Good to hear you got the clutch sorted as well, Richard.
I had been wondering about the electric start issue as well. Could it be the auto-decompressor not activating correctly when the motor is hot? I was not sure if it actually had one?
I saw on the Powerhouse web site, when I was checking for some Sherco consumables, that they have the SWM parts online with breakups and pricing. There is a reasonable chance the motor is the same as yours. Paul at Powerhouse would probably know.
In the attached (hope it copies and pastes OK!), parts 14 to 17 would probably be the auto-decompressor. It may just need adjustment? Others would know more about this than me.
SWM 2017 RS 300R 06 - Valve Timing
Please note that all prices below are Unit prices. ie: the price for one item.
# On Diagram
Price Per Item
GEAR, TIMING T33/34 SWM
TIMING GEAR T17 SWM
CHAIN, TIMING SWM
CAM SHAFT, INTAKE SWM
KEY, WOODRUFF SWM
BEARING, BALL 12X28X8 SWM
CAM SHAFT, EXHAUST SWM
WASHER. THRUST 16X19.2 X0.8 SWM
WASHER. THRUST 16X19.2X1 SWM
WEIGHT, VALVE LIFTER SWM
ROLLER B4X21.8 SWM
CIRCLIP 16 MM SWM
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