Honda PIONEER SXS1000 2016 Owner's Manual page 182

Suspension
Rear Suspension Adjustment (SXS1000M3/M3P only)
Using a pin spanner, which is available from your dealer, the rear
suspension can be adjusted for carrying heavier cargo.
Do not attempt to disassemble, service, or dispose of the damper;
see your dealer. The instructions found in this owner's manual are
limited to adjustments of the shock assembly only.
Rear Suspension Spring Pre-Load (SXS1000M3/M3P only)
Refer to Safety Precautions on page 111.
REAR
The spring pre-load adjuster has 5 positions for different load or
riding conditions. Before adjusting the spring pre-load, jack up your
Honda SXS (page 132) to avoid damaging the adjusters.
Use the pin spanner to adjust the shock spring pre-load.
Pin spanner part number: 07702-0020001
Available through your dealer.
178
Servicing Your Honda
spring pre-load adjuster
1 3
2 4 5