OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Honda Engines Non starting GXV140 - logic check please

The odd thing was that the motor was running quite well when I used it. That suggests that either I've put something back wrong (I didn't take out the timing gears) or something I've done has messed it up

Duncan, the fact you say it ran quite well means stop thinking along these lines, the problem is the carby, the rest of the rebuild is fine by the sound of it, fix the carby and you will fix the problem and I have found that cleaning the old carby doesn't always work either. I don't have an ultrasonic cleaner so I can't say if that would fix the problem. Another little trick is to get some 6mm threaded rod to make up studs for the carby so you can assemble all the bits without putting the filter housing on and then you can see that everything is working and the choke is closing fully. Then you can put the filter housing on after you have got it running. The way Honda set these up is just an abomination, something that Briggs got right with their Quantam carby bolt on method.