This Stihl BR340 leaks fuel and won't start. It was working fine last week. Following several clues, and a few special tools, solving the mystery with the help of a friend, eventually rebuilding the Walbro HD carburetor. Check out Tom at @VintageEngineRepairs

This MityVac MV8500 is one of the best handheld vacuum pressure testers on the market: https://amzn.to/43MP5iq
Stens 102-142 pre-filter and 102-414 air cleaner kit: https://amzn.to/3L0cg0b
Walbro K10-HD carb rebuild kit: https://amzn.to/3A2q5WA

00:00 I'm not Tom
00:51 Spark arrestor and fuel filter check
01:31 Spark plug and compression check
02:45 Air filter check and clear out flooded combustion chamber
05:45 Test fuel tank vent
08:08 More vacuum and pressure tests
09:45 Disassemble carburetor
12:23 Reassemble needle and metering diaphragm
17:15 Replace inlet filter screen and fuel pump
20:02 Check for air leaks
21:05 Replace fuel tank vent
22:15 Refit carb, fuel line and throttle cable
23:30 Clean spark arrestor screen
25:16 Replace pre-filter and air filter
26:39 The Money Shot

The tools I like and use most often:
Magnetic spark plug socket set: https://amzn.to/3CzmpvO
Tachometer: https://amzn.to/3sHibiH
Vessel Megadora JIS screwdriver set: https://amzn.to/363RFqO
Channellock Bent Needle-nose pliers: https://amzn.to/3I5DbnA
Long 1/4 Quick-connect Torx Driver Bits: https://amzn.to/3HUNgnm
Spark Tester: https://amzn.to/3CxW2qi
OTC Leak-down Test Kit: https://amzn.to/3CyUhJn
Compression Tester: https://amzn.to/3IWd6sp

Wear your safety glasses, or you'll shoot your eye out. Try on some gloves. Take off that spark plug boot. Clean your room. Open the windows, those fumes are nasty. Just 'cause I do it, don't think it's the end all, be all solution. There's plenty more ideas out there, I can't take responsibility if you slice off a few fingers after watching my videos. And don't just pour that toxic stuff down the sewer or in the ditch, dispose of waste responsibly. Just be safe, OK?

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  / thelawnmowerlady  
https://the-lawnmower-lady.blogspot.com/

Titles, opening graphics, and music by AbleVFX.

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Disclaimer: The content of this video is purely for my entertainment, and is available to you for informational and educational purposes only. It's not substitute advice from small engine mechanics with professional training and certifications, nor does it create any kind of relationship between the The Lawnmower Lady and you. Your situation may be different, and the The Lawnmower Lady makes no warranties, express or implied, as to the fit, accuracy, or applicability of the information shown in this video, and implies no guarantee of results. The Lawnmower Lady and any sponsors of this video are not liable for any damages of personal injury, property damage or loss of any kind that may result from the use or reliance on this video and/or any parts and procedures represented in this video. You are using the information presented in this video solely at your own risk.

#stihl #walbro #smallenginerepair #lawnmower #DIY