Posts
91
Joined
1/15/2018
Location
Glendale, AZ
US
Bike runs great on the track but we are having issues with taking off at lower RPM's. If you launch the bike hard it will take off hard. If my son just tries a nice smooth lower RPM takeoff the bike will start to go then immediately bog 5-6 times and stall.
Bikes still brand new maybe 2 hours but I think there is definitely a issue there.
Thanks for help
Bikes still brand new maybe 2 hours but I think there is definitely a issue there.
Thanks for help
2) Clogged pilot (check to see if the bike will rev on the stand. #1 and #2 go together all the time.)
3) Kid still learning the clutch. My 13 year old took about 5 to 10 ride days and maybe 10 hours before she got it.
4) Fouled plug
Pull the spark plug and see what it reads. Odds are good it's oil fouled. OEMs like to jet bikes pretty rich from the factory to make them last longer.
Could be the way he is launching the bike. If it's there pilot how do I tell if it's a rich or lean bog?
The Shop
Im familiar with your issues. Ive experienced the bogging when my son first began riding the 65, as if the bike is still cold or "loaded up" but have obviously warmed up the bike and like you said revs fine on the stand. I feel like I could hop on the bike and take off just fine as an experienced rider knowing when to throttle up and maybe work it through the "bog" if you know what I mean. I will agree that it may be a learning curve with the transition to clutch life..
Here's what I've come up with. If your plug fouls the bike will not run. Or will sound very unhealthy when revving if it is running, but will eventually die. I've got an '18 yz65 for my son and have had a plug foul. What fuel ratio are you running,and what jet set up? I've had a good relationship with Pax Racing throughout our 50cc career lol and talked to them about jetting and fuel ratio. 135/50 and 40:1 is their advice. I know this has helped us out, and the bike is ripping great and no more problems
We are running Maxima K2 at 40:1
Post a reply to: 2018 YZ65 Jetting Issue?