Flush Crank Case

[ents]

Despite my best efforts, some crud got into the crank case while the jug and piston were off. Best way flush that crank??

Hope all is well.

 

[Sepia]

Myself I use diesel fuel. Fill crankcase, spin crank many times, dump into pail, repeat many times until I am confident the bottom end is clean.

Be prepared for a mess if you follow my instructions lol.

edit: and don't forget to lube the bearings when you are done!

 

[cus_deluxe]

i just take some 40:1 (thats what i use), and use the same process above. fill, spin crank, dump, repeat a couple times.

 

[Huskybill]

We flush the crankcase in the parts washer to wash out the chips from the gernaded piston. If it’s that bad we split the case. Minor seizing we just wash it.

 

[John Lyngdal]

i just take some 40:1 (thats what i use), and use the same process above. fill, spin crank, dump, repeat a couple times.

That's what I do as well.

 

[albert]

Pull the seals.