Hello TT users!
I have joined the yamaha family! Picked myself up a 1999 yz400f for under a grand. It starts first kick, no choke, and starts within 3 kicks hot (with the hotstart pulled). Did an initial oil change (yamalube 10w40, approx. 1.7 liters) and coolant swap (Peak 50/50 pre-mixed coolant). Old oil looked brand new, no metal flakes. Makes no weird noises from the engine. Clutch pull is heavy, brakes feel very good. Idle is a bit rough, has slight surging/hesitation off idle when accelerating, runs great once you sink into the throttle. Excel rims, new dunlop soft-intermediate terrain tires, new x-ring chain + renthal sprockets. WC frame guards, gripper seat cover, renthal twin walls, moose filter. Has full white brothers exhaust (series 3), muffler pipe is badly dented/folded, around 40% less open where it bolts to the subframe, and it sits partially over the rear wheel so on jumps the muffler contacts the tire. Throttle sticks open, has to be closed with your hand. Has a clean title and tabs.
So, in your opinions, was this a bad buy/deal? It was an impulse buy, I admit it. I currently have only a '98 xr250 for trails and wanted something faster for the desert. Is this a good bike (model). What mods should I do to it to improve power, reliability? Common sense mods? Muffler fixes? Should I just sell it before something goes wrong? Thank you all in advance.
Another thing, the crank breather seems to be routed to the bottom of the frame. My xr had this stock routing until it sucked a liter of water into the engine. Now I routed it up and into a filter. Will the yz400f do this? Thanks!
Edited by Peter S., March 17, 2015 - 07:07 PM.