mullenc525
New member
HI,
I have a 07 XRS supposedly with a warranty 800r motor in it. The motor needs a top end at bare minimum.
How can I id the motor? The serial is 00502668R, stamped in another place is 6812690 and the motor number is M6387999.
I am yet to measure the crank runout, but I understand if it truly is an 800r and runout is OK it may be worth installing a piston and cylinder. I may also consider regreasing the crank, as I understand one of the crank failure modes is losing the grease in the bearings. It looks like there is a bunch of grease in the pull starter, not certain yet.
Thanks
I have a 07 XRS supposedly with a warranty 800r motor in it. The motor needs a top end at bare minimum.
How can I id the motor? The serial is 00502668R, stamped in another place is 6812690 and the motor number is M6387999.
I am yet to measure the crank runout, but I understand if it truly is an 800r and runout is OK it may be worth installing a piston and cylinder. I may also consider regreasing the crank, as I understand one of the crank failure modes is losing the grease in the bearings. It looks like there is a bunch of grease in the pull starter, not certain yet.
Thanks