Repair 7

You can restore the height of the brake pedal on your Mustangs rear drum brake by adjusting the brakes from time to time. This will also have the added benefit of extending the life of your brakes and restoring the emergency brake function. Mustangs with rear disc brakes are adjusted automatically when you push down on the brake pedal.

Instructions

1

Put wheel chocks in front of and behind the front wheels of the vehicle. Put the floor jack under the rear differential and raise the vehicle up high enough to slide the jack stands under the car. Position the stands next to the rear axles. Lower the car onto the jack stands with the jack.

2

Disengage the parking brake and put the car into neutral.

3

Find the adjustment plug, which is toward the bottom of the backing plate, and remove it. The backing plate can be found behind the rear wheels.

4

Put the screwdriver through the hole in the plate and turn the self-adjuster upward while turning the closest rear wheel in a forward direction. You will know the brake is fully adjusted when you feel a slight drag as you spin the wheel. Remove the screwdriver and put the plug back in place. Repeat with the other wheel.

5

Put the car into park and raise the car. Slide out the jack stands and lower the car to the ground. Remove the wheel chocks. Engage and disengage the parking brake several times and test-drive it to make sure the brakes have been adjusted properly. If the parking brake clicks a maximum of six times and the brake pedal is higher, then you know it has been properly adjusted.

Carburetors combine fuel and air for internal combustion engines. Walbro carburetors are generally used for hand-held devices such as line-trimmers, chainsaws and leaf blowers. The tools used to adjust Walbro carburetors are not available to the general public from Walbro or Walbro warehouse distribution centers due to recent EPA and California Air Resources Board emissions regulations. The carburetors that these tools are used to adjust are emission-regulated carburetors, and adjustments of them are to be done by licensed professionals per an agreement between Walbro and the EPA.

D-shaped adjustment tool

This carburetor adjustment tool is used to adjust the needles on many Walbro carburetors. The "D" shape ers to the end of the screw, which a Phillips head or a flathead screwdriver will not fit. Only licensed professionals have access to this type of screwdriver, which allows for fine tuning of the carburetor while it is running. When a carburetor is adjusted or repaired, the D-shaped screws are loosely tightened while the engine is not running. To complete the adjustment, the engine is started and the screws are adjusted based on the sound the engine produces. Walbro carburetors are installed in two-cylinder engines, but if the mixture of gas and oil produced by the carburetor is too rich, the spark plug will intermittently misfire, making a sound like a four-cylinder engine. The D-shaped adjustment tool tightens the screws, or needles, until the engine sound is smooth and consistent.

500-20 Limiter cap removal tool

This tool is used to remove the plastic limiter cap on some models of Walbro carburetors. Limiter caps are part of the tamper-proof system set in place by Walbro to abide by EPA regulations. Limiter caps cover the screws that adjust the oil and gas mixture. These caps are made of plastic, and the removal tool is similar to a metal hook, which pulls the cap off, leaving the screws open to adjustment.

500-508 Limiter cap removal tool

Like the 500-20 limiter cap removal tool, the 500-508 is used to expose the screws for adjustment. The difference between the two is the size of the cap and the amount of space available to insert the hook for removal.

You can adjust the rear brakes on your 2001 GMC Safari right in your home garage. This adjustment should be done periodically to lengthen the life of your rear brakes, to improve brake function, and to restore the function of the parking brake. This adjustment can be done in less than an hour and requires only a few basic tools that can be purchased from your local auto parts retailer. The adjustment procedure basically reduces the gap between the shoes and the drums, resulting in a higher brake pedal height and faster braking times.

Instructions

1

Put on work gloves and safety goggles.

2

Position two wheel chocks in front of each front wheel and two wheel chocks behind each front wheel to keep the car from moving while you work on it.

3

Put the floor jack under the rear differential and raise up the Safari until its higher than the jack stands. Slide the jack stands under the vehicles axle tubes next to each of the rear wheels. Lower your 2001 GMC Safari onto the jack stands.

4

Look for a rubber plug in the backing plate behind the wheel. Remove the plug.

5

Insert a screwdriver into the hole and rotate the star-shaped adjuster upward at the same time spin the rear wheel in a forward motion. Keep spinning the wheel and rotating the adjuster until you feel a slight drag on the wheel. Remove the screwdriver and reinsert the plug. Repeat this procedure for the other rear wheel.

6

Raise the vehicle up off the jack stands and move them out of the way. Lower the vehicle to the ground and remove the wheel chocks. Take the GMC for a test drive to make sure the brake pedal height is higher and that the parking brake is tighter, clicking a maximum of six notches when you engage it.

The Rochester 2G carburetor has two bores, two venturis and two separate but identical metering systems. The two-bore carburetor is normally used on V-8 engines where each bore supplies the air/fuel mixture to four cylinders through a divide intake manifold. The model 2G was equipped with a manual choke and was primarily used on trucks and marine engines. The 2G carburetor was a popular choice for the "Tri-Power" triple carburetor muscle cars of the 1960s. Routine adjustment of the 2G carburetor can be done without removing the carburetor and will keep it operating at peak efficiency.

Instructions

1

Shift the transmission into "park" if it is an automatic transmission or "neutral" if it is manual. Chock one tire and set the parking brake so the vehicle will not roll. Remove the air cleaner assembly and set it aside.

2

Loosen the idle stop screw until the throttle plates are completely closed in the carburetor body. Set a machinists double-ended square to 1 1/8 inches and place it at the top of the air horn, with the measuring rod resting on the pump rod cam. Bend the pump rod with a pair of needle-nose pliers until the cam rests on the end of the square.

3

Set the double-ended square to 1 inch and place it on the air horn with the measuring rod resting on the idle vent cam. Open the throttle valve until the vent valve just closes. Bend the tang on the pump lever until the cam just touches the measuring rod on the double square.

4

Open the throttle plates wide open and close the choke. Insert a .055-inch wire feeler gauge between the choke plate and the wall of the air horn on the carburetor body. Bend the tang on the throttle lever to adjust the clearance.

5

Turn both idle-mixture screws clockwise and count the number of turns it takes until they gently seat. Return the screws to their original positions by turning them counter-clockwise the same number of turns that it took to seat them. If both idle-mixture screws were not adjusted to the same amount initially, set them both to two turns out at this time.

6

Connect the tachometer to the engine by following the manufacturers directions. Connect the vacuum gauge to a "manifold" or constant vacuum source. Start the engine and take it to normal operating temperature. Set the idle speed to 850 rpm with the idle-speed screw. Note the reading on the vacuum gauge and turn one idle-mixture screw clockwise a half-turn and note the change on the vacuum gauge. If the vacuum reading increases, turn the other idle-mixture screw clockwise a half-turn. Note the vacuum gauge reading. If the gauge continues to climb, adjust each idle-mixture screw in another quarter-turn. If the engine stumbles or the vacuum drops when turning the idle-mixture screws clockwise, turn both screws out a half-turn and note the gauge reading.

7

Adjust the idle speed screw to maintain a constant engine speed of 850 rpm as the idle-mixture screws are being adjusted. Repeat steps 5 and 6 until the idle speed remains constant and the maximum vacuum reading is achieved by adjusting the idle-mixture screws. Ensure that each idle-mixture screw is turned in or out exactly the same amount.

8

Remove the tachometer and vacuum gauges. Replace the air cleaner and remove the wheel chock.

Dont panic if the roof rack on your Honda Odyssey looks bent and asymmetrical. More than likely, the cross bars have simply shifted due to hard stops and bumpy roads, especially if theyve been loaded with heavy luggage. This is a common problem with all roof racks. But in just a few minutes you can adjust the cross bars on your Honda Odyssey roof rack, keeping them ready to safely bear your luggage for many more miles to come.

Instructions

1

Loosen the screws on each side of the cross bars. Some roof rack models use Allen screws, others have a bolt that can be turned with pliers.

2

Align the end of each cross bar symmetrically, about 4 to 8 inches from the front and rear of the roof rack.

3

Securely tighten the screws on each end of the cross bars.

The parking brake on a Subaru consists of a lever in the passenger compartment that is connected to a rod with a "T" fitting and a cable running to each rear wheel. When you pull the lever, the cables activate the parking brake drums and hold the vehicle. It is possible for these cables to stretch and be difficult to engage. If you hear more than six clicks when you lift the lever, your parking brake needs adjustment.

Instructions

1

Check the braking system on your Subaru to ensure that all air has been bled and the hydraulic system is adjusted properly and functioning as designed. Complete any repairs or adjustments to this system before adjusting the parking brake. Apply the parking brake several times while counting the clicks. If the number is more than five or six you will tighten the cable, less and you will loosen it.

2

Remove the center console by carefully using the trim stick to pry up the console trim cover. Remove the console cover and tray and then the console.

3

Use a small wrench to loosen the lock nut on the adjuster while holding the adjustment nut with another wrench. Turn the adjuster nut counter-clockwise to loosen the assembly. Snug the nut by hand and apply the brake. If it is still out of adjustment, continue tightening the adjustment nut until you have the proper number of clicks.

4

Tighten the lock nut against the adjusting nut using two wrenches. Reinstall the console, console tray and console cover. Reinstall the console trim cover.

Adjusting the air fuel mixture on a Holly double pumper is critical for smooth idling and for a smooth transition from idle to acceleration. If the mixture is too lean, the vehicle will hesitate during acceleration until the carburetors accelerator pumps can deliver fuel. In contrast, the engine will slightly flood from excessive fuel on acceleration if the idle mixture is set too rich. While the settings are critical, the task is easy.

Instructions

1

Connect a tachometer to the engine, following the tachometer and engine manufacturers instructions.

2

Screw the idle mixture screws clockwise with a small flat blade screwdriver, until they gently seat. Turn each needle valve 1 1/4-turn counterclockwise. The idle mixture screws are located in the front of the metering block on either side of the metering block. The metering block is located between the venturi body and the float bowl.

3

Slip the clear plastic line of a vacuum gauge onto the vacuum port on the carburetors throttle body. The throttle body is the plate at the bottom of the carburetor where the throttle linkage attaches.

4

Start the engine. Apply the parking brake. If the engine is equipped with an automatic transmission, put the transmission in drive.

5

Turn the idle mixture screws clockwise with the screwdriver until attaining the highest possible vacuum reading. Turn both screws equally.

6

Set the idle speed to the manufacturer specifications by moving the title speed screw counterclockwise or clockwise, depending on the need. Do this while viewing the reading on the tachometer until you attain the proper idle speed.

7

Put the vehicle in park and turn off the engine.