Picked up a cheap OB to tinker with, same as this mariner 4 hp 2 stroke | eBay
Chap I bought it from had stripped the carb and it did not run thereafter, quick rebuild and it now starts but there is a little hesitation and stalls if I let it tick over for a while then try to rev it. I presume fuel starvation in the supply side. Any usual places to look?
The carb has a square port/block that the fuel feeds into which also seems to have a vac line running into it, is this some sort of fuel pump system.
I had vent open but not sure if it was working, will try with lid off.
Seems quite a powerful motor for its size, boought to see if it will push my tinker tramp at more than 4 knots!
Any tips much appreciated!