hey guys thanks for the help with the very little info i have given. i cant read the model number as its faded and scratched, but here are some pics.the gearbox has MTD stamped on it. i also rang a mower guy and he said i could take the gears out and swap them over, which i have done, and it seems to have worked, but a ball bearing fell out, that at first i thought was from something else, but after putting it all back together and trying it realised it was from the selector bit to hold it in gear. so i'll have to take it appart and hope i can find where it goes. but any other help or suggestions....or even another gearbox smile would be greatly appreciated.
cheers [Linked Image]
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