Question about Yamaha YZ 450 F Motorcycles
Hi .ihave an 08 yz450f, i drain the oil in three places with the dipstick removed, it seems to take close on 2 litres of oil, i start and run it for a minute before checking , is that normal, thanx , davie
Posted by Anonymous on
Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $10 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Oil Change YZ450F
2007 2013 Yamaha YZ450F Service Repair Workshop Manual Download Manuals...
OEM parts for Yamaha
Posted on Sep 27, 2016
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: oil change 1999H D Electra glide
The plug ( 3/4 wrench ) under the trans when your looking at the trans cover ( right side of the bike ) is the trans. If you drained that replace it with 24 oz. of either HD trans fluid or I prefer Golden Spectro 75/140 ( much better shifting on a Harley ( trust me you'll never go back to HD trans fluid ) the drain for your motor oils is on the same pan ( on the bottom ) but it's the plug facing the front of the bike. Looks just like the trans plug. Both use a 11105 o ring which you should replace everytime ( just for piece of mind as well as leaks ) you need 4 quarts of 20/59 HD oil. Hope it helps.
Posted on Jun 27, 2009
are you sure you didnt drain the primary case oil they usually hold a little less than a quart.. dont run it until you make sure or you could burn clutch and primary chain up.
Posted on Aug 02, 2009
BAD CASE SEAL, SORRY BUT U R GONNA HAVE 2 GET OUT DA WALLET AND BUY A REPAIR MANUAL 2 GET PROCEDURE AND SPECS 4 UR BIKES THE GOOD NEWS IS IT HAPPENS ALL DA TIME AND DA REPAIR IS PRETTY STRAIGHT FORWARD. THE COST OF DA MANUAL WILL TAKE CARE OF ITSELF MANY TIMES OVER WITH SELF MADE REPAIRS
Posted on Oct 04, 2009
SOURCE: yz450f that quit running
Yes, it does have an automatic decompression mechanism. It is a centrifugally operated mechanism and it is EXTREMELY unlikely that is causing your problems.
The two highest probabilities are:
1. Fouled spark plug. Forget what it looks like, put a BRAND NEW plug in. It is the cheapest form of diagnosis you can do. These bikes are terrible about fouling spark plugs and a fouled plug produces the exact symptoms you described.
2. Inspect your valve clearance. Tight valves will also make the bike hard/impossible to start with the kick starter. In some cases, it can be push started, but still won't kick. With tight valves, the bike, although hard starting, will run pretty good, for awhile. Eventually it will burn the valves and quit running though.
If your bike isn't kick starting fairly easily, something is wrong and needs to be addressed. The only other issue is making sure the idle speed is set per the service manual. These bikes have a fairly high idle, some as high as 1700 rpms. If it is set too low, it makes them hard to start too.
Posted on Oct 05, 2009
If we are talking about a 2004 YZ450F, you should always run the engine before taking an accurate dipstick check. This is a dry sump engine with the oil stored in the frame. The dipstick is located up high on the frame. You are not checking the oil level in the crankcase as the "Best Solution" dipstick suggested. In theory the oil is held up in thank when the engine is not running. However, most all of them have a tendency to have oil seep/leak out of the frame reservoir down into the crankcase. There is a check ball in the right crankcase cover that usually leaks if the engine has any hours on it at all. The dipstick up on the frame rarely reads accurate unless you have started the engine and let the oil pump circulate oil back up into the frame where it can be measured on the dipstick. Any mechanic who has had hands on experience knows this. The same is true for owners of dry sump XR's and Harleys, who all know to run the engine before final oil check. If you are going to to answer a tech question you need to have some experience with that model instead of your XR80.
Posted on Feb 16, 2010
Testimonial: "Thank you HIGH COMMAND! I really appreciate the advice on how to deal with this issue. It was the only reponse that made sense."
Tips for a great answer:
Jan 04, 2014 | Yamaha YZ 450 F Motorcycles
Jun 13, 2013 | Cars & Trucks
Jul 18, 2011 | 2005 Yamaha Road Star Midnight Silverado
Apr 16, 2011 | Poulan "Poulan" Push Mower
Mar 06, 2011 | 2004 Suzuki GSX 750 F (Katana)
Nov 01, 2010 | Volkswagen Polo Cars & Trucks
May 22, 2010 | 2003 Yamaha WR 250 F
May 17, 2010 | 2004 Yamaha YZ 450 F
Apr 13, 2010 | 1996 Mazda 626
May 02, 2009 | 2004 Yamaha TT-R 225
11 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: