I have a Hangar 9 p-51 PTS mkII with a the evolution trainer power system and need help with removing the bolts that hold the engine on. im not sure if i have right tool for the job, they are phillip head bolts but there doesnt seem to be enough room to put a socket wrench or a screw driving in there to unscrew the bolts, do i have to take other parts off to get to the bolts????help much appritiated

You should be OK with a standard (largish) Phillips head screw driver. I took my engine off last weekend without any problems. You must remove the muffler first, followed by the cowling, and then the engine from its mounts. One of the screws is obscured by the carby, but you should be able to get in there. The bolts on the other side should be recessed in and hold tight while you loosen the screws. Try some WD 40 if they stick. You want a Phillips head screw driver with a fairly hefty grip for max turn leverage. If your hand slips on the handle, try using a hankerchef to get more grip. Make sure you are turning the screws anticlockwise!

thanks MercerAUST!!

i think i can get to 3 of the bolts without much problem, its the bolt under the highspeed needle valve that is has me puzzled. do i need to take off the needle valve to get to that?

to get the needle valve off i would need to take off the 2 screws the hold that one and they also hold the crankcase backplate as well? let me know if i have this wrong thanks

You should be able to get to the Phillips head screw slightly sideways. Try poking around the needle housing in different directions. If you have a large Phillips screw driver, you should be able to get enough grip on the screw to get it off. It is not on very tight and doesn't need much force.

I haven't tried to remove the needle housing, but it should be relatively easy like your describe. Just write down the order in which you removed things and make a sketch of any settings that might be disturbed. Removing the crank case etc is no big deal and nothing will fall out (shine a torch in to check for rust while you are at it. Be careful to replace any gaskets on the needle houding.