if you're replacing 3 jets anyway, i'd replace the 4th as well. that way you minimise the chance of a headache when it comes to the tuning (as you'll know the jets are NOT a part of a (possible) problem
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valve adjustment
Valve adjustment
When checking exhaust valves, the outer cylinder's (#1 or #4) cam lobe is pointing forward, the inner lobes (#2 or #3) will be pointing UP. Do not move the crank, you can check both of them. Then rotate the crank 180 degrees so the outer cylinder on the other side of the engine is pointing forward and the inner one is pointing up. Again, you can check both valves without moving the crank.
On the intake side, the outer cylinder's lobe will be pointing UP, the inner one will be pointing BACK. Check both valves on that side, then rotate the crank 180 degrees and check the other side.
The theory here is that both valves are untensioned which makes the clearance more consistant than if #1 was depressing the valve while trying to measure #2.
GS850GT
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KRISTI'SGS550
psyguy,
thank you for the run-down and help on the valve adjustment. I never understand why the positioning, thanks for pointing out that it is to get a better measurement. Some of my gauges go 3/4 of the way between the shaft and the tappet, some go 1/2 and some go 1/4 way. All feeler gauges fit between, but none fit all the way between. Do you get what I mean?
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KRISTI'SGS550
I think I figured it out. I am using feeler gauges in inches, not mm. I will have to go to the store tomorrow and pick up some mm feeler gauges. The feelers are supposed to go all the way between right?
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Originally posted by KRISTI'SGS550 View PostToday I also pulled my cam chain tensioner and cleaned it and reset it. I don't think it was properly installed by the PO because it wasn't moving at all. I think he has the screw and bolts tightened all the way therefore not letting the setup move at all. So I pulled it, cleaned a lot of crud off of it and reinstalled it properly so it will hopefully work when I start the bike.
i suspect it is easy to get it wrong unless time is taken to study how the tensioner actually works
i had to go back and forth between the tensioner in my hands and the service manual a few times before i could get my head around itGS850GT
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KRISTI'SGS550
yeah I had to look at a walk through a couple times while putting the tensioner back together, to make sure i did it correctly.
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Originally posted by KRISTI'SGS550 View Postpsyguy,
thank you for the run-down and help on the valve adjustment. I never understand why the positioning, thanks for pointing out that it is to get a better measurement. Some of my gauges go 3/4 of the way between the shaft and the tappet, some go 1/2 and some go 1/4 way. All feeler gauges fit between, but none fit all the way between. Do you get what I mean?
the gauge has to go all the way through under the shaftGS850GT
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Originally posted by KRISTI'SGS550 View PostI think I figured it out. I am using feeler gauges in inches, not mm. I will have to go to the store tomorrow and pick up some mm feeler gauges. The feelers are supposed to go all the way between right?
do you have access to the data on the gaps in inches?GS850GT
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KRISTI'SGS550
Originally posted by psyguy View Postyou CAN use the gauges in inches if you have the right sizes
do you have access to the data on the gaps in inches?
I looked at the gauges closer after we started talking and it has the inches and mm. The smallest mm is .038 and it doesn't fit underneath. The gauge then goes to .051mm, followed by .076 and 1.02mm. None of which, especially the 1.02 fit underneath the shaft and over the shims. The small ones fit about 3/4 of the way, but they can't poke out the other side, either too big or I still have the shaft facing the wrong way or something? Shouldn't some of these fit? Like the .038, .051 at least?
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Originally posted by KRISTI'SGS550 View PostShouldn't some of these fit? Like the .038, .051 at least?
if .038 gauge doesn't fit you'll need to go down (at least 1) size on shims
you can take them all out taking care to write down their position, they should be stamped with a number, you may be able to re-use some and see how your gauge fits
talk to "steve" he's got excell template easy to work out the shim sizes you require
there's a lso a shim swap thread going on, you might want to check thatGS850GT
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KRISTI'SGS550
Originally posted by psyguy View Postit would be VERY nice if they did but reading the forums here it seems that that's often not the case - unless the PO was a member here and knew the importance of the proper valve adjustment!
if .038 gauge doesn't fit you'll need to go down (at least 1) size on shims
you can take them all out taking care to write down their position, they should be stamped with a number, you may be able to re-use some and see how your gauge fits
talk to "steve" he's got excell template easy to work out the shim sizes you require
there's a lso a shim swap thread going on, you might want to check that
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Suzuki_Don
if .038 gauge doesn't fit you'll need to go down (at least 1) size on shims
you can take them all out taking care to write down their position, they should be stamped with a number, you may be able to re-use some and see how your gauge fits [quote]
When PSYGUY says "you can take them all out", he doesn't mean at once as you will damage the camshaft lobes and buckets as you rotate the motor. Measure each clearance and then take it out without moving the motor, measure the shim, record its size and which valve it belongs to. Replace that shim and then do the next one.
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KRISTI'SGS550
So if the .38mm doesn't fit all the way under and through the other side than I need to foresure go down one shim size? Do I have that correct? And that should make at least that one work and I will be off to the next one right?
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