Briggs & Stratton V Twin Leaking Oil? UV Dye Finds the REAL Leak (Full Repair Walkthrough)

Thank you for watching!! If we helped you out and you want to show your support - LIKE, SUBSCRIBE or give us a shout out below If you saw something you didn't like leave your comment below as well, these things help us get better! The links contained here are affiliate links for which we may be compensated if you make a purchase To see our recommended tools and products visit our Amazon shop at https://www.amazon.com/shop/individualizedrepair Interested in starting your own small engine repair business? Check out my other channel, where I share tips on building a repair company from scratch with minimal investment @SmallEngineEdge1 John Deere Z655 leaking oil and making a mess? Briggs & Stratton twin cylinder leaking completely walkthrough and repair In this video I show how I diagnose and repair a serious oil leak on a Briggs and Stratton commercial V twin (27.0 HP cyclonic) engine model 440977-0110-G5 The leak looked like it could be head gaskets at first, so I walk through how to confirm engine health the right way This one initially looks like it could be head gaskets, so I show how to confirm what is actually going on before you start replacing parts. You will see: How to find top dead center (TDC) on the compression stroke on each cylinder Why a leak down test tells you cylinder health and can help confirm a bad head gasket How to identify an external head gasket leak by listening for a whooshing sound (with an example mower) Next I use UV dye, a UV light, and UV glasses to make the leak obvious when you cannot tell otherwise The dye test quickly shows the real leak sources on this mower: Oil cooler and oil cooler lines Drain hose fitting where it threads into the sump (crankcase cover) Sump (crankcase cover) gasket leaking (visible with dye) On this Z655 the oil was coming from the oil cooler and oil cooler lines, the drain hose fitting where it threads into the sump, and the crankcase cover gasket area I also show all the common places to check on these Briggs V twins, including a loose oil filter, oil cooler base leaks, valve covers, dipstick tube issues and the end of the drain tube (even though ours was leaking at the threaded fitting, not the hose end) Repairs & service completed in this video: UV dye oil leak test with UV glasses and light Checking common Briggs V twin oil leak points including head gasket, oil filter and cooler base Valve cover gaskets Crankcase cover sump gasket Oil cooler replacement Oil cooler lines replacement PTO seal replacement Engine removal, repair, and reinstall Ground drive hydro belt removal and replacement What to inspect on the drive idlers while you are there Quick note on low power bogging caused by water in the fuel and a fuel filter replacement If you are chasing an oil leak on a Briggs V twin and cannot tell where it is coming from, the UV dye method and details in this video will save you a lot of time and prevent misdiagnosis UV Light & Glasses Kit https://amzn.to/3ZVas08 UV Dye https://link.amazon/B07niMFAc Part's Used: 795387 PTO Seal https://amzn.to/4kYB5v2 594195 Crankcase Gasket https://amzn.to/3MHcuhy 690971 Rocker / Valve Cover Gasket https://amzn.to/4rxRdps 796862 Oil Cooler https://ebay.us/mcAqXO 799104 Oil Cooler Hoses https://ebay.us/FKVLRh Video equipment: GoPro Hero 13 https://amzn.to/4m3kZQE GoPro Media Mod https://amzn.to/46R95UK GoPro Light Mod https://amzn.to/44wIGdA GoPro Macro Lens Mod https://amzn.to/4d99lQi Mic: DJI Mini Mic 3 https://amzn.to/4bmNROT Don’t forget to like, comment, and subscribe for more lawn mower repair tips, troubleshooting guides, and DIY small engine fixes to keep your equipment working smoothly! Save some money by doing it yourself! About Us: My name is Martin. I have been repairing tools and small engines for almost 20 years. We operate a small engine repair shop in Illinois. We service / repair Briggs & Stratton, Kohler, Kawasaki, John Deere, Cub Cadet, Toro Tecumseh, Loncin, Honda, Craftsman, Husqvarna, MTD, Troy Bilt, Simplicity, John Deere, Exmark, LCT, Generac and many more brands. We work on riding mowers, walk behind mowers, snow blowers, zero turns, generators, pressure washers and much more. We normally repair about 4,000 pieces of equipment every year and look at many more that are beyond an affordable repair. Hopefully our videos will save you some money and give you the information you need to work on your own equipment or figure out the issue at hand Disclaimer: Links included in the description are affiliate links. As an Ebay & Amazon associate we earn from qualifying purchases. There will be no additional charge to you for purchasing here. We appreciate your support, which allows us to continue to provide original content Please be careful when repairing any piece of equipment and follow all possible safety measures This video is for entertainment purposes only #briggsandstratton #johndeere #zeroturn #oilleak #smallenginerepair #vtwin #lawnmowerrepair #mechanic