I just got my Hyper 7 PBS. Followed the instructions posted with regard to the break in. It was going well until the engine won’t start on break in #3. The fuel does not appear to be flowing into the carb when I use the pull start. What is the proper method to prime before starting? Is there some other reason the fuel is not flowing? I’ve checked the fuel line and filter, all appear to be OK. Thanks.

i assume you are blocking the exhaust as you pull the pull starter ? if your not getting fuel flow check the tank seal.. open the lid and screw the little screw inside the lid a half turn.. thai will make a better seal..

Way to test is blow into the exhaust pressure line while blocking the other end and listen for air leaks.. you should be able to hold both ends for at least ten secods and then release the carby end and hear the air woosh out.. if it dosent do that you still have an air leak.. check the tank for cracks too .. and check the rubber seal on the exhaust at the back of the engine and the rubber coupler..

Thanks for the tip. Will try to fix the problem later this week.

Did the exhaust pressure test. Found a hole in the pipe. What's the best way to seal it? Wondering if I can solder the leak?

Get some Knead IT , its like a putty but it becomes rock hard and is for metal and aluminium applications.. Most harwares stock it.. It comes in a tube and you slice a piece off, knead it till the inside mixes with the outside, roughen up the surface and make sure its clean from oil etc.. then patch it up.. Voila !