CB750 Barn find project - First Timer

[Underdog1]

Been away for a while, managed to grab a quick 30 minutes in the workshop.

Got the pesky roll pin out. As recommended by trigger I tapped it and yanked it out



Refitted the kickstart correctly. Everything works as it should but half the little ledge the spring sits on is gone.



Going to take it to get a blob of tig weld on there tomorrow. Doesn’t need to be particularly pretty as there’s plenty of clearance around that area

[Underdog1]

So had a bloke in town put a blob of weld on the broken kickstart spring retainer thing for a few beer tokens. Ground it down with a dremal at home, looks like it will do the trick



Spent most the day scraping old hondabond off with a razor blade trying not to have any fall into the cases. Very boring task! Reapplied the hondabond and closed the cases.

Was struggling to get the gear selector mech back together when I saw this



So annoying! Was probably due to the gear selector dogs not being seated correctly. Had to open up again, spend another eternity prepping the cases and then closing them again.

Got there in the end thought, can hopefully have the lump back in the frame tomorrow

[Nurse Julie]

Great, fingers crossed all goes well this time. Just checking.....you did clean out all the swarf after your re modeling with the dremmel ?

[Underdog1]

Great, fingers crossed all goes well this time. Just checking.....you did clean out all the swarf after your re modeling with the dremmel ?

Yeah I covered everything with cling film to stop it getting places and then wiped out where needed

I’ve heard these babies run well on swarf anyway

[Underdog1]

Made a lot of progress over the last few days, got the engine back in and built the bike back up, getting oil pressure light go out  now after 10 kicks or so which I’m happy with.

Just been doing the points gaps and timing , think I’ve got it as best as I can. Filled some fuel in a remote tank and tried to fire her up but not getting a spark. Condensers were working before strip down.

Any common things I should be checking? I’ll recheck that something crazy hasn’t happened with the points gaps tomorrow, happy with progress but I’m unsure what to look at regarding the sparks

[hairygit]

Obviously start with checking all wires you have disturbed, and the connectors are clean and tight, especially the ones where the leads from the points join the main harness, where the rear brake light wires also join the loom. I assume the engine kill switch on the bars is set to the centre position (run)If after that you still get no spark, test for 12v + on the blue then yellow points wires, using the points plate for the 12v - lead. you should get 12v there with ignition on and kill switch in run position.

[Underdog1]

Obviously start with checking all wires you have disturbed, and the connectors are clean and tight, especially the ones where the leads from the points join the main harness, where the rear brake light wires also join the loom. I assume the engine kill switch on the bars is set to the centre position (run)If after that you still get no spark, test for 12v + on the blue then yellow points wires, using the points plate for the 12v - lead. you should get 12v there with ignition on and kill switch in run position.

Thanks mate will work though that in the morning and see where I’m at   

[Nurse Julie]

Wow, oil pressure at 10 kicks....thats bloody amazing, well done.

[Trigger]

Made a lot of progress over the last few days, got the engine back in and built the bike back up, getting oil pressure light go out  now after 10 kicks or so which I’m happy with.

Just been doing the points gaps and timing , think I’ve got it as best as I can. Filled some fuel in a remote tank and tried to fire her up but not getting a spark. Condensers were working before strip down.

Any common things I should be checking? I’ll recheck that something crazy hasn’t happened with the points gaps tomorrow, happy with progress but I’m unsure what to look at regarding the sparks

How are you going to run the wires for the number light ? I had to run mine inside the swinging arm so not to snag anywhere.

[Underdog1]

Made a lot of progress over the last few days, got the engine back in and built the bike back up, getting oil pressure light go out  now after 10 kicks or so which I’m happy with.

Just been doing the points gaps and timing , think I’ve got it as best as I can. Filled some fuel in a remote tank and tried to fire her up but not getting a spark. Condensers were working before strip down.

Any common things I should be checking? I’ll recheck that something crazy hasn’t happened with the points gaps tomorrow, happy with progress but I’m unsure what to look at regarding the sparks

How are you going to run the wires for the number light ? I had to run mine inside the swinging arm so not to snag anywhere.

I’ve got one I can fit but after seeing that it’s not an MOT requirement (despite the bike being MOT exempt) I haven’t fitted it yet. Granted that an MOT doesn’t cover all legal requirements if I do put I on illprobably just zip tie the cable on the inner side of the swing arm rather then drill just for ease

[Nurse Julie]

It is required for an MOT and I think it also comes under the C&U (construction and use) regs.
Just because you don't need an MOT you still have to make sure the bike is safe and roadworthy and it won't be either without an illuminated number plate. Read these new MOT regs, digest, learn and comply. Just because you are not getting it tested, doesn't mean you can ride / own an unsafe bike. Use the new MOT regs as the MINIMUM level to aim for.

https://www.mot-testing.service.gov.uk/documents/manuals/class12/

[Nurse Julie]

Here is the specific part you need to comply with, copied from the regs.

The rear registration plate must be lit. Most motorcycles will light the registration plate with a rear position lamp, but some will use a separate registration plate lamp.
Some registration plate lamps may be fitted behind the number plate.

[Underdog1]

Here is the specific part you need to comply with, copied from the regs.

The rear registration plate must be lit. Most motorcycles will light the registration plate with a rear position lamp, but some will use a separate registration plate lamp.
Some registration plate lamps may be fitted behind the number plate.

Yeah no dramas thought there was something out there covering it but I saw this https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/449526/mot-inspection-checklist-motorcycle-vt29m.pdf and thought I wouldn’t need to bother

Like I said I’ve got one to go on anyway

[Nurse Julie]

Yes, that's just a check list used as a reminder to the MOT tester of what parts he/she needs to look at on an MOT. It's not a list of what's required and what's not required to get your bike through an MOT.

[Nurse Julie]

BTW, bikes looking great but the drive chain looks very, very tight, needs about 1" play in it.