OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Four Stroke Lawn Mower Frames Deutscher H660 - TLC for transmission?

Hi All,

Picked up one of these several months ago - was like many Deutschers, rather mistreated by previous owner and I've in my spare time been chipping away at getting it back up to 'fighting condition' prior to cutting it loose on my acre of hyperactive Kikuyu.

The Nikki carb had been leaking, but a few seal set fixed that - and the Intek 10.5hp started 1st pull today (with none of the scary kickback I'd read about).

So I placed some Nulon oil flush in the engine - ran for 15mins, drained that.

Also dumped the transmission fluid while it was still warm.Upon inspection it was well under the 750ml these units are meant to carry (I did tilt & use compressed air to blow out every last bit in there), pretty cloudy but no sign of overt metal fragments etc (transmission itself ran well no probs at all shifting or staying in gear through range of hills etc).

MY QUESTION is should I run some kind of a transmission flush or a DIY cleaner (have read kerosene or diesel as a flush in trans is ok) through it just to get out any crap or metal filings?
I'd normally not use one but as i don't trust the previous owner and the level of the fluid was I'd guess ~50% I reckon there's a tad of gunk in there.


As luck had it I already had the synthetic Penrite 85w-140 gear oil onhand - is meant to be good stuff but also wondered if an additive might be handy for the transmission's happiness or is that snake oil/BS?

Thanks in advance for your thoughts.