Thanks to all for there advices.
Saturday I found the time to change the oil, filters, spark plugs and spark wires ( the first owner had a Marten living under the hood )
Other than I feelt like I'm in Gullivers travels LOL I have to say I had real good access to all the parts which I changed !
If I had liked I could had used a torque wrench for the spark plugs because there was enough space
Thanks very much ! That's not much torque, a lot of potencial to over torque them and sure then you need good luck !
The current ones are in from factory so I asume they are torqued right