Content Source: 2021 Indian Vintage Dark Horse / Indian Vintage / Indian Springfield Dark Horse Owner’s Manual (9939979 R01) > Maintenance Chapter

IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle.Always follow the warnings and instructions in Owner's Manual.

Click the CONTENTS link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com

Shock Air Pressure (Ride Height) Adjustment

caution
Air pressure increases VERY quickly when using pressurized air. Wear eye and face protection.
For riding comfort and to ensure proper ground clearance, adjust rear shock air pressure. Refer to the label located on the inside of the left side cover. The label shows recommended pressures based on potential load weights. Always inspect and adjust shock preload (ride height) based on your actual load weight, in addition to adjusting shock air pressure.
Follow these guidelines when adjusting:
  • Park the motorcycle with the sidestand down on a firm, level surface. Remove all riders and cargo.
  • DO NOT exceed 150 PSI (1034 kPa) in the shock.
  • Use the INDIAN MOTORCYCLE Air Pump and Gauge (P/N PV-48909). Follow the instructions on the following pages.
If the recommended air pump is not available, use a gauge and a pressurized air source with a maximum line and gauge pressure of 150 PSI (1034 kPa). After using the alternate gauge, remove it quickly to minimize leakage. Expect to lose up to 5 PSI (34 kPa) with each pressure check. Use only a dry air source, such as a system with a water separator or air line dryer, to prevent moisture from entering the shock.

Standard Shock Models

AIR SUSPENSION ADJUSTMENT
TOTAL CARGO & OCCUPANT WEIGHT (lbs) AIR PRESSURE (psi) MAX PRESSURE: 150 PSI
NO TRUNK LEATHER TRUNK PAINTED TRUNK
0 0 0 0 SELECT PRESSURE CORRESPONDING TO TOTAL CARGO AND OCCUPANT WEIGHT. REMOVE ALL PASSENGERS AND CARGO BEFORE SETTING/CHECKING SHOCK PRESSURE. SET PRESSURE WITH BIKE ON SIDE STAND.
150 0 0 0
175 0 0 10
200 0 10 23
225 10 23 30
250 23 30 38
275 30 38 48
300 38 48 60
325 48 60 71
350 60 71 85
375 71 85 100
400 85 100 122
425 100 122 134
450 122 134 145
475 134 145 N/A
500 145 N/A N/A

Low Shock Models

AIR SUSPENSION ADJUSTMENT
TOTAL CARGO & OCCUPANT WEIGHT (lbs) AIR PRESSURE (psi) MAX PRESSURE: 150 PSI
NO TRUNK PAINTED TRUNK
0 0 0 SELECT PRESSURE CORRESPONDING TO TOTAL CARGO AND OCCUPANT WEIGHT. REMOVE ALL PASSENGERS AND CARGO BEFORE SETTING/CHECKING SHOCK PRESSURE. SET PRESSURE WITH BIKE ON SIDE STAND.
150 0 0
175 0 10
200 0 17
225 10 24
250 17 45
275 24 65
300 32 85
325 40 97
350 52 110
375 67 119
400 82 127
425 98 136
450 114 145
475 130 N/A
500 145 N/A

Shock Air Pressure Adjustment Procedure

  1. Park the motorcycle with the sidestand down on a firm, level surface. Remove all riders and cargo.
  2. Remove the left side cover. Remove the cap from the air fitting .
    Image
  3. Determine the recommended rear shock air pressure. Refer to the label located on the inside of the left side cover.
  4. Install the hose fitting of the recommended gauge securely onto the air fitting. Read the air pressure on the gauge.
  5. To reduce air pressure, push the bleed button on the gauge. Bleed pressure in small amounts until the desired pressure is attained.
  6. To increase pressure, pump the handle until pressure increases to the desired amount.
    caution
    DO NOT exceed 150 PSI (1034 kPa) in the shock.
  7. Remove the hose from the air fitting and reinstall the cap.
    TIP
    Expect to lose up to 5 PSI (34 kPa) with each pressure check.
  8. Repeat the preload inspection to verify proper preload. See Rear Shock Preload (Ride Height) Inspection.

© Copyright Polaris Inc. All rights reserved.