Grizzly 8″ Jointer Model 490X Review Part 2
Grizzly 8″ jointer model 490x review part 2 is post about Buying Advice bookmarked by ben with ID 1691217088 was uploaded on 17-02-2019 and has been viewed 29,761 times.
PART 2: REVIEW OF FUNCTIONALITY, QUALITY, AND PERFORMANCE Photo courtesy of Grizzly Industrial In part one of this review I explained my rationale behind choosing this tool, and gave some perspective on the set up process.
Now I will take a look at some of the machine's key attributes and put it through a few shop tests.Vibration problem turned out to be the motor.As I mentioned in part one of my review, the jointer initially exhibited excessive vibration during startup and spin-down that was diagnosed by Grizzly tech support as a belt problem.
Three days later the belt arrived but unfortunately it didn't resolve the problem.After further discussion with tech support, they routed me to someone with more knowledge about this specific jointer who indicated that the 490 series has been known to occasionally exhibit this problem, particularly during spin-down.
He described it as an electro-magnetic effect in the motor as it spins down, creating a sort of electric brake effect, which correlated well with what I was observing.I indicated that the problem was so severe that it had loosened the fastener holding the upper pulley in place, and after several troubleshooting steps the motor had completely stopped working....