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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?
'11 Grizz 700 here. Since I've got some warm weather these next couple days I've decided to start the bike after about a year of just sitting. Took out the plug and sprayed a good amount of fogging oil on top of the piston to help lubricate things. After about a minute of letting it soak I stuck my air line tubing in to suck out the excess, but it seems like I didn't get nearly as much in return. Repositioned the tube enough so that everything that was gonna come out pretty much did. I'll probably shoot some compressed air down the plug hole before doing the start just to make sure it's all out, as well as cranking it for a second before putting the plug back in. How long would it take for a bit of standing fogging oil to seep past the piston rings, and where would it go? I guess into the engine oil? The oil was fairly new the last time it was started but I'm sure it could stand to be changed after sitting for so long. If much of this fogging oil got into the engine oil should I do the change before the startup?
So I'm trying to figure out the year of one of my Timberwolf's. I have 4.
2 are definitely 1993's, as I can read the serial number on those.
1 has to be close to a 93, as the back rack and lug width (156) are the same as the 93's.
The last one is killing me. Someone painted over the serial number.
Listed are the differences
Back rack is different. It goes through the plastics and will pivot on the rear attachment. Doesn't have the handles out the side, either.
Doesn't have the loops coming out of front plastics.
Foot rests are different.
Lug pattern is 110.
Everything I've read, says that the Timberwolf was produced from 92-98 and then changed name to Bear Tracker. Most parts are interchangeable through those years. Only change I found, was front brakes were upgraded to disk in 2001.
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