Question about 2008 kawasaki Z750
I have Kawasaki Z750 2008. Now you can hear mechanical (metal) noise and feel vibrations at low speeds (especially at 30-40 km/h at 2nd gear). When I press clutch levar all the problem are gone. What is it?
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Posted on Jan 02, 2017
There are a couple of possible solutions here: The first is that your clutch may be slipping when the engine gets warm. The second is that either the speedometer may be reading a lower speed once warm or the tachometer may be reading a higher RPM once warm.
IF the clutch is working properly and not slipping the speed of the rear wheel will always remain constant to the speed if the engine - the gear ratios will not change. If the clutch begins to slip it is possible for the engine to rev higher while the rear wheel speed remains the same. Your engine RPM and speed should always be "lock step" with one another when in any gear. To check if the clutch is slipping open the throttle when riding in high gear. The engine speed and motorcycle speed should increase together. If the RPM's rise quickly with no increase in speed this is almost a certain indication of clutch slippage.
Posted on Nov 21, 2008
SOURCE: kawasaki gpz 1000 rx 1987 model
Running well at high revs would indicate that all the fuel and air it needs are getting to the engine and you also have a good spark. Probably no problem with air and fuel filter ( if fitted) or sparkplugs.
Running hot, and bad idling are signs of a lean air fuel mixture. The engine is probably not getting enough fuel at low revs.
This could be caused by an air leak between the carburettors and the engine. Check that the vacuum line to the fuel tap is properly secured at both ends. It is behind the fuel line at the tap.
Get a a short length of hollow plastic tube and use it like a stethascope - put one end to your ear and move the other end around your carburettor mounts with your engine revs as low as you can get, and listen for any sucking noises that would indicate a leak. Look for cracks in the rubber inlets.
The other possibility is that there is an internal blockage in the idling jets or idling fuel circuit. This is where dirt tends to lodge because the jet dimensions and passageways are very fine - The high speed jets are much bigger and dirt often just passes straight through.
Try a little bit of choke while the engine is warm to see if you get a stronger low speed response. If so that would point to an internal blockage.
Posted on Mar 21, 2009
replace your big clutch spring!!!!!!!! a 1000rpm spring. If the spring isn't stiff enough your scooter lose alot of its torque! and the spring loses its stiffness after some time.. that is normal The spring has the same effect as changing back a gear on a motorcycle. try it! I guarentee it.
Posted on Apr 07, 2009
You have found the problem, that saucer spring acts just like the pressure plate on the clutch of a standard transmission on a car. I had to replace one, and it was about $35.00. Good luck
Posted on May 15, 2009
If you're building up vacuum or pressure in the fuel tank, your vent line is pinched or plugged. It is a rubber hose that comes off the fuel tank, usually runs down the right side and discharges vented air out the bottom somewhere.
Posted on Jun 25, 2009
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