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yb 100


webi
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hi i have a 1988 yamaha yb100 deluxe it seems to go well through the gears but bogs down in 4th this is about when i change gear

1st to 2nd 10-15 mph

2nd to 3rd 25-30 mph

3rd to 4th 40-42 mph

i wondered if that seems right to you im also wondering if it could be the baffle as the owner before me cut it down

edit:it also stays at around 42-45 mph in 4th no faster

edit: just took the bike out for a 40min run when i come back i notice it is idling high and revs are slowly increasing can anyone help?

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3rd to 4th 40-42 mph

i wondered if that seems right to you im also wondering if it could be the baffle as the owner before me cut it down

edit: just took the bike out for a 40min run when i come back i notice it is idling high and revs are slowly increasing can anyone help?

Yeh " i v just ridden a RS 100 [ same but with a frame] it pulled 57 mph flat oot " not bad coz am 15 st,

That rising rev"s thing wen hot, sounds like crank seals,, do the WD40 Test on side of engine, [ remove casing ]

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Yeh " i v just ridden a RS 100 [ same but with a frame] it pulled 57 mph flat oot " not bad coz am 15 st,

That rising rev"s thing wen hot, sounds like crank seals,, do the WD40 Test on side of engine, [ remove casing ]

whats the wd40 test can you explain it to me please?

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sigh this bike is to much trouble right the revs only sky rocket when the idle screw is turned right in also when i am slowing down and change gear down the bike seems to bog down but after 2 or 1 second the revs are back there

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