Question about 1995 Yamaha YZF 750 R

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Exup valve location,is it on the engine or exhaust headers??? i know the servos under the seat,

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Hi I believe the valve itself is in the exhaust,mid section where pulley controls are,hope this is helpful :)

Posted on Dec 08, 2009

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I'm not familiar with that bike, but you can download a free service manual at
http://www.yamaha-motor-europe.com/community/service/manuals.jsp

Posted on Nov 21, 2009

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1 Answer

2000 r1 exup valve


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 $0 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.
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May 23, 2014 | 2000 Yamaha YZF-R1

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2000 r1 exup


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 $0 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.
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May 23, 2014 | 2000 Yamaha YZF-R1

1 Answer

Sometimes my FZR 1000 runs great but then sometimes it is powerless and backfiring ....what should I check or look into fixing?


back firing , can mean a lean (popping on deceleration) or a rich mixture backfiring a lot , . check your connections at the headers and your carb to engine , and carb to airbox ... air is getting in , . look at your air filter .... look at your exhaust for blockages ... if this is the exup (power valve ) model then check the valve actuator , as it can lock closed , ... either remove it or wire it open

May 23, 2014 | 1990 Yamaha FZR 1000

1 Answer

2005 yamaha R1 Code 17 Exup servo


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 $0 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.
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Jun 06, 2012 | 2005 Yamaha YZF-R1

1 Answer

HI THE SELF DIAGNOSIS ON MY R6 2006 AS COME UP WITH ERROR CODE 18 COULD YOU TELL ME WHAT THIS CHEERS STU


Your EXUP is the butterfly / valve that is in-line between your center muffler/Cat and the stock exhaust can. It is controlled by cables from a servo motor under the tail / behind the rear shock.

The EXUP errors (17 and 18) are because:

1. you removed your EXUP servo and/or valve when you installed your exhaust.

2. your EXUP valve is stuck / cables are seized up

3. your wiring harness is disconnected from the servo motor.

Jul 15, 2011 | Yamaha NC 110 Motorcycles

1 Answer

1997 Yamaha YZF Thunder ace 1000 R EXUP valve not working


Hi, Rosiemowatt1 either that or a wiring issue 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 zero $0 you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Apr 06, 2011 | 1997 Yamaha YZF Thunder ace 1000 R

1 Answer

I have a thunderace and the rev counter keeps jumping from 0 t0 7000 revs


7000 rpm is a self diagnostic code that either your exup valve is not being detected or the valve is locked up and not moving. If you put a header on your bike and took over the exup valve servo motor, you are going to have to put it back on. It also changes the mapping of the ECU and will not let it rev to redline when the Exup servo motor is missing.

Oct 06, 2009 | 1997 Yamaha YZF Thunder ace 1000 R

1 Answer

Check engine ight came on and 18 pops up


#18 is the EXUP servo motor
If you have installed an aftermarket exhaust slip on and you have removed the stock cables you still have to leave the servo motor on the bike connected to it's plug.

Jul 02, 2009 | 2007 Yamaha YZF-R6

2 Answers

IV GOT A 2007 R1 SHOWING AN ERROR CODE 17 ANY IDEA


The error code 17 means you have a malfunctioning EXUP exhaust valve, or EXUP servo motor. It could be that your servo motor has fried, could be that some wires got loose, or it could be that your exhaust valve just needs a good cleaning and lubricating, if it's had a hard life.

Jun 15, 2009 | 2006 Yamaha YZF-R1

4 Answers

Yamaha 2001 r1 been stood for 2 yrs ;got back on road ;rev needle keeps going from 0 rpm~~7000rpm all the time;bikes runs but must of lost half the power of the bike ????


Hi There,
Got this from my copy of the Yamaha workshop manual for this model

The YZF-R1 features a self-diagnosing system for the following circuits:
1. throttle position sensor
2. EXUP
3. fuel level indicator light
if any of these circuits are defective their respective condition codes will be displayed on the tachometer when the main switch is set to "ON" (irrespective of whether the engine is running or not)

1. throttle position sensor a) Disconnected b) Short-circuit c) Locked 0 - 3,000rpm
2. EXUP a) Improper connection b) Short-circuit c) Servomotor is locked 0 - 7,000rpm
3. Fuel level indicator light a) Improper connection 0 - 8,000rpm

It looks like you have a problem with the EXUP Valve on yours, probably seized or maybe cables not moving freely
Hope this Helps

Apr 25, 2009 | 2001 Yamaha YZF-R1

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