I turned piston to TDC and carefully scraped off the carbon with an old butt chisel. Lotta soft carbon, the result of MMO dosage on the heavy side? I use about a qt a yr. The gasket didn't survive the 2nd head R+R. However that is fixed thanks to an E bay B+S gasket for 8.88 in the door. The air cleaner housing is now secured solidly to the carb and no more nuts will be ingested. I there is a fair amount of gasket stuck to the head. I considering running the head over the soft wire wheel on my bench grinder. The dedicated wheel is used for cleaning up bolts, and small parts. Would it be OK to buff up the head with it?
How to remove old gasket and carbon, School me
- Thread starter andyd
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Try a plastic chisel “softer than the metal” first.
You might wet i up real good with bake cleaner to loosen it up first. Then plastic scrape away.
You dont want to create an uneven surface for the seals.
You might wet i up real good with bake cleaner to loosen it up first. Then plastic scrape away.
You dont want to create an uneven surface for the seals.
Originally Posted By: danez_yoda
Try a plastic chisel “softer than the metal” first.
You might wet i up real good with bake cleaner to loosen it up first. Then plastic scrape away.
You dont want to create an uneven surface for the seals.
I think there is probably a large margin for error on a head like this. I would try to solvent it off or heat it up before I resorted to a wire wheel. I would use a brass wire wheel, deffo not a steel one.
Brake cleaner, or you could use acetone or even alcohol.
Try a plastic chisel “softer than the metal” first.
You might wet i up real good with bake cleaner to loosen it up first. Then plastic scrape away.
You dont want to create an uneven surface for the seals.
I think there is probably a large margin for error on a head like this. I would try to solvent it off or heat it up before I resorted to a wire wheel. I would use a brass wire wheel, deffo not a steel one.
Brake cleaner, or you could use acetone or even alcohol.
Berrymans B12, then plastic or on the tough stuff, razor blade scraper at a shallow angle.
Originally Posted By: andyd
I was considering running the head over the soft wire wheel on my bench grinder. The dedicated wheel is used for cleaning up bolts, and small parts. Would it be OK to buff up the head with it?
Yes but keep it wet with WD-40.
I was considering running the head over the soft wire wheel on my bench grinder. The dedicated wheel is used for cleaning up bolts, and small parts. Would it be OK to buff up the head with it?
Yes but keep it wet with WD-40.
Green scotch bright and carb cleaner.
I have always used a sharp putty knife to scrape carbon and gasket material from the heads of all small engines. Be careful, but minor scratches that you can't catch your fingernail in won't hurt anything. I have been doing it this way for 40 years + and haven't had a problem yet.
I used a brass brush and some old gas on the head and and block. I dug the carbon out of the corners with my finger nail. Fairly impressed with how easy it was to remove the carbon. MMO IS good for something.
Keep the gasket soaking in a solvent that won't easily evaporate like mmo etc. and let time be your elbow grease. I use a dedicated gasket scraper and carb cleaner to finish it off.
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