Crach in my crank case

got me there ..dont know

picture of the 1200 crank out of the casing

Engine Parts for Yamaha Fj1100 Fj1200 Xjr1200 Xjr1300

Hi! if you don't have a hammer-screwdriver (what is the right name?) just use a puncher + hammer: on the side of the head first punch a small hole, so the tip of the puncher is well held on that spot/hole. Then carry on with the puncher a bit off-axis (of the screw), to cause the screw to rotate a bit to the left. Then carry on. Some WD40 can help too. I got some great results like that. Good luck!

Clutch case cover is probably the one. This is dealer item, and you will need a new gasket.

Dry rotted gasket isnt likley in four months on that new a bike. Id check for a crack in the crank case, a very tiny one can spit a good deal of oil. Get it fixed though. If it is cracked and decides to split wider while your riding you could be suddenly riding with you rear tire running on an oil slick.

You could call a place like Bits and Pieces in San Luis Obispo, Calif and they may be able to help
This is a motorcycle salvage yard.

I assume you are using the original left and right crankcase halves. If not there is the problem. Case halves must be a matched set or this type of problem often shows up. Note the positioning pins in the diagram below. Are they both there? There is an chance the crank may be out of alignment (dropped at the factory, Yamaha parts dept., shipping center, somewhere...). Get it checked at a dealership. Please rate my answer. Thanks!

YOU MAY BE ABLE TO GET THT ONE WELDED WITH A TIG

some jb weld shouls work fine on it just get it good and clean no oil or paint on the crack. or find a tig and weld it.

you definatley have a crack in cylinder head or block,,may be a head gasket too,,,you need to take it a part to see the problem,,no easy fix..not what ya want to here sorry..

Hi,

Based on your description, it would normally be called either the clutch cover or right crankcase cover.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa