Bob and Mark install a Power Commander to custom map this Harley after a custom exhaust and air intake. They remove the battery and remove the battery box to properly install the Power Commander. Take your time and only cut the tie wraps that you have to. They have to level the relay box to install this PC since this model has a custom rear fender, check your model and install instructions. Battery back in and they use a little dielectric grease to install the PC plug into the ECM and back to the factory harness. Once the PC is in place they download a map to it for the custom set up from the computer.
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4:14Harley Sportster Spark Plugs Replacement
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.
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8:13Harley Fork Oil Service
Bob and Mark demonstrate the best way to empty Harley fork oil from your Sportster’s front fork sliders and replace it with new oil. It can be a two-man job, so try to complete the service with a friend. Newer bikes mostly use 39-millimeter forks, but most bikes are preset with varying levels of spring in the sliders, so consult your manual before you begin this service. Like any other service, you should clean all of the parts that you remove with parts cleaner to ensure that your bike operates smoothly between services.
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1:16Harley-Davidson® Battery Tender Review
Unless you have a kick-start, you’ll need a battery to get your Harley started and to keep it functional. Bob shares some tips on Harley battery replacement and upkeep.
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7:37Sportster Primary Chain Adjustment & Chain Tight Spot
When you’re adjusting the primary chain on your Sportster model, it’s always specified to adjust it in the tightest spot of its travel. Whether you use the hot or the cold measurement, Harley specifies that you do it in the tightest area. Bob teaches you a quick and simple method for locating the tightest spot in the path of the chain. He stresses that any time you are servicing inside the primary you should always unhook the negative cable.
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