I want to get service info for a Sharp R3521GK microwave oven. I've searched online without luck. Specifically I want to...

My old (60 years) Briggs & Stratton lawnmower engine uses a Champion J8 spark plug. You can take the original plug of your mower to a spare parts shop or mower repair shop to try to get a replacement. Don't get a plug that's longer than the original, if too long it will break the piston of the engine.

Use a 'plastic opening tool' that you can buy a set of online. They come in various sizes and shapes, some resemble a thick guitar pick and some resemble a sharpened chopstick at one end and the other end resembles a screwdriver's tip. They are useful for opening laptops, routers, hubs, etc. without damage.

I've used this for years, it works great: https://www.lazada.com.my/products/ready... It has adjustable magnification of around 2 to 20 times and an adjustable LED light. You can probably find it on other sites too, such as aliexpress.com

It appears that no DNS servers are set. They can be set both in the router and computer. Setting in the WAN side of the router will make all connected device use the WAN DNS. I suggest use of Cloudflare Public (FREE) DNS servers 1.1.1.1 and 1.0.0.1 because Cloudflare does not do tracking of users.