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bananana · 10-31-2014, 02:12 AM

Not sure if this is the case -- but I'd want to check if it were my bike.

My buddy's bike, a 1979 Kawa KZ200 (also a thumper) had a very similar problem. Basically you could ride the bike for about 30 minutes before that would happen. You'd feel it losing power and giving it more throttle at that moment would do nothing and you'd get about 30 seconds until the motor would stall... however after playing around with it you could very very lightly feather it back to life and continue riding. The head-gasket was on the verge of needing replacement so we always assumed it was that.

The bike got ridden around for about two weeks or so.. about 100kms. Eventually it wouldn't start so we took it in to replace the head-gasket. Turns out that the cam-chain had come loose and had basically cannibalized the camshaft and all the associated parts. Full top end replacement needed. Apparently this is very common among the 200 series bikes. However, not sure if this is applicable or if the 100 architecture is even similar at all.

10-31-2014, 02:12 AM	#39
bananana Need to Seek Professional Help Join Date: Jan 2004 Location: . Posts: 1,042 Thanked 1,051 Times in 265 Posts Failed 120 Times in 37 Posts Member's Picture Albums	Not sure if this is the case -- but I'd want to check if it were my bike. My buddy's bike, a 1979 Kawa KZ200 (also a thumper) had a very similar problem. Basically you could ride the bike for about 30 minutes before that would happen. You'd feel it losing power and giving it more throttle at that moment would do nothing and you'd get about 30 seconds until the motor would stall... however after playing around with it you could very very lightly feather it back to life and continue riding. The head-gasket was on the verge of needing replacement so we always assumed it was that. The bike got ridden around for about two weeks or so.. about 100kms. Eventually it wouldn't start so we took it in to replace the head-gasket. Turns out that the cam-chain had come loose and had basically cannibalized the camshaft and all the associated parts. Full top end replacement needed. Apparently this is very common among the 200 series bikes. However, not sure if this is applicable or if the 100 architecture is even similar at all. __________________ 2007 Ducati SportClassic SE #72/100 1979 Honda CB 750 Café-Fighter 2008 Yamaha R6 (Track) Last edited by bananana; 10-31-2014 at 02:25 AM.