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if using oem yamaha headbolts bring the torque up to 20 ft-lbs

alright just go ahead and change everything else out...stator, cdi, ignition coil, start stop switch, flywheel, etc.

is this a b pipe? do you have a jetworks valve on the stinger feed? do you have a restrictor or jet in it? take out the jetworks valve and drill out a old needle valve to 7/32 hole put that inline to stinger and try that as you can help a low studder by adding just a little more water to the...

once you have your leak fixed lower the popoff and use a bigger low jet you have a lean studder problem may have to drop the high jet a little as you fix the studder by richening the lows

not a big enough leak to cause this stumble your having but you don't want any leakage

this all plays a role in how much upper case work you do when adding bigger ports in aftermarket cylinders also bore and stroke combinations all effect the primary compression ratio

by filling you increase the primary compression ratio which is good for more throttle response and stronger mid range power grinding and lowering the primary compression ratio will soften the lowend hit and stronger upper mid to top end power

stock msd setting is about 8000 rpm i set them closer to 9000 rpm turn screw to the right to max out then back 1/8 turn then lock jam nut down lightly

brown/white stator wire to brown on msd connect white from start/stop to white on msd first then connect white/red to msd white on 61x stators jumper white wire that is female/female connector, on white/red from stator is used on late models with 62t stators then to msd white

probably starts with a xs1400

like chuck said with 61x cylinders, raising exhaust port a couple of degrees works well yamanube your fine with what your offering, just this little bit of porting work will go a long way in making power with your typical add on mods like b-pipe, ada head, rejetting and or better carb system

stock return hole size .5mm (.020in.)

the pink wire from the cdi needs to be left unplugged (overheat limiter) just tape it up good

plugs is not your problem

pipe, aftermarket carbs, and proper prop pitch and slip all will pay a big role start by learning mathematics of your engine and calculate compression ratios for a 760 engine with 35cc domes.... now select fuel octane to go with the math altitude about 500-1000 ft is about .6 tenths of...

i would stay with 37cc on a 760 unless engine is totally setup by someone in the know

i just dont see holes inside the hood liner i do see the small holes just outside the seal gasket

how does that hood breathe? 900cc engines need air

YA7635L domes are really high compression on a 760 with a programmable ignition could make it work on pump gas

b1023 is the kawasaki bearing if using a oem yamaha part you want the U3 bearing not the 701 U2 bearing that uses the shims I think the U3 is for the yam 650 same as the kawasaki bearing