Harley Davidson should certify the transmission fluid you use on your tranny. For instance, you can use Red Line 42804 V-Twin transmission oil. The trans fluid ensures that you have a smooth shifting of gears.

Fill the transmission with fluid Use the 3/8-inch ball-end Allen wrench to remove the transmission cover and dipstick. Use a long-necked funnel to install the transmission fluid. Be careful not to overfill the transmission. Check your owner’s manual or the AMSOIL Product Guide for the correct fluid capacity.

A: BAKER recommends Spectro Heavy Duty Platinum 6 Speed Transmission Fluid (75W140) for all factory and BAKER 4, 5, 6 and 7-speed applications. If Spectro cannot be found, use a gearbox grade oil or in a worst case scenario, differential (85W90) fluid.

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.

AMSOIL Offers Superior Protection And Performance

Answer. 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.

We submit that ATF is too thin for Harley primary use. It’s true that many Harley riders have had years of problem-free performance with ATF. We contend that a thicker oil will provide superior metal-to-metal wear protection. Chains and sprockets will last longer using a fluid with an appropriate viscosity.

When filling the transmission, use Harley-Davidson TRANSMISSION LUBRICANT (Part No. 99892-84 (qt.) or 99891-84 (gal.)). The transmission fluid capacity is approximately 24 ounces (0.71 liters).

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.

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.

The primary drive consists of an engine output sprocket (attached to the crankshaft), clutch assembly, roller chain (or belt) and usually a housing that encloses the entire assembly. The purpose of the clutch is to engage the primary drive to the transmission.

Service Schedule for Harley-Davidson® Motorcycles

• 500 MILES. For Springer Models FLSTS & FXSTS: As stated in the owner’s manual, FLSTS Heritage Springer Models should have a front end adjustment at 500 miles.
• 1000 MILES. Change engine oil & oil filter.
• 2500 MILES. Change engine oil & oil filter.
• 5000 MILES.
• 7500 MILES.

Harley-Davidson 1,000-Mile Service Checklist Inspect engine oil and filter. Inspect oil lines and brake system for leaks. Inspect air cleaner and service as required. Check tire pressure and inspect tread.

they stated that “big v-twins 1000 mile service cost $379.

Let’s get down to business on the 5,000 Mile Checkup, it includes: Replace Engine Oil and Oil Filter. Inspect Brake System: brake pads, discs, oil lines, fluid reservoir. Inspect Air Filter: service as required. Review Tires: pressure, tread, tightness of wheel spokes.

They buy them for aggressive riding and sharp handling. For sports bikes, 25,000 miles can be a lot. Harley-Davidson® motorcycles are built to last much longer. If a bike has good maintenance records, no signs of damage and no oil leaks, even a bike with 40,000 to 50,000 miles can be expected to last a long time.

If you have the service done at a Harley-Davidson dealer, typical costs are in the $300-$400 range, assuming no repairs are needed.