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Following on from the brief interlude in the "introducing myself" thread....
In a nutshell, I acquired a YFM250 Moto 4 (1991) for cheap recently with the previous owner citing "no spark, needs a new magneto coil and I don't have time to fix it"... anyway I am dubious that the magneto/generator is the issue and thinking more along the line of ignition coil as after a clean up of the magneto I was able to get a rather decent voltage reading off the magneto with pull start and resistence readings seem to check out that the magneto is all ok (all 3 x phases = 1.2 ohms and no run to ground)
None the less I ordered a new Ignition coil and Magneto/generator coil and am waiting for them to arrive.
In the mean time I cleaned up the current Magneto, popped in a new battery and sparkplug, checked out all the wiring harness, all seemed good except I came across the "neutral switch" wire was broken.
After wiring up a new neutral switch wire, the neutral light now comes on (small win) and the starter relay (attached to rectifier) now clicks. If I hit the starter switch on handle bar the starter motor spins and if I pull the cord starter I get a spark on pull....YAY!! I'll try and attach a video below if possible.
So onto the starter motor. Starter solenoid seems to work A-ok, even if it looks crappy and starter motor spins as it should when I hit the start switch....but here is my issue.
When the starter motor runs it turns Cog #1 and Cog #2 (see photo below)....but the chain in the back of the starter which I assume is the timing chain, does not move and there is no apparent movement of the piston in the cylinder.
If I turn it by hand (per photo) or with the pull starter however the chain moves and the engine turns. However cog #2 rotates but not fluidly with the "Crank" (part I turn by hand) for the lack of a better word to use if that makes sense?
Is there a grub screw or similar on Cog #2 that fixes it to the center shaft to make it all turn when the starter motor is run? Could there be a part missing? Previous owner had the starter apart so could be possible?
The outer/front part seems to be on a key-way so not sure how to remove this easily to check how Cog #2 is attached.
What am I missing here?
So yesterday I picked up a 07 polaris sportsman 800efi stealth edition for 3k. Will lead a pic ltr. In good shape. Here's what's wrong with it:
The rpm needle doesn't work just like my other sportsman... not too worried ab that.
The motor doesn't sound like it's running quite right and doesn't feel like it has much more power than my 500. I'm thinking it needs a tune up and some fresh oil.. but also it feels like it's running rich. It's a little buggy when you goose the throttle and sometimes farts when you let off (like I little backfire out the exhuast). I'm gonna check timing and valave clearence on the motor first but thinking of putting a tuner on it? Anybody got a suggestion? Mainly looking for more power.
Ok so 2000 sportsman new.caltric carb new fuel pump new jug and piston new cdi and coil finally get to start it and itll idep for 5 to 10 seconds and die what am i missing people any help id love ya forever lol
Sent from my LM-Q720 using Tapatalk
A little bit of click bait there with the title because in the grand scheme of things, what the hell does a virus have to do with your ATV except maybe give you a little more time to ride if you are out of work or school!
In all seriousness, how's everyone doing? Here in lower NY, its getting a little crazy...
Schools are closed all week, might be longer as they issued every grade that didn't have one, a chromebook and google classroom (preparing for remote learning) Some stores are out of things like disinfecting wipes, sprays, rubbing alcohol, tylenol, toilet paper, pasta, and other basic necessities. (panic buying in full force) Many people (including myself) are working from home, no more travel for the next few weeks. Interesting times and I hope no one gets sick! Stay healthy!
By Trent Finnessey
So I’ve got a 400ex with a dg slip on and it’s super loud (louder than you would think for a slip on) and it’s annoys my neighbors and just everyone in general. So I would like to know who makes the quietest exhaust for it. I have the stock muffler but I’d rather sell it than put that back on. thanks!
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