Quick Answer: How To Change The Transmission Oil On A Harley Davidson?

When should I change the transmission oil in my Harley?

The factory recommends you change the transmission fluid every 20,000 miles, and the primary chain oil every 10,000 miles.

How much oil does a Harley transmission take?

The transmission fluid capacity is approximately 24 ounces (0.71 liters).

How do you drain transmission fluid on a Harley?

The drain plus is located between the shock absorbers, underneath the transmission. Use the ratchet, 3-inch extension and 5/8-inch socket to remove it. Once it’s loose, finish removing the drain plug by hand to prevent it from falling into the drain pan. While the transmission fluid is draining, clean the drain plug.

What kind of fluid goes in a Harley primary?

You actually have a couple of choices for the primary drive. The optimum product would be Mobil 1 Racing™ 4T 10W-40 motorcycle oil, but it is also okay to use Mobil 1™ V-Twin 20W-50.

How do you check transmission fluid on a Harley?

Straddle your Harley and hold it level, off the side stand, for 20 to 30 seconds. Remove the transmission dipstick and wipe it clean before reinserting it into the block. Do not screw it in. Insert the dipstick until the top of the threads is resting on top of the hole to check the transmission fluid in a Harley.

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How much oil goes in a Harley primary?

Fill the primary with oil Harley Davidson Softails require one quart of primary fluid. Be sure to check your owner’s manual or the AMSOIL Product Guide for the correct primary oil capacity for your bike.

How often should you change the primary fluid in a Harley Davidson?

Oil changes as per Owners manual every 5k Miles, Tranny and Primary every 10K. If you ride it more you’ll be changing it more often.

What viscosity is Harley transmission oil?

The oil viscosity is measured in centistokes (cST) at 100°C. Note that different scales are used to measure the viscosity of motor oils and gear oils. That’s why the 20W-50 motorcycle oil’s viscosity is so close to that of the the SAE 110 transmission fluid.

What kind of oil do you use in a Harley Davidson transmission?

For the record, AMSOIL recommends AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil in the engine, transmission and primary chaincase on most Harleys (consult our Motorcycle Product Guide for specific recommendations).

What happens if you overfill Harley transmission?

The main thing that will happen if you slightly overfill the trans is that some fluid could be blown out the vent tube when hot.

Can I use 20w50 in my Harley transmission?

Which choice is better for Harley-Davidson transmissions? A particularly nice feature about AMSOIL 20W-50 Synthetic Motorcycle Oil is that it can be used in the engine, transmission and primary chaincase of Harley-Davidson motorcycles.

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