2007-2008 Polaris IQ Snowmobiles Service Manual, Page 131Get this manual
Engine and Cooling Systems EXHAUST VALVE MAINTENANCE
Exhaust Valve Assembly
VERTICAL SCREWS HORIZONTAL SCREWS
Lubricate the guillotine blade and shaft with engine oilActuate the guillotine to ensure full and free motionInstall the spring, and coverTorque the vertical cover fasteners to specification
CoverBase Fastener Torque: 12 Ft.Lbs(16 Nm)
BELLOWS BELLOWS WASHER CAP NUT
10Install new gasket on the cylinder, then install the EV assemblyThe guillotine shaft will only fit into the cylinder the correct wayIf the shaft will not slide in, verify it is installed correctly11Torque the horizontal cover screws to specification
EV BASE wFITTING GASKET GUILLOTINE
Optional Exhaust Valve Springs
SPRING 7041704-01 7041704-02 7041704-03 7041704-04 7041704-05 7041704-06
COLOR Blue Orange Pink Purple Yellow White