1. 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

04 SM450R Carb issues

Discussion in '4 Stroke' started by timmygrant08, Jul 16, 2023.

  1. timmygrant08 Husqvarna
    B Class

    Location:
    Chichester
    Husqvarna Motorcycle:
    2005 WR250, 2004 SM450R, 2006 TE250
    Other Motorcycles:
    R1, CRF450XE, Triumph 1200 XE
    Long story short the carb seems to be my issue. It's the TMR41.

    Every jet is as stated in the manual stock. New CNC manifold too as old one was perished.

    The bike runs but pours black smoke and stinks. So I think it's very rich.

    Does anyone have any suggestions I could try?

    I've been looking for an FCR for ages but none have come up :(
    timmygrant08, Jul 16, 2023
    #1

  2. flyingbob Administrator

    Location:
    USA
    Husqvarna Motorcycle:
    01&02WR360_02WR250_02CR250_12WB165
    Other Motorcycles:
    01 VOR400_07 TM450_22 GG250_07 Tuono
    flyingbob, Jul 17, 2023
    #2

  3. pvduke Husqvarna
    Pro Class

    Location:
    ... on the gas...
    Husqvarna Motorcycle:
    tripple-hondo hoosk...
    Other Motorcycles:
    dozens of them, kicked to the curb
    stuck/too high float (or in upside down/bent/etc), failed/fouled needle/seat.

    tear down carb and re-assess. vacuum check needle/seat.

    make sure choke is OFF, and working. make sure all vents are cleared.

    make sure air filter is perfect and not over-oiled.

    start over with new plugs and make sure HT lead is ok.
    pvduke, Aug 2, 2023
    #3