Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide

can I take off the left side mid controls, and put a plain inspection cover on a 1984 fxr or do I have to cap it

how do i adjust the timing on a 1988 fxr

To set the timing on your 88 Evo powered FXR, you want to first identify the timing marks on the flywheel. Raise the rear wheel of your bike off the ground and secure it so that it won’t fall over. Remove the spark plugs and shift the transmission into high gear.

Remove the Timing Hole plug on the left side of the engine.

Now, to find the Top Dead Center mark, insert a plastic drinking straw, or something else that will bend but not break, into the front spark plug hole. With the straw touching the piston, bump the rear wheel in the normal direction of rotation until the straw indicates the piston is at TDC. Look in the timing hole and you should see a vertical line indicating TDC.

Now, start bumping the rear wheel in reverse. You’ll come to a mark that looks like the figure 8 laid over on it’s side, a lazy 8. This is the 20?° Before Top Dead Center mark that is used by the dealer. Continue bumping the rear wheel until you see a dot on the flywheel. This is the Front Cylinder Advanced Timing Mark.

This is the mark you want to see in the timing hole and represents 35?° BTDC.

Now, temporarily reinstall the timing plug leaving it loose. Shift the transmission into neutral and reinstall the spark plugs. Connect an automotive type timing light to the front spark plug wire and a battery. Start the engine and allow it to warm up a bit.

Bring the engine up to 2200-2500 RPM. Remove the timing hole and shine the light in the hole. NOTE: A Harley engine generates a huge amount of crankcase pressure. This pressure will blow out of the open timing hole with great force and will also blow an oil mist out. DO NOT GET YOUR EYES DIRECTLY IN FRONT OF THE HOLE.

Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide

You can purchase a clear timing plug to install in the hole but it doesn’t work too well. Another device called Clean Time works better.

At 2500 or higher. the dot should be in the exact center of the hole. If it isn’t, but you can still see it in the hole, you’re within about plus or minus 2?° of being correct. If you need to adjust the timing, remove the cover over the timer cavity hole in the nosecone of the engine on the right side of the engine. If it’s still got the original rivets in it, you’ll have to drill them out. DO NOT USE ORDINARY RIVETS TO SECURE THE PLATE.

These are special rivets. Either get replacements at a dealer or put screws into the plate. You’ll see the timing sensor pickup and the plate it sits on. Loosen the stand off bolts and you can rotate the plate clockwise to advance the timing, counterclockwise to ****** the timing.

If the dot is at the forward part of the hole, the timing is retarded and needs to be advanced. Dot to the rear, timing is advanced and needs to be retarded.

Now, if you cannot see the mark indicating that the timing is way off and you can’t see the dot, you’ll need to use a timing light with a manual advance knob and use the TDC mark instead. Set the timing light’s knob to 35?°. With the engine running at elevated RPM, shine the light at the hole. Adjust the knob back and forth until you see the TDC mark dead in the center of the hole. Read the dial at the knob and see what it indicates.

This is your actual ignition timing. If it’s above 35?°, your timing is fast and should be retarded and Vice versa. Your timing should be set at 35?° BTDC.

Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide
Harley-Davidson FX Super Glide


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