I have a 2019 uforce 1000. 600 miles. Have had it for couple years now and minimal use. She's never not started. Recently decided to freshen her up. Oil change. Plugs. Cleaned the clutch weights and Built a lift and slapped some 30s on her. It's started right up after all that but dumby me didn't line up the clutch marks during reinstall. Fast forward to fixing that. Went for another test ride and felt like something was off. Ripped it back apart to find out the bolt on the other side of the crankshaft had backed off some and wasn't letting the starter engage. Fixed that. Now I'm getting I'm getting code p0108. Fuel pump isn't priming when turned to accessory. And is back firing out of throttle body. I've gone through every connection. Cleaned map sensor. Tested voltage. Is it possible that either 1. The t map sensor is causing this or 2. I through off timing on the stator side of the motor. Help.

[2015 Z Force 800 53/Trail EPS]

The only bolt on the crankshaft the being loose would have anything to do with starter, only because the starter's overriding clutch is bolted to it, would be the rotor retainer and that also is keyed to the crank as it is used by RPM Sensor..aka crank position sensor..which the ECU uses for timing. If that key is even partly sheared, and it should be if actually under torqued, the timing will be off enough to do what it's doing. By the same token, if that retainer was over torqued it could warp the rotor or set it in a position wrong for the sensor  and have the same effect. I would check the RPM sensor and it's connect first, then pull that stator cover back off and check that key. Probably need a cover gasket. Also, P0108 is a manifold pressure problem. Usually caused by incorrect detonation timing.

Thanks so much for the reassurance. I was thinking it might have slipped the key and it did just that. Ripped the case cover off and it was slipped about an inch past the key. Luckly the damage isn't bad to the crank or cup. Cleaned up the all the rough stuff and polished it back. Will be grabbing a new woodruff key tomorrow and slapping it back together. Do you know what happen to know what the torque spec is for that bolt?

[2015 Z Force 800 53/Trail EPS]

The manual for the Z-1000 (same engine) says it's 105 Nm which is 77.4 ftlbs

Got it all back together tonight fresh fluids and she started right up! Now onto tuning the lift I built snd some other odd and ends!

Got it all back together tonight fresh fluids and she started right up! Now onto tuning the lift I built snd some other odd and ends!

Love to see how you did your lift