bridgwaterjohn

I have rebuilt the bottom end, but i have a single thrust washer left over, it is a strange one as it has splines on the inside any ideas, where i should be ? It is approximately 35mm in dia with a very shallow set of spline on the inside

Has anyone a table or list of torque setting for the various crank case, clutch and magneto nuts & bolts on a 247cc Cota please

I now have all the parts to reassemble my Cota engine, I am checking things prior to assembly and one thing I am not sure about is the kick start shaft. It appears that the assembly is as follows. The shaft is located inside the engine in a brass bush, a circlip and washer are next, and the shaft then goes through the engine casting where there is an oil seal. , the outer casing and bush are next followed by the kick start. My query is should there be a spacer after the oil seal, or if not what stop the shaft moving inwards, if this happens the cam on the kick start shaft will foul the case as is kicked over rather than correct position were the can hit the stop. Has anybody a parts drawing for a 247cc as I only have one for a 123cc that is different. Or any advise appreciated. I can forward photo, if the description above is not clear Many thanks John H

I am just about to put back together the bottom end on my Montesa Cota 247cc, Should I put the gaskets on, 1) dry 2) Small amount of gasket solution 3) lightly greased, I have read different ideas on this subject Thanks John H

I need to repair a small area around the Kick start / Kick start return sping area. Has anyone a photo of a bare crank case, so i can see what it should look like the area i am intested in is the wall to the right of where the kick start shaft goes through the casing. Many thanks John H

I have stripped down the bottom end, to replace the main bearings and seals. I am looking for advice in which order to reassemble the crank and main bearings. Do you heat the two halves of the casing and fit the main bearings into the casing first and the fit the crank ? If so how do you know the position the bearings in the casing as there is no lip to push them up against.

Some time ago I posted for information for the Main bearing numbers on a Cota 247cc 1978 / 1980, Unfortunately I did not print the post and it has now been deleated Therefore could any body please let me have the bearing numbers and seal numbers if available Many thanks, and this time I will print them

Some time ago I posted for information for the Main bearing numbers on a Cota 247cc 1978 / 1980, Unfortunately I did not print the post and it has now been deleated Therefore could any body please let me have the bearing numbers and seal numbers if available Many thanks, and this time I will print them

Simon Have you had any luck in sorting out your piston. I have a montesa Cota 247 and i am strugling to find a piston, (72mm dia + 50 required) If you have sorted it out could you please let me have any details, ie piston numbers, and any modification you have had to make. Did your piston have any ports in the skirts ? Many thanks for your help Beast regards John H

Hi Belldane Unfortunatly the piston does not have any ports in the skirt Regards John H

I have a Tarabusi piston No 7-313. That i belive is suitable for the 247 Cota, The piston does not have an arrow to indicate which way round it goes, It has the two piston ring locators at 10.30 and 1.45 aproximatly on the short shirt side. Can any body throw any light on this for me Thanks John H

Many thanks to you both John h

I have a 247 cota. does anybody know a part number for the main crank shaft bearings, and if they are a specific to Montesa, or can be ordered through a bearing company ?

Have a look at this web site, the are based around the Bath / Bristol area, but the have some great trials, with good turn outs www.bcmcc.org

The Kick start on my 247 cota is solid and will not kick over, however if i pull in the clutch it will. Has any body come across this problem before ?