RD400D little plastic gear

[hardhatharry]

Slowly building this RD400D engine up but a bit stuck again.

The little plastic gear off the rev spline I seem to have 3 different ones to choose from a small one with 2R9 stamped into it, a medium sized one which has 2BO stamped into it and a large thick one with 1A0 stamped into it, which one should I use?



Also the large gear of the gearbox looks wrong not like the one in the Haynes Manual and doesnt have a gear underneath it to connect to the kickstart



Should it be this one?

[arrow]

Not too sure, but its not the 1AO gear. That one is for the oil pump worm.

[hardhatharry]

discontinued too, I see trouble ahead

[arrow]

Aug 6, 2016 19:44:32 GMT 1 hardhatharry said:

discontinued too, I see trouble ahead

What is?

[hardhatharry]

the tacho gear

[arrow]

Ok. You have a choice there, and only on will fit correctly with the other gears??

[hardhatharry]

Yes but none are the 1A0 21 tooth one unfortunatley

[arrow]

1AO 21 tooth is the wormshaft gear.

[hardhatharry]

Managed to get one from the US along with the other gear that looks wrong too.