Sunday at 03:50 PM3 days I've just bought a 2022 301RR. Previous owner did nothing with the bike, it's literally new. Bike starts ok cold, runs fine, idles, fan cuts in, but will not start when hot. I'm new to 4-strokes. I've filled it with fresh fuel, cleaned the air filter and replaced the spark plug, but get the same same issue. Can't find any loose plugs. Tried the ECU reset holding throttle open. Checked for throttle cable free play. Where should I start looking? Thanks
Sunday at 08:58 PM3 days Adjust the valve clearance., it needs to be spot on and you just described the first symptom.
14 hours ago14 hr Agree with Lemur, most certainly the valve clearances. Get a workshop manual for the bike. There is a step by step walkthrough for everything. I’m sure there is also some advice on here. Not a hard job, but quite fiddly
15 minutes ago15 min Have a micrometer available when you set the valve clearances, use the micrometer to test feel your feeler gauge first, that gives you a more accurate setting when you adjust the valves. The valve adjuster screw has a square head that is the same size as a red (#2) Robertson screw head, you can improvise a valve adjusting tool using a short stick of wood and a Robertson screw. Edited just now1 min by lemur
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