Hi all, I have a 67 reg 4 ride which has 2600 miles on & was wondering if you guys & girls had any knowledge of adjusting the valve clearances cos it sounds like it might need a small tweak here & there. I think I’m at the sort of mileage now where it needs it . I hope the job is not too far out of my ability though ! 
Thanks in advance 

Had to do it with every 4RT I owned, usually needs adjustment within 3 to 5 years of use, first symptom will be hard to start.  It gets easy after the first time but you have to be very precise with your adjustment and verify the feeler gauge with a micrometer.  The head of a red Robertson screw is the same size as the adjuster so you can improvise a tool out of a screw stuck in the end of a wood stick.  You need to remove the engine or at the very least lower the front part of the engine from the frame to access the adjusters easy.

Thanks Lemur. That sounds probably too tricky for me to tackle. Are there any manuals about that I could study ? 
There’s no symptoms at the moment regarding starting cos she fires up very easily. 
it’s just that I can hear a slight ticking when she’s cold or warm, doesn’t make a difference. Perhaps I’m being over sensitive with it . I could do with hearing an another bike to compare it . 
Thanks for your input

Ticking sound is not a symptom, the clearances tighten with wear.  There is a tiny decompressor on the exhaust valve to aid in starting but you would never hear it, it's way too small. I own trials bikes in pairs so trouble-shooting is always easy.

One of the nicest 4-stroke engines ever.

You should do a compression check on the engine when it is still new and record that as a baseline for future reference.

Thanks very much for your help & knowledge. That’s a great idea with the compression test 👍. 
Yes, they are certainly a great engine . I look after it  religiously with plenty of oil changes etc & it’s really faultless.

I’ve recently got rid of the ***** front pipe & put a Titanium Mitani on & it’s transformed it with more bottom end & sounds better too . 
Cheers

 

 

 

Don't use solvents on the big connector attached to the throttle body it can dissolve the blue silicon sealant looking stuff, but if the bike ever acts up and it's not a bad spark plug check that connector for water.

Good tip , thanks