CB750 Primary Chain Check | Setting Points & Valve Clearances | Honda CB750K Bitsa Build | Part 5

CB750 Primary Chain Check | Setting Points & Valve Clearances | Honda CB750K Bitsa Build | Part 5
In this video, I check the Primary Chain for wear, then set the points gap and timing along with resetting the valve clearances.
Tools I used:
Crows Foot Spanner Set: ebay.us/pILeuM
Digital Vernier Caliper: ebay.us/Ty6Haf
Feeler Gauge: ebay.us/WYrdGX
The Primary Chain lives in the heart of the engine and takes the drive from the crankshaft to the gearbox. On a SOHC Honda 750 like this one, it is a duplex chain and has a tensioner to take up any wear.
To check it I have to remove the sump plate then measure the amount that the tensioner has moved using a vernier calliper. I use a new to me tool, a crows foot spanner, which I have seen used by another TH-cam channel, Heidi and Franny’s Garage.
If the measurement gets to 70mm then the manual says the chain should be replaced. Which is quite a big job. This one is at 66mm, and as I believe it starts at 65mm shows that it is in good condition.
I also set the points gap and make sure the spark is arriving at the right point against the timing marks. I then set the valve clearances.
I am getting this engine ready for a first start after a long (probably 30 year) layup. There is a lot to do and I have split it over a few videos so that they are not too long.
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[@mulliedog1]

Nice job!

[@hamzaberrabah4772]

Where is the glitch when I run the engine for a while and travel distances, then turn off the engine and when I start it again, it delays in starting until after a while possible? Answer my friend honda cbx

[@SPANNERRASH]

Poor warm starting is one of the hardest problems to diagnose. In my experience this has usually been caused by a fueling issue. Things to check include, vacuum lock in the tank through a blocked breather, air leaks on the inlet side of the carb, blocked pilot jets especially if it is only one or two of them, changed airfilter type or the wrong size jets if the exhaust has been changed as well. I hope this helps you find the probem. Good luck.

[@hamzaberrabah4772]

The fact that the exhausts are changed, as is the carburetor with holes to enter the air from without the cleaner