Bob teaches you how to service the spark plugs on your Harley’s engine. Although you can clean and service your old spark plugs, Bob recommends just buying new ones because they are fairly inexpensive. You should purchase gapped, Harley-only spark plugs which usually come with a gap of 38-43,000th of an inch. After applying some anti-seize to the threads of the new plugs, you can thread them into the cylinder by hand and tighten them with a torque wrench and you’ll be good to go.
Bob and Mark demonstrate the best way to remove and replace the rear tire on your Harley Sportster. Then Bob shows you how to service the rear axle and inspect the wheel bearings so you can guarantee a smooth and safe ride. Also, he makes sure to apply anti-seize on the axle.
Bob and Mark put an older Sportster up on the lift to show you how to service the front and rear brake calipers. They teach you which parts to remove, clean and replace, and discuss the components of the single piston-style caliper assembly and how they work.