Stihl MS 271 Farmboss Chainsaw -- WHY Won't It Keep RUNNING -- STARTS And DIES

This Stihl MS271 Wood Boss / Farmboss Chainsaw was dropped off at my shop for repair. The MS271 is a 50CC Farm Class chainsaw that is still in production today. The MS271 replaced the MS270. The MS271 and the MS291 are closely related brothers (think, big brother / little brother) The customer states: The saw won't stay running, and service it while you have it. CHECK OUT ALL OF MY GOODIES HERE: Ultrasonic Cleaning Solution: https://amzn.to/4rD602h Ultrasonic Cleaner: https://amzn.to/3MMke1K MityVac Pressure/Vac Teste : https://amzn.to/4p2OZNU Compression Tester: https://amzn.to/4pKZCVk DEPSTECH Camera (Borescope) : https://amzn.to/4oXeYGn Echo Red Armor Oil Mix: https://amzn.to/45RuRXt Kit of Silicone Plugs!: https://amzn.to/3XKiKqt My Red Spark Plug Remover Tool: https://amzn.to/4obmV9K STIHL OEM Tool (I use this for removing fuel line): https://amzn.to/4qXg5WC Plastic Containers (I use to collect fuel): https://amzn.to/4igKsVb - - - - - - - - - Do you want to buy tools that I use at work everyday? Small Butane Torch : https://amzn.to/4coyUP3 Spark Plug Thread Repair Kit: https://amzn.to/3Oz7gVz STIHL OEM Tool (I use this for removing fuel line): https://amzn.to/4qXg5WC STIHL OEM Tool: https://amzn.to/46WsYZU Stihl Piston Stop: https://amzn.to/40qWiUK Wera A5 Torque Wrench: https://amzn.to/4rDVO9y Wera B2 Torque Wrench: https://amzn.to/4a0vtMO (I have both of these Wera's in my tool box - one for small stuff and one for bigger stuff - these two will take care of everything chainsaw related - the best quality) Protective Chaps: https://amzn.to/4tmTbub Helmet Protection: https://amzn.to/46mC9m6 Gloves: https://amzn.to/4tkaYlF Felling Wedges: https://amzn.to/3MeOrGg Chain Locker (store your chains!) : https://amzn.to/4apRtQm No SPILL Fuel Can 5L : https://amzn.to/4b4l6XI NO SPILL Fuel Can 10L: : https://amzn.to/4qqcCQn Echo Red Armor Oil Mix: https://amzn.to/45RuRXt VP Racing PRE MIXED 50:1 Fuel: https://amzn.to/4an7SVv Makita Brushless Combo Kit: https://amzn.to/443Ww6w ZEP Degreaser: https://amzn.to/4p8PQwx Compression Tester: https://amzn.to/4pKZCVk DEPSTECH Camera (Borescope) : https://amzn.to/4oXeYGn (I use this camera everyday! Sometimes, Tyler steals it to look into mower engines! It works fantastic) Tachometer: https://amzn.to/4rqGhKT JIS Screwdriver Set : https://amzn.to/3MsmOJN ( I have this exact kit for carburetor tear downs and more!) (VERY good quality!) Carb Metering Height Tools: https://amzn.to/4rwB0kS T20 T Handle: https://amzn.to/4rJYD9Z T25 T Handle: https://amzn.to/4pvAYI4 T27 T Handle: https://amzn.to/4inW2Oo 8MM T Handle: https://amzn.to/49MrsvO Ratchet Scrench Chainsaw Tool: https://amzn.to/48iEcJz 2 pack Scrench (Flat and T27): https://amzn.to/4pHlqRS Kit of Silicone Plugs!: https://amzn.to/3XKiKqt ( I often use these when I need to plug a hole for a pressure / vac test) My Red Spark Plug Remover Tool: https://amzn.to/4obmV9K (I use this tool many times a day for removing / installing spark plugs) LANG Spark Plug Gap Tool (my tool!) https://amzn.to/3LVcM45 NGK BPMR7A Spark Plugs: https://amzn.to/3Kf8pjb (These are the NGK plug that work in most Stihl chainsaws, unless it's the small plug - see below for smaller plug) NGK CMR6H Spark Plugs: https://amzn.to/4oftzM2 Plastic Containers (I use to collect fuel): https://amzn.to/4igKsVb Crankcase Splitter: https://amzn.to/44herXm (Fantastic if you are splitting crank cases - works on Husqvarna and Most Stihls ) Piston Ring Compressor Kit: https://amzn.to/4rEi7g1 Flywheel Knocker: https://amzn.to/48qHJEm Flywheel Puller: https://amzn.to/4or8ZbU Intake Blocking Plate: https://amzn.to/3XXWrOa Pressure/Vac Adapter for spark plug hole: https://amzn.to/447KdX0 Exhaust Block Off Plates and Rubbers: https://amzn.to/4ufxBby Diagnostics Kit (Great Value!): https://amzn.to/48e2S4C MityVac Pressure/Vac Tester (very good quality) : https://amzn.to/4p2OZNU ( I own this kit - amazing!) Economical Pressure / Vac Tester : https://amzn.to/4rlq6yy (I Own this kit too - for the price - you can't beat it!) Stihl Bar Nuts 6 Pack: https://amzn.to/3MaJXQD Chainsaw File 12 Pack Kit: https://amzn.to/3LNLNad Chain Depth Gauge Tool: https://amzn.to/4r9SdPA Bar And Chain Measuring Tool: https://amzn.to/3MJaFAN 2N1 Chain Sharpener 3/8P (5/32) : https://amzn.to/3N5PU25 2N1 Chain Sharpener .325 (3/16): https://amzn.to/4snjFuj 2N1 Chain Sharpener Full 3/8 (7/32): https://amzn.to/40Jyuvq