YamaDude

Thanks for this info, Feetup. It was informative. I also benefited from your detailed responses in 2018 to questions about timing the TY250A.

I just did a top end rebuild on my '74 TY250 and it is running great. Wanting to make sure all of my settings are correct, I checked my original Yamaha 1974 TY250 service manual (Copyright 1974) for the spark plug gap for the NGK B-7ES. In the specs section, page 4, it says 0.4 - 0.5mm But on page 29 it provides 0.5 - 0.6mm as the plug setting. Trail & TrialsUK sells the B-7ES plug with the notation 0.3 - 0.4 mm plug gap for a points ignition, which I have. A google search did not provide me with any other sources. What say you, and what's the source of your info? Thanks

Yes, Thanks Tony27, thats what I have been thinking, judging from the nice photo you posted of your pump area. Your engine is configured differently. I've already blocked the intake manifold hole nicely, too. I appreciate the assistance ! Dude

Hello Fellas, I joined this cool community recently and am enjoying seeing all the nice bikes and chatter. I have 6 vintage bikes, including a 1974 TY250 in nice running condition. Also four Yamaha Xs650's from the 70's and 80's, and a 1969 Triumph Bonneville in my living room. I restore bikes. I'm looking forward to getting involved in the discussions. I've already posted an inquiry in Twinshocks about removing the autolube; hope to get get some replies to it. Dude

Hello, I'm a new member from Syracuse NY. I have 6 vintage Yamahas and a 1969 Triumph Bonneville. Here is my '74 TY250 which I adore. I do all my own work. I just posted a question regarding the TY autolube in this forum. Dude

Hello Gents, I have a '74 TY250 in good running condition. I am in the process of going to pre-mix with it, and therefore removing the autolube pump. I pulled the pump today, and the pump drive shaft came out with it (see attached picture). So, it seems that all I need to do now is attach a block-off plate (I've studied this procedure, and I will be fabricating one) on the case, am I correct? Or do I necessarily need to pull off the engine side case and remove other bits, such as a gear, which was suggested in a previous posting. Not sure what gear that would be, although that member (Tony 76) had a '76 TY250, which appears to be configured differently. Thanks in advance ! Dude

Hello Gents, I have a '74 TY 250 in good condition. I am in the process of going pre-mix with it, and therefore removing the autolube pump. I pulled the pump today, and the pump drive shaft came out with it (see attached picture). So, it seems that all I need to do now is attach a block-off plate (I've studied this procedure) on the case, am I correct? Or do I necessarily need to pull off the engine case and remove other bits? Thanks in advance !