I have had a TB42 carbie for near on 7 years running a imco 3A gas system that was fitted when I got it. I have had no trouble what so ever with the gas system and rarely run it petrol, only when I run out of gas until January this year. I was camping on the beach at Beachport SA and went to run on petrol for a bit and it would idle but when I put my foot on the throttle there was no responce. I could much about it at the beach so went back to gas and filled up with gas again at Robe. I tried to run it again on petrol on the trio home hopeing it could clear itself at highway speed. Nope.
When I got to have a look at at home I found that the there was no fuel getting through the booster into the ventury. If i sprayed some carbie clean whilst holding the throttle open then I could get some revs. I sprayed the carbie with heaps of carbie clean but didnt improve. I turned it off and sprayed the carbie again and left it over night. Tested it the next day and all fixed. Runs fine again. This trick also worked on my demo saw that I hadnt been able to start for near 6 months. I think I have fallen love with my first tin of carbie cleaner.
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