DaveT150 Posted February 22, 2010 Share Posted February 22, 2010 Hi I'm looking for suggestions as to where I could buy a valve adjuster screw and locknut for a 1978 XS400? I've tried my local Yamaha dealer but no joy there. On a ride last weekend the engine started running roughly, once home I went to check it over and re-set the valve clearances and I found one of the adjusters had vanished! I tried draining the oil and removing the sump plate, taking off the cam cover and poking around with one of those useful magnet on a telescopic rod thingys, but there was of sign of it. Thankfully no metal particles either. Next I took off with the head and barrels and removed and up ended the engine, thankfully that did the job and the offending adjuster and locknut fell out. Unfortunately the fine pitch thread on the screw is sufficiently damaged to render it unuseable. I guess this is my own fault for not tightening the damn thing up suffciently, thankfully the only damage will be the cost of a new adjuster and some gaskets! many thanks Dave Link to comment Share on other sites More sharing options...
bznchris Posted February 22, 2010 Share Posted February 22, 2010 Hi I'm looking for suggestions as to where I could buy a valve adjuster screw and locknut for a 1978 XS400? I've tried my local Yamaha dealer but no joy there. On a ride last weekend the engine started running roughly, once home I went to check it over and re-set the valve clearances and I found one of the adjusters had vanished! I tried draining the oil and removing the sump plate, taking off the cam cover and poking around with one of those useful magnet on a telescopic rod thingys, but there was of sign of it. Thankfully no metal particles either. Next I took off with the head and barrels and removed and up ended the engine, thankfully that did the job and the offending adjuster and locknut fell out. Unfortunately the fine pitch thread on the screw is sufficiently damaged to render it unuseable. I guess this is my own fault for not tightening the damn thing up suffciently, thankfully the only damage will be the cost of a new adjuster and some gaskets! many thanks Dave http://www.nwvcp.com/pages/parts/viewbybrand/2/Yamaha.aspx http://www.cmsnl.com/yamaha-xs400sh-1981_model8826/partslist/ Link to comment Share on other sites More sharing options...
Moderator drewpy Posted February 22, 2010 Moderator Share Posted February 22, 2010 its still listed, must have a lazy yam dealer. Link to comment Share on other sites More sharing options...
DaveT150 Posted February 22, 2010 Author Share Posted February 22, 2010 http://www.nwvcp.com/pages/parts/viewbybrand/2/Yamaha.aspx http://www.cmsnl.com/yamaha-xs400sh-1981_model8826/partslist/ Thanks very much, really useful links Dave Link to comment Share on other sites More sharing options...
DaveT150 Posted February 22, 2010 Author Share Posted February 22, 2010 its still listed, must have a lazy yam dealer. Thanks that's good to know. I guess they can't be bothered with a few bits for a 30 year old machine. I'll try Fowlers in Bristol. cheers Dave Link to comment Share on other sites More sharing options...
Moderator drewpy Posted February 22, 2010 Moderator Share Posted February 22, 2010 Thanks that's good to know. I guess they can't be bothered with a few bits for a 30 year old machine. I'll try Fowlers in Bristol. cheers Dave and also Motoward part # 1l9-12159-01 screw 90179-06128 locknut Link to comment Share on other sites More sharing options...
bznchris Posted February 22, 2010 Share Posted February 22, 2010 Thanks very much, really useful links Dave don't thank me! i got all my info from drewps... Link to comment Share on other sites More sharing options...
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