Question about 1999 Yamaha YZF-R1
Hi, Tom and the usual suspects are:
1. Low coolant level.
2. Restricted radiator air flow.
3. Faulty thermostat.
4. Coolant pump or fans inoperative.
5. Vent hose crimped.
6. Air in the coolant and needs bleeding.
7. Engine idling too long or bike moving too slow.
8. Coolant too old needs to be replaced.
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.
R1 Overheating what could be the reasons
1998 1999 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha
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Posted on Sep 05, 2016
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Posted on Jan 02, 2017
YZF600R is a carbureted model. OIL: The oil sight glass is a round window, low on the right side. Very hard to try to see when astride the bike, even if you use a mirror on an extension rod. Have a friend hold the bike level,perhaps, while you check. Oil should be sighted after the bike has been sitting for a time after riding. I suggest using a good 10W-40 regular motorcycle oil (Least expensive around here in Boston is to buy Kawasaki by the gallon at Riverside) I found the pesky 1st-to-2nd shift to be more direct with this oil than with synthetic. I had plenty of opportunity to compare the two types. GAS: No reserve, but as noted, there is a low fuel light, in the row of lights that includes the neutral light and the high beam indicator. You ought to be getting over 50 m.p.g., so you can estimate your 'range' from that. I usually fill up again around the 180 mile period. I think I've seen the low fuel light once in 6 years of ownership. OH: I suggest you treat the gas, on a regular basis, with 'marine' Stabil, not the regular stuff. I have had a 'gummy' Yamaha Virago 250 to care for, that I thought would never clear its fuel problems. Last winter ('08-'09) stored it with the marine Stabil in the tank and run for a while to get it into the carbs also. Within a few minutes of running it this spring-actually a couple weeks ago- it smoothed out and has run fine since. I believe this HAS to be as a result of the treatment of the fuel (run through the carbs before the winter storage) with this special Stabil. It was recommended by Carlo at Riverside- I'll have to remember to thank him for the advice. N.B. I always change the fuel (siphon it out, put that Stabil'ed but 'old' stuff into my car tank, refill the bikes with fresh 93 octane) each Spring.
Posted on Aug 17, 2009
You should have a site glass on the side of the motor down low along the frame rail. You will need to have the bike set strait up and down to get a reading so have a friend hold it up right for you. The oil level should be inbetween the top line and the bottom line that is on the case beside the site window.
Posted on Sep 17, 2009
there is a sight glass about the size of a nickle directly below the filler plug ,oil level should be midway or close to the top,you should see the oil level in the glass window,if not you'll have to remove the cover and clean or replace the sight glass window....
Posted on Apr 08, 2010
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