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I have always set the level with the cap removed and damper rod and stanchion fully compressed.

75 ml is 66:1 if mixed with 5 litres of fuel,this is the same as 1.5%, make sure it is fully synthetic oil.This is the specification in the manual. 4% mixture is listed for mineral oil.

The washer goes on the outside of the rim over the valve and under the locknut.The raised part uppermost so it sits nicely on the rim. Fitted one of these recvently and they are very good, just put a light smearing of grease in the grove where it fits and the tape will go in quite easily and the grease seals the spokes and prevents air leakage.

Replace the clutch with the competition clutch available from lampkins, it will sort out the screeching, we have done this to all our rev 80's straight from new.As i remember kit consists of clutch inner and metal plates only, you use the existing fibre plates.

Follow this link to an article on Bou's bike and it explains what the diffrent settings are for. http://www.motocrossdigital.com/

Motocross digital has an article comparing bou's montesa and raga's pro, the photo's are top quality,click on the link below and download the January issue. http://www.motocrossdigital.com

Heard of a similar problem and the cause was water in the fuel tank. I would clean out the tank and try it before fitting a new pump. Also make sure the air filter is not heavily oiled as they pull the oil through and this causes poor running.

I am sure the rims on the Sherco 50 are push bike trials rims so would assume thet are push bike spokes.Try a cycle store they may be able to help.

The 2007 and 2008 models were tuned to be smoother than the previous models but still have plenty of power it is just delivered more smoothly. 2006 models were quick off the mark and in my opinion grip was hard to find. I have no experience of pre 2006 models so can not comment on these.

Take out valve and rim tape, clean rim tape in soapy water, thoroughly clean the rim, apply grease over the spoke ends and a very small ammount(too much and the tape will not seat correctly) to rim where tape sits. Reassemble, the tape will locate in the grooves easily and as long as the rim tape was in good condition it will not leak.

Electrics, these bikes are known for having problems with the stator. the symptoms you describe are what happened to my daughters.Give Gas Gas UK a ring and they should be able to supply a re-worked stator or they may put you in contact with someone who can sort it.Ours went off to spain I beleive to be sorted and it has ran perfectly since.

9 tooth front and 60 tooth rear.you will need a new chain its a 415.Talon engineering will supply them.Your local dealer should be able to supply the chain.

I am definitly up for it,rode for 1st time last year,thoroughly enjoyed it,bagsy section without grouse moor!!!

please could someone let me know if bearings with a c3 clearance are ok for use in trials bike wheels,Thanks.

I am sure the capacity is stamped/cast into the engine housing somewhere near the kickstart as I remember. 550ml seems to ring a bell.Gear boxes rarely have dip sticks just put the correct ammount in.