02-08-2018, 05:01 PM
Try using a barrel or plastic garbage can with a minimal amount of water(6-8 gals) to circulate through engine with about 4 gallons of distilled white vinegar. Vinegar is not expensive. Don't do it near any lawn or plants, it seems to work better than roundup. Newer engines can be attached with a pump system from the tank to circulate thru engine without running the engine. It will take at least an hour minimum for the descaling process. There are products that one can opt to use in place of vinegar for descaling and of coarse scheduling for shop maintenance. If its a DIY project and you have to run motor it would be a good idea to remove prop for safety purposes.
[signature]
[signature]