20 Most Recent 2003 Harley Davidson FLSTF Fat boy - Page 8 Questions & Answers

The drain plug is a hose that comes down to a sprung clamp on the frame behind the gear box on the right side of your bike. Remove from clamp then undo the screw-ring round the hose to allow the plug in the hose to be removed, take lid off oil tank and turn engine over a coupla times to clear engine oil into drainage tank. Replace plug- etc before refilling with half the oil, turn engine over coupla times then add remaining top up oil. Drainage for your primary oil is at the rear inside near the gasket joint and can be removed with a Hex spanner, taking the large outside cover off your primary with star drive sockets to allow airflow for drainage and then to pour new oil in through after replacing drainage plug in the bottom. Buy a Manual Mate, its worth it eh considering the value of your bike?

There are 3 likely causes for this problem.

1. A Fuel Line is to close to the cylinder and is pre heating the fuel causing Vapor Lock. This Then results in the motor dying.
2. A Faulty Coil will present as you describe. The motor will continue to run poorly but the problem will resolve if you shut down the bike and let it cool down.
3. A Faulty Ignition Module will present as you describe. The motor will continue to run poorly but the problem will resolve if you shut down the bike and let it cool down.

I think your problem will be found in #2 or #3.

On the fatboy, the oil drain plug should be on the right side, just under the frame, directly below the oil tank. The primary drain is on the left side under the derby cover on the bottom. The tranny drain is on the bottom towards the rear pretty much centered.
And, as our darlin' little miss piglet said, a maual is worth the investment.

rev sensor could be going bad

Sure sounds like a dead/weak battery. I'd recommened recharging battery or replacing then having both the battery (if you didn't replace) and the rectifier checked to make sure your getting enough cranking amps and voltage to recharge the system. Motorcycle batterys build up sulfer and loose there cranking amps if not left on a battery tender or used frequently over the winter, freezing kills them.

Take it for a nice cruise ....

I have a 05 Fatboy and the drain plug is hidden inside the frame rail on the right side by the swing arm it's a 5/8s plug.

Yes there is a fuse. Generally you will find the fuse box under the seat or behind one of the side panels.

Hello Jim...
Ok, the ignition is stock...
**Have you removed the ignition cover and looked at the ignition sensor? Is resin dripping down the plate? IF so, replace the sensor, but that may or may not rectify this problem.

**YOU CAN Also remove the sensor plate and clean/inspect the pickups on the back of the sensor plate. Be sure to mark/scribe the plate prior to removal so you are back to the same timing.

**Also, check to make sure the


I also need to ask, -does your bike BACKFIRE upon Acceleration?
-does it BACKFIRE upon Deceleration?

And your idle should be set at approx. 950 rpm.

Let me know if the above has been helpful Jim...
-Marko

wow how did that happen , they should have, well you can by a after market kit that comes with the wiring harness for frt and rear. if it was me thats what i would do . that way you can install some costom lights be ready through they are not cheap kdc744

Here's my 2 cents... you need to remove the seat, saddlebags, disconnect battery, dsconnect the wiring harness, remove the signal lamps and the hardware securing the fender. There are torque values u need to know when installing the new one. This is all in the service manual for your model. I would go to the dealer and get one, you want all the specs correct and thats the only way to get em

Yes' mune has two holes that line up when you turn the handlebars to the left to put a padlock through

Question edited for clarity. Question moved from Spanish car maker Seat (See-At) category. All questions on Fixya need FULL 'year make model' please. Some are under the seat, some are behind the left side cover. https://www.google.com/search?q=harley+davidson+fatboy+fuse+box ..

Tools needed to replace a starter:

1. Sockets and wrenches.
2. Screwdriver.
3. Pliers.
4. Battery terminal puller.
5. Drive-on ramps, jack or jackstands.

Question edited for FULL 'year make model'. Question moved to the correct category from 'Fat Motorcycles'. Remove the tanks with fuel pipes. Push a bolt or plug into the open end of the pipes and clamp with a hose clip. Fill the tank and see where the fuel is coming from? The most likely reason is a vibration crack somewhere or a split breather. Other ideas here https://www.google.com/search?q=2013+Harley+Davidson+FLSTF+fuel+tank+leaking ..

Question edited for clarity. Question moved to model category. Please don't type in all CAPS, it is considered SHOUTING and is hard to read. Check out the wiring diagrams and the Harley Forums. https://www.google.com/search?q=1995+HARLEY+DAVIDSON+FLSTF+FATBOY.+WIRING+DIAGRAM ..

Question moved from computers to Harley Davidson. this is all Double Dutch to us. We are in North America and speak English. In ENGLISH Men 1990 fatboy sometimes runs on 1 cylinder. Broken spark plug, ignition or something else Change spark plugs first. https://translate.google.ca/?sl=auto&tl=en&text=Men%201990%20fatboy%20draait%20soms%20op%201%20cylinder.%20Kapotte%20bougie%2C%20ontsteking%20of%20iets%20anders&op=translate ..

Question edited to what I think you meant to say :>D Please ALWAYS include FULL year make model. Spell check before pressing 'Post'. Question moved from EMC Computers category to Harley Davidson. The official way is here; https://www.hdforums.com/how-tos/a/harley-davidson-touring-how-to-reset-your-ecm-413937 My way is here; Disconnect the battery for a couple of hours. Turn the key on, press the lights switch. Turn everything back off. Connect the battery, wait 15 minutes. https://www.google.com/search?q=2010+fat+bob+reset+ECM ..

Sounds like it is operating as it should now. Maybe it was a software update. Why would you want to risk starting it in gear?

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