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Clunk and Lunge into 1st..

1478 Views 9 Replies 9 Participants Last post by  MrDNA
Hi All-

..long time viewer, first time contributor.

I recently got my urban assault vehicle out for spring. After a few weeks of riding on last fall's oil, I've put in a fresh quart of 20w-50, my usual summer oil lo these last 3 years. Starting 'er up and shifting into 1st, the clutch chunks something awful and the bike lurches forward (occasionally stalling). Idle rpms slow, and it feels as if the clutch is not fully disengaging. We are having 60 degree weather up here in Minnesota. And as stated, I have used 20w-50 oil plenty in the past with no troubles whatsoever.


-- adjusting free play in clutch cable

(thinking maybe clutch wasn't fully disengaging)

-- allowing the engine to warm up for 5 minutes before shifting into 1st

(thinking oil viscosity needed to thin w/heat.. 60 degrees out)

-- holding in clutch for upwards of 20" before shifting

(thinking oil viscosity was keeping clutch from disengaging as easily as usual)

-- slightly backing the bike while shifting into 1st

-- blipping the throttle while shifting in..

( these somewhere)

None of these nor combinations thereof have worked. I'm not opposed to simply trading out the oil for a 10w-40 or something, but am confused.. as 20w-50 has worked so well for me in the past.

Any feedback or advice appreciated

2001 TW200

42 tooth rear sprocket

11,500 miles
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1 - 2 of 10 Posts
Have you checked your chain tension?

I'd say chain tension too.

If you have had good luck in the past with the 20-50 then I guess thats not the problem. I tried it two summers ago and it was fine when the temp was in the upper 80's, but anything below that the bike did not want to shift. I went back to 10-40 year round.

I did some rides with my 20-50 and it the bike would shift terribly in the morning at 50 degrees and great in the afternoon at 80 degrees.

To me, 60 degrees isn't warm enough to start using 20-50...but thats just me.
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Follow the clutch cable down to where it attaches to the top of the engine. Does the "pointer" point to the mark on the crankcase?
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