SOHC.co.uk Forums > CB350/400

Engine oil use?

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Green1:
Hinkley Triumphs are the only bikes I can think of were you wind the dipstick in.

K2-K6:
As Julie indicates, knowledge of piston sequencing will allow placing them correctly.

If you take off the right side timing cover and look for timing marks you'll see a T mark by either 1/4 and 2/3,  this indicates those pistons numbered are at the top of the barrel.

If you turn it to either one of the T marks ( it's not critical which numbers you start with as it will produce the same result from either) then further by 90degree,  all the pistons will be half way up the barrels to let you put something in.

Looking at the timing marks you'll end up half way between any of the marks to confirm position.

Bradders:
Thanks for your replies Julie and K2-K6. Do I use just the normal engine oil? Can I use the plug spanner in the bike toolkit to get the middle plugs out without moving the tank? It looks very short of room there.

K2-K6:
The centre plugs can be done with std spanner and without removing anything else,  but it's always very fiddly on these engines with access around those centre two.

Opinion is going to vary  ;D on what to put in it,  I'd try with neat reddex at first to see if you get any effect.

Nurse Julie:
Yes, normal engine oil or Redex as Nigel suggests. It is awkward to remove the middle plugs with the tank on until you get the knack, even more difficult to get them back in. As you are going to have bike standing for a couple of days after doing this, I think it would be easier for you to remove the tank. Just pull the rubber pad back at the back of the tank, remove the fuel pipe to the petcock pull tank back and lift off. It will also be easier for you to get the oil down the spark plug ports without the tank on.

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