They should both be pointing at about 12 o’clock. Align the vertical line on the little black plastic box on the base plate with the vertical line on the rotor. Do the same thing with the ratchet against the bench to make sure the piston doesn’t move again. The F is about ½ inch to the left of the T on the flywheel. Before doing this you want to turn the crank so you get the F on the flywheel showing through the viewing hole.
HONDA ATC 185 VALVES INSTALL
It will point slightly to the left of 12 o’clock when installed.įinally it’s time to install the base plate. This is the only way it can install so it’s hard to mess up. The little slot on the backside of the rotor will fit over the dowel pin on the cam. Now you are ready to install the pulse rotor. The only thing to watch out for here is to not mess up the oil seal when slipping it over the little pin. Keep at it until you get the o pointing to 12. At first you might get off a tooth or 2 and have to try again. Install the gear onto the cam with the little o pointing to 12 o’clock. Now you are ready to install the cam chain onto the cam gear, and the gear onto the cam. Whether you are just now installing the cam or already have it installed, it will have the lobes pointing down at this point and the little dowel pin should be pointing to about 11 o’clock. If you don’t do this the piston tends to want to move back down in the cylinder. To make sure it stays there through the procedure, I always use my ½ ratchet on the end of the crank and put the handle resting against my work bench. This means if you remove the valve access caps on the head cover you can move the arms just a tiny bit. If you do have the cam installed then to make sure you are on the compression stroke of TDC you still want to have the T showing, but you also want both rocker arms to be loose. I usually remove the spark plug and look in the hole with a flashlight to verify the piston is at the top of its stroke. If you don’t have the cam installed yet the exhaust and compression stoke hasn’t been determined so just have the T on the flywheel showing through the viewing hole. The first step that I don’t even have pictured here is to get your piston to TDC.
I see questions come up about this every so often so I figured since I was going to be doing it I would document the process.
If you run it hard you can hole the piston.This procedure should apply to all 185 and 200 Honda trikes besides the 86-87 200x If you run a very oily mixture it can make the engine run hot - it is similar to using fuel with too low an octane rating and the engine does not like it. You might as well get them to check the connecting rod for big and little end play. While you are at it ask them to inspect the cam and the rockers. Get some new guides (and valves if they say they're worn) and get the machine shop to fit the guides. Then buy the size they tell you and get them to bore it.Īsk the machine shop to measure and inspect your valve stems. When you decide to get a new piston take the jug to a proper machine shop you can trust and get it measured or you may buy the wrong piston.
If you don't you will end up re-using worn out parts and all your effort will be for nothing. This stuff can be done by a novice but you need someone to help you with inspection and the machining jobs.
I wouldn't try swapping just the piston - cylinder and piston as a set is okay. If you can see the play the guides and probably valves are worn. When you pull the head take off the valve springs and pull the valves out a few millimetres and wiggle them to see how much play there is. My guess is you will pull the cylinder off and the bore and piston will be scuffed badly. If it turns out one has a good bottom end / piston and the other has a good head, valves and cam then you may be able to make a good motor out of the bits. You might be able to swap bits from one engine to another but it does sound like both engines have issues. If it's burning oil it is going past the piston rings or down the valve guides - probably both. When i bought it it didnt smoke, and i got it home, changed and flushed old oil out, and the next time i got on it it started smoking and burnt up all the oil in about 4 hours and got so hot the dip stick started to melt! still runs after getting so hot so i dont think the heat messed anything up.
0 kommentar(er)
