Question about 1989 kawasaki GPX 250 R

1 Answer

Im adjusting the tappits on the motor

I havent started yet and I dont have a manual.

So I would like to know: a What type of adjusters are they. b What is the gap size to adjust to. c And is there any other things to watch out for on this model

Any advice would be gratfully accepted


Posted by on

  • Gillyguts Nov 29, 2008

    Thanks Acetycholins. I couldn't have hoped for better advice.

    all the best Dude!


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

They're not tappets--you can adjust them with a wrench and a set of feeler gauges. Here are the clearance measurment numbers for intake and exhaust:

  • 0.08mm - 0.13mm for the intake valve clearance
  • 0.11mm - 0.16mm for the exhaust valve clearance

There is much more helpful information on this web page:

Click on the link "How do I adjust the valves?"

You will also find lots of valuable information on your GPX 250 (called a "Ninja 250" or "EX 250" in America) on this web site:

Good luck!

Posted on Nov 28, 2008

  • acetycholins Nov 28, 2008

    Hi Gillyguts,

    I found a manual online. You can download it for free using bit torrent from this site:


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Anyone k how to set the fuel and air screw on 84try zinger 60cc 3wheeler carberator ?

As long as you know where the air bleed screw is, then do the following; Screw the screw in until it goes no further, (dont force it). Wind the screw out for about 1 and a half turns. Start the motor, you may have to adjust the throttle stop screw t keep the motor running. When the motor is running (at a fairly slow tick over) adjust the air bleed screw outwards a turn or so, if the motor goes faster then your turning the right way, if not, then screw in a bit. What you aim to do is to get the motor running as fast a tickover as possible. When the moto speeds up adjust the throttle stop screw to keep the tickover at a slow speed, It's as easy as that, this setting should be finally made again when the motor has fully warmed up (as the cold start may be in action if the motor is cold).Good luck

Jan 14, 2014 | Motorcycles

1 Answer

1993 cb250 wont start

What did you adjust the valves to?

On your bike, the adjusters are adjusted when the motor is stone cold, and there is a prescribed gap (checked with a feeler gauge) between the valve adjuster and the end of the valve.

This gap is in the manual (along with the torque you're asking about), which is only $31.95

Dec 05, 2013 | 1993 Honda CB 250 Nighthawk

1 Answer

When im stopped the bike feels like it is trying to go

You should adjust your clutch lever. I dont think you are getting complete release. Over time, the cable will stretch. That is why there is a thumb adjuster on the cable. Do not over tighten. Slippage is just about as bad as not releasing completely.

Your owners manual should be able to give you more information on the adjustment. If you dont have one, you can probably get one from the manufacturers web site - which I would give you had you mentioned the make. Still, you can fix this yourself by simply adjusting the cable.

Thanks for your interest in

Dec 01, 2012 | Motorcycles

1 Answer

I have a 2002 suzuki 1400cc and I am wanting to replace the clutch becasue when it gets hot the bike won't pull its self. It has 12k miles on it and the clutch works well enough when cool, but stops...

Please dont be offended but i ride and know a clutch should last for many many more miles. Have you properly adjusted it. If im not mistaken its a mechanical clutch and its easely adjusted at the cable. Good luck

Aug 17, 2011 | 2002 Suzuki VS 1400 Intruder

1 Answer

How do you adjust the valve clearance on a ybr125

take the cylinder head off take off the 2 caps at the top of the cylinder head . there you should see the top of the tappit and an ajustment bolt.get a feeler gauge you then need 2 open a vaulve by turning the cam sprocket ( remove rocker cover held in by 2 wratchet bolts left side top of engin) once valve is open ajust gap by turnig the bolt nt5ill u reach the right spacings sorry carnt tell you the spaceings dont know myself ask jeves of somwere like that should tell you though good luck is fun trust me

Jun 16, 2010 | 2007 Yamaha Ybr 125

1 Answer

Clutch adjustment

definately slipping. Have enough free play to allow full engagement? Most important is the oil the right type. wet clutches don't like standard motor oil.

Jun 19, 2009 | 2000 Suzuki GS 500 E

1 Answer

Cluch slips

I dont have a manual for that bike, but i think there is an internal clutch adjustment that may help. if not properly set, the clutch will slip under a heavy load. if it does have the adjustment, it will be on one side of the engine and it should look like a 10 or 12mm nut with a set screw. loosen the nut and adjust the set screw one way or the other until there is NO tension on the screw. tighten the nut and then re-adjust your clutch lever for proper free play. if that dont work, install high performace clutch plates. again, im not certain that bike has the internal adjustment. take a look. hope this helps...

May 27, 2009 | 1981 Yamaha XJ 650

1 Answer

Valve adjustment

Hi brookeside14
Not sure what the Merc marine motors are like, but this style of motorcycle engine  are twin overhead cam with bucket and shim type adjustments valve lash adjustments. Best way to tell you to go about this is to download a full manual from here, it has detailed procedures and everything you need to know to set the valve adjustments. Thanks for using FixYa, a FixYa rating is a great reward for my time to get this info to you. Cheers
regards robotek

Jan 23, 2009 | 2001 kawasaki ZX-12R

1 Answer

Will not restart after being warmed up, it starts easy when cold.

those symptons sound like too rich , air filter clean , plugs dirty

nothing blocking the air intake make sure the valve clearances are as per manual

burnt valves ?

get a compression test done

Dec 31, 2008 | 2006 KTM 560 SMR

Not finding what you are looking for?
1989 kawasaki GPX 250 R Logo

504 people viewed this question

Ask a Question

Usually answered in minutes!

Top kawasaki Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4481 Answers

Angelo Stewart
Angelo Stewart

Level 2 Expert

224 Answers


Level 3 Expert

61168 Answers

Are you a kawasaki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides