Hey no wurries Lulu ask away
After all I wasn't born with all this rubbish about motorbikes in a brown paper packet attached to my hip
Some of it I had to ask about, some of it I read about and I had to learn a lot of it the hard way
If I don't pass it on before I "go" I wouldn't be much of a biker and it would all go to waste
So, to business
1st, it's great that you had the sense to get a "Haynes"
Whilst they aren't the "bible" that some think they are, they DO contain a lot of very useful information
Now I have to "assume" (never a safe thing to do
) that your bike has a centre or main stand ?
It makes checking and adjusting the chain tension much easier
When the bike's on the stand the weight is off the wheel and therefore the chain (hopefully) and the rear wheel should be clear of the ground
(If not put a flat thinnish [1"] piece of wood under the stand to lift the rear wheel up, by either putting the stand feet onto the wood and then getting it up on the stand, or tilt the bike slightly and getting 1 foot of the stand on the wood, then tilt it the other way with the stand resting on the wood and either kick it under the other foot or just spin the bike a little to get the other foot over the wood and lower it onto it)
Sounds complicated but if you stop and think for a moment you'll realise its quite simple really
Anyway, once the wheel is clear of the ground you can proceed to check the chain
First thing, is to check for "tight spots"
(there shouldn't be any but if there is this is the point on it, where you need to check the tension)
Again I have to "assume" that there are NO tight spots
The "TOP" run of the chain is the one you need to keep an eye on
No good waiting till the bottom run is hanging down in a saggy arc cos it's way too slack by that stage
On some bikes the top run of the chain is "hidden" by the chain guard and it's difficult to see the chain but they (chain guards) are usually fastened by a bolt at the back to the "swinging arm" (which the wheel is fastened into) so removing this bolt will give you a clear sight of the chain if you lift it a bit
The chain should have about 3/4 " (or metric equivalent) of TOTAL movement UP and DOWN
It shouldn't be like a "fiddle string" as that would put a lot of strain on all the bearings in the gearbox and the wheel
Remember that when the weight goes back on the rear of the bike, some of the "slack" will be "taken up"
I'm trying to be as "general" as possible to include those other folk who may be reading this
The weight of the rider plus the weight of the bike will mean that different bikes need different settings
(IE heavier bike/heavier rider will take up more slack)
Remember what I said about tight spots, and re-check the tension "after" you have adjusted it
Most modern bikes have "graduated adjusters" at the rear wheel spindle either side and these can be used to ensure that the wheel stays "in line"
BUT, as a good "aid", looking along the top run of the chain from the rear to see if it is in a "straight line" is agood idea, as sometimes the adjusters "tell lies"
If any or all of this doesn't make sense
Don't be afraid to ask for clarification
Best of luck Lulu, it's great to know that you want to take of your bike and if you maintain it you'll you'll not only enjoy riding it more in the knowledge that its working efficiently
You'll save money too, on servicing costs and fuel costs too
I hope this helps