When a car problem occurs, the first step is to trouble shoot the related system. Then, perform simple tests that can lead you to the cause of the malfunction and the repairs needed to correct the problem. Follow the "first thing to check" list and test by symptoms how to test for a problem, then execute the proper repair.
Motorcycle Carburetor Upgrade
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Installing the High-Performance Carburetor
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The manifold has already been installed, but it was left a little loose in order to have room to put the stabilizer bracket on. Be sure to install the bracket on the crankcase stud, located at the top of the crankcase between the cylinders -- and secure it with a stud nut.
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The insulator block and carburetor both have an O-ring seal. The O-ring seal goes to the flat -- or the machine -- surface, the flat surface of the insulator block in this case.
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Place the insulator block sits on top of the stabilizer bracket and the carburetor on top of the insulator block. Simply thread the stud nut through and hang the insulator block on it and then set the carburetor in place.
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From the opposite side align the carburetor and bracket -- and then tighten the bolts evenly. Add a drop of blue threadlocker to the bracket mounting bolt to prevent it from vibrating loose. Be sure to use the "blue" because it will hold it in place but allow you to loosen the fasteners down the road if need be. The "red" lock-tight will make that a difficult task. Tighten the stabilizer bracket.
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Now you can secure the manifold that was left loose earlier while installing the carburetor. Since you're dealing with aluminum again, be sure to only give the bolts a snug fit -- not tight.
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Align the gasket on the air-cleaner vacuum plate, install the plate onto the carburetor studs and install the mounting bolts. Get them threaded by hand and then tighten them down.
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The air filter goes on next, and then the cover.
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Tip:
Don't tighten anything down until you get "all" the fasteners in first. The reason you don't want to tighten anything is because you're handling aluminum and need to have even pressure as the surfaces come together. When installing aluminum parts snug all the bolts first and then go back and tighten evenly.
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Note:
The fasteners also have lock washers so they're not going to back off. Between the lock-tight and the lock washers, you'll get a vibration-proof mount. And if you've ever ridden an old Harley-Davidson, you're going to need it.
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