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Hi.

I think I found reason for my Jonway 250c (15500km on it) engine vibration and little knocking in low rpm, about 3500-3800rpm. Listen this video Jonway 250cc knocking. I think connecting rod cause this knocking. Otherwise the engine will run smoothly in higer rpm.
I changed engine oil regulary, every 1000km. I used synthetic oil 5W-40 every time. Is that oil too thin. Should I use 10W-30 mineral oil?

- Arska -

I bought these light. Not installed yet.

I'm going to install these before spring, like this installation was made

Hi all.

My scooter has begun vibration while acceleration. I changed a new variator belt and this didn't help. Variator rollers were in very good condition. Next I checked engine mount bumper and there was  a nut little loose. I tightened it and helped little but did not solve that problem. I took off CVT cover and started engine and revvinged. While rpm rised to 4500 vibration/resonance started and I saw that clutch bell was shaking and clutch pulled out form gearbox about 1mm. Damn.
I removed gearbox cover and checked bearings. Transmission input shaft bearings were worned. Tomorrow I'll buy new bearings and repair gearbox. I dont know why bearings were worned because I have serviced  scooter regulary. Every 1000km.

This vibration caused also rear suspension spring shaking. Like "rumrumrumrumruuumruuuuum".

Wait and see until I have repaired gearbox does this service solved that vibration problem. Im sure about this.

Arska

I think I must install spot type work light that the lights do not dazzle oncoming traffic and use these only with high beam.

I found very good installation example from SilverWing forum.
Link here

Voltage lost solved.

I opened wire harnes and installed extra wire from R/R to fusebox and from fusebox to ignition switch. Also from ignition switch to battery. At the end I installed relay for ignition switch. Now all poor wires and contacts is very good. When head lights is on, charging voltage is 14.32V with idle and does not rise with higher rpm. When cooler fan and headlight is on, voltage is 13.35V with idle and rise to 13.90V in higher rpm. R/R is original china quality.

-arskal-

Hi.

I have Jonway 250 -08 with Honda Clone engine. I have been driving two years with this bike without charging problem. Actually, I have not paid attention to the charging because I have no battery drain problem at all. Today I checked how this scooter charges. Idle rpm voltage is 14.4V and higher rpm it drop to 13.2V and stays there. When I put jumper wire alongside the R/R red wire, charging voltage goes up to 14.4V and is stable in idle and higher rpm. There is somewhere weak contact, I think.

Wiring diagram shows that R/R red wire goes to battery positive terminal.  but I'm little confused with one thing.
This R/R red wire does not go directly to battery positive terminal via 15A fuse in my scooter. It seems  to be connected to ignition switch. When I switch ignition on, both wires , red and black are energized. When ignition is off, both wires are not connected. In my scooter, driving light is on when I switch ignition to on.

Has somebody encoutered this type of R/R wiring.

Best regards
Ari