my motor still sounds a bit noisy, (rattly) the noise decreases slightly when the clutch lever is pulled in suggesting some of it is clutch noise.
Maybe I'll check the stator bolts next...??
By the way, has anyone had either of these faults on 04 450 models yet?
I have a 03 WR and the engine noise decreases when I pull in the cluch lever. I bought it used in 2006 and so far the sound didn't get better or wost. I shouldn't worry much about that.
If you have a 03 WR you better upgrade to WR 04 the e-starter. I had once the spin weel bolts untightened and once broken! The spin wheel
chewed the Stator and the copper wire was chopped from the gear wheels.
TT Forum helped me understanding what was the problem. This might be helpfull for you (I think it was made in 2006):
04 Starter Conversion Instructions - Courtesy of TT'er to Dan Djokovic (Indy_WR450):
[COLOR="DimGray"]Purchase Retrofit Parts
The parts needed:
04 Left Side Case Part # 5TJ-15411-10-00 @ $ 92.49
The Left Side Case is NOT necessary!! You may instead, purchase the stand alone bushing (Yamaha P/N 90380-10002-00, Bushing, Solid)
The bushing presses into the existing '03 cover and accommodates the shaft for the torque limiter (smaller diameter than the '03 gear.)
04 Torque Limiter Part # 5TJ-15560-00-00 @ $204.99
04 Torque Limiter Cover Part # 5TJ-1549B-00-00 @ $28.99
04 Thrust washers (need 2) Part# 90201-105A8-00 @ $ 7.98 total
Gasket for side cover (not shown in pic) Part # 5TJ-15451-00-00 @ $ 4.49
Total cost $338.94 plus tax[/COLOR]
If you need I should also have the procedure.