GPZ 900r only getting first gear

[123luvaman]

does any 1 have any ideas as to why or any tips that could help me the engine is a newly rebuilt engine many thanks

[TLS-Moose]

Hello and welcome to SWB

It's generally considered polite to go to the "introduce yourself" section first



I would guess the gearbox has not been installed correctly - selector drum/forks perhaps but there are a myriad of other things ..... clutch locked up, gears not assembled on shafts correctly, e5tc., etc., ... you need to give some more details of what it's doing (or not) really

[123luvaman]

sorry im anthony first big bike iv had well i can pull the selector up but its like like a free moving space no gears atal wen the bike is running or not running i can push down to select 1st but thats all it does and cheers for replying many thanks anthony

[delvey91]

this sounds like a specialty for tom91, he only has first gear aswell it would seem

[delvey91]

Are you moving when you try and select 2nd? I know on some kawasakis the have a neutral only function at standstill and wont select 2nd.

[123luvaman]

yer its a 1988 gpz900 tryed moving and still and tryed with engine off nothing. :S .. ant

[jam]

Kawasaki gearboxes have a system installed so that 2nd gear can not be selected from neutral and can only be selected once the bike is moving. it is 3 small ball bearings in the output shaft that stop 2nd being engaged until the shaft is spinning fast enough to throw the balls out into the gear pinion which then allows it to slide across when selected. It is a common problem that when the bike has been stood for some time the oil tends to gum up a bit and the balls tend to stick, the only solution is to either run some flushing oil through it to see if that clears it, failing that strip the box out again and then remove the 3 ball bearings. Whenever I build a Kawasaki gearbox I remove the 3 ball bearings, as you cannot check the gearbox operation before refitting the motor with them still fitted.

[badgerKDD]

There u go Anthony, told you Jam was font of all knowledge , ( Antony Pm'd me last night with this query and I suggested putting it as a post, as was sure Jam would have the answer!).

[123luvaman]

yer cheers buddy good help im gona get me nabor to do it now im worried ill do sumin wrong lol

[123luvaman]

do i need to take the engine out again to get into the gear box ? cos thats gona cost me another 200 if i do in labor just payed 300 for new engine and then 200 for fitting costs are creaping up lol

[123luvaman]

would any 1 be intrested in helping me repair this problem to get it working ill pay for help lol

[jam]

If you can bring me the motor I'll sort it out for you. My workshop is based in Williton near Minehead. You'll need a set of gaskets, for clutchside and sump and ignition pickups cover, but it's a straightforward enough motor to do. I'm busy at Paignton over the bank holiday weekend with my dyno truck, so you could always drop the motor off to me there, to save you one trip to Williton.

[Banditmax]

Get the bike really hot and throw a can of engine flush in and let it run as per suggestions. Drop out engine flush while engine is still hot fill with new. Probably the cheapest start.

[123luvaman]

im taking it back to the garage that rebuilt it as they said to bring it in this is a problem really that should have been checked before the bike left them but i managed to get em to say bring it up and ill have a look over it thanks for all ur help guys

[123luvaman]

there is a pic of my bik up now