by tonydevil » Tue Nov 17, 2009 1:00 pm
XTZ750 specific things to check when looking to buy
front sprocket welded? - some aftermarket sprockets arent a good fit and cause the front sprocket to come loose and damage the retaining thread which leads some owners to weld them on as a 'fix'. its 7x8mm hex bolts and 1x10mm hex bolt and 2mins to check. fixing the output shaft virtually rights the engine off due to the work and cost involved.
regulator/rectifier - these were a weak point on all models, although some imports (especially italian bikes) had a fix supplied by their national dealer. its an easy upgrade with aftermarket parts available for around £50
MPG fuel consumption - low speed and town riding causes the 'emulsion tubes' (aka needlejets) to wear in the carbs and leads to the bike running rich and rubbish MPG, a sorted bike should be getting in excess of 50mph cruising at 70mph. again its an easy fix with better quality aftermarket parts available for under £50
frames - check the rear engine mounts around the frame, if they bike has had serious 'off road abuse' or left out in all weathers causing rust you may find small cracks around the weld. its not a problem and easy to fix as long as the rust hasnt affected the joins
wheels - earlier models had black wheels, check for bubbling which is indicative of rotting
brakes - front brakes arent great, no real cost effective upgrade exists other than reconditioned originals with braided lines
oil burning - they all burn oil, its due to the tolerances in the bores, but how much? 1litre per 4000miles is good, 1ltr per 2k is normal, 1ltr per 1k hints at a problem. sometimes its fixed by replacing valve stemseals, output shaft seal or startmotor o-ring
tool box cover - if it has one that hasnt been lost you are lucky
2003 Yamaha TDM900 - commuter
1991 Yamaha TDM850 - tourer
1997 Yamaha TRX850 - twisty toy
gone but not forgotton : 1991 Yamaha XTZ750 Super Tenere
"Never argue with an idiot. They just bring you down to their level and beat you with experience"