburetor will burn a tad cleaner, but will not tolerate severe lugging of the engine.  Therefore smoke will not be observed during recovery.

-Kohler command pro engines are quite a technological upgrade over the K/Mag series, the OHV gives more power / torque, no need to do decarbon services, and overall burn less fuel for the amount of work they do.

-The command pro engines will often NOT have BALL BEARINGS, and instead use plain journals with pressure lubrication and an oil filter for longer drain intervals.  They require an electric PTO and do NOT tolerate side thrust loading.   

-With the full pressure lubrication and assuming the owner follows proper maint practices (50HRS), these can be rated to last equal to a K/Mag series.  With regard to their top end lubrication, and quality cast iron cylinder liner, it is possible they could last longer with emphasis on proper maint.  

 

The Kohler command pro engines are not throwaway engines like the single cylinder briggs intek with cam failures, or the kohler courage engines with the counter balance / block cracking issue. 

 

 

[peter lena 8,634]

@T-Mo  nice pick up ! that pto set up is telling you something , usually anything related to it , needs  maintenance, that clutch spring set up says , LUBRICATION , get the rust out . pto set up has 12 bearings related to it , not counting idler  pulleys . get that paint in a penetrating oil  spray down , soak going on , while you are doing other things , the longer it sits / soaks in the better the paint recovers . was , already  mentally going over the recovery stages , good luck , nice unit , pete 

[T-Mo-(Moderator) 4,496]

All, I think I might have mentioned it in this thread back in 2021, I gave this tractor to my brother-in-law so I have no control over it anymore.

[John c 79]

T-mo,  so what ever came of this machine, did your BIL get sorted out and back in service