Briggs & Stratton 5 HP Engine Startup

This engine was sitting outside and had the fuel tank full of water and rust. I had to clean the tank out and clean out the rust from the main carb jet. It runs, but not as good as it could. It will not idle low enough for the clutch not to engage. I found later on that the mixture screw on this pulsa-jet carb was turned the entire way in. It looks like the proper mixture screw with the needle tip was removed and a regular screw put in its place.

Category:

Howto & Style

Tags:

• briggs
• stratton
• startup
• 5hp
• engine
• go
• kart
• pulsa
• jet

[Canucks44Life]

Hey! I've got a briggs and stratton 5hp too and it's hasn't been used in a long time. there's old fuel etc in the gas tank and I need to clean it out so I was just wondering what you did to give yours a clean? Thanks!

[More350Power]

@Canucks44Life What I did first was take the fuel tank off the engine and remove the carb from it. I cant remember if I was able to do it and leave the carb on the engine or not. Once you get the tank and carb apart, I drained the fuel out. Flushed it with some fresh gas, let it soak, drained that out and sprayed some carb cleaner inside to loosen the gum if there was any. Mine was rusted so I had a lot more. Might want to clean the carb and the pickip tubes also.

[kris24rocks]

You need to turn your idle screw up I race 5hp B&S engines and I've had that idle problem before but don't turn it to much or it will take off when u start it

[More350Power]

@kris24rocks Good point, I wasnt thinking too clearly that day lol.  If the engine wasnt stolen from me, I would have had it going.

[Redneckfarms]

hello i think i have the same go kart engine and it will not idle and runs very rough was wandering what the tube was for that ran from the rods to the carb. thanks- redneckfarms & trevzman

[More350Power]

@Redneckfarms That tube that runs from the side of the engine to the carb, usually with a rubber boot at the end is a crank case breather. The older engines just had a vent on the side. The carb could need a good cleaning and possibly a rebuild. This one does have a diaphragm in it that can get hard especially with ethanol gas. I believe they are called pulse-a-jet carbs.....

[Redneckfarms]

thx 

[More350Power]

@927Adam Thanks, appreciate it!

[927Adam]

@More350Power oh man,that sucks. but i hope my suggestion will help u in the future. i had the same problem with mine. if you have any problems with other engines in the future don't hesitate to ask me. Have a good one.

[More350Power]

@927Adam That is one of the first things I tried, but I found the end of the screw had the needle broken off. Im surprised it ran at all lol... Wish I still had it, got stolen with all my other engines.