Restore This Stihl BR420 Blower to Its Former Glory

This Stihl BR420c backpack blower has seen better days. It needs a spa day, as well as a new spark plug boot, spark plug, blower tube, fuel filter, and a thorough carburetor clean and rebuild to restore it to its former glory. This process of checks and adjustments applies to most any backpack blower, including those made by Husqvarna, Echo, Red Max, Shindaiwa, Craftsman, Troy-Bilt, and others.

Watch this video next:    • Stihl BR550 4-Mix Valve Adjustment  -No Sp...  

Stens spark plug boot # 135-519 : https://amzn.to/3FZHTEX
Champion RCJ6Y spark plug: https://amzn.to/3QAq97U
Zama ZF-4 fuel filter: https://amzn.to/3G2Z6NI
Walbro K10-HD carburetor rebuild kit: https://amzn.to/3QyyKYM
Stens air filter # 102-414 : https://amzn.to/47fjjfg
Stens pre-filter # 102-412 : https://amzn.to/3SGZQzs

The tools I like and use most often:
My absolute favorite tester - Spark Check'r : https://amzn.to/453axCG
Mityvac MV8500 Vacuum/Pressure tester: https://amzn.to/4iN2YDj
Mityvac Small Engine Compression Tester: https://amzn.to/4jGC1CA
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
Another Spark Tester I like: https://amzn.to/3CxW2qi
OTC Leak-down Test Kit: https://amzn.to/3CyUhJn

Any links to products are likely affiliate links, and I may earn a small commission from qualifying purchases (Thank You!), with no additional costs to you.

00:00 I'm not Norm
00:52 Remove damaged blower tube
01:50 Nice sunny day at the spa
04:30 Replace spark plug boot
08:03 Spark check and plug replacement
09:23 Inspect and clean spark arrester screen
11:10 Replace fuel filter
13:41 Remove carburetor to clean and rebuild
19:56 Check metering lever height
21:12 Pressure test carburetor
22:24 Replace carburetor
23:41 Replace air filter
25:54 Replace blower tube elbow
27:31 The Money Shot
29:42 Idle speed adjustment

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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Titles, opening graphics, and music by AbleVFX.

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.

#lawnmower #smallenginerepair #DIY