Content Source: 2020 550 Indy 144 Owner’s Manual (9929781 R01) > Specifications 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

550 INDY 121

Capacities and Dimensions

Body Style

PRO-RIDE

Rider Capacity

1 Rider

Chaincase Oil Capacity

8.96 oz. (265 ml)

Fuel Capacity

11.5 gal. (43.5 l)

Oil Capacity

3.05 qts. (2.89 l)

Gearcase Oil Capacity

N/A

Height

48.75 in. (123.2 cm)

Length

114 in. (289 cm)

Designed Width

48 in. (122 cm)

Brake Type

Hayes Phantom Lite DOT 4

Drive Clutch Center Distance

10.63 in. (27 cm)

Drive Belt P/N

3211154

Drive Clutch Type/Driven Clutch Type

CVTech PB50 / CVTech Invance

Reverse Transmission

Electronic Reverse

Engine and Cooling

Engine

EC550PM0134

Displacement

544 cc

Cylinders

2

Bore x Stroke (mm)

73.0 x 65.0

Alternator Output

280 watt

Carburetor/Throttle Body

2-Mikuni

Carburetor Model

VM34SS

Idle RPM

1700 +/- 200

Rated Operating RPM

7000 +/- 200

Cooling

Fan Air

Ignition Type

Kokusan 16 Bit ER

Ignition Timing

15° BTDC @ 1600 RPM, 14° BTDC @ 6500 RPM

Spark Plug / Gap

NGK BR9ES / .028 in. (0.70 mm)

Recommended Engine Oil

Polaris Blue 2-Cycle Semi-Synthetic Oil

Recommended Fuel Octane

Minimum 87 non-oxygenated

Carburetor Settings

Main Jet

220

Pilot Jet

45

Jet Needle/Clip Position

6BGY48/#4

Needle Jet

Q-0 (480)

Cutaway

3

Throttle Gap Under CA

6.98 mm / .275 in.

Fuel Screw (from fully seated)

N/A

Air Screw (from fully seated)

1.5 Turns Fixed

Pilot Air Jet

2.5

Carburetor Jetting

* Shaded cells indicate factory settings

ALTITUDE Meters (Feet)

AMBIENT TEMPERATURE

°F

Below
- 30

-30 to - 10

-15 to +5

0 to +20

+15 to +35

+30 to +50

+45 to +65

Above +65

°C

Below
- 34

-34 to - 23

-26 to - 15

-18 to - 7

-9 to +2

-1 to +10

+7 to +18

Above +18

0-600 (0-2000)

Main Jet

240

230

220

220

210

210

200

190

Pilot Jet

45

45

45

45

45

45

45

45

Clip Position

#5

#4

#4

#4

#3

#3

#2

#1

600-1200 (2000-4000)

Main Jet

230

220

210

210

200

190

190

180

Pilot Jet

45

45

45

45

45

45

45

45

Clip Position

#4

#4

#4

#3

#3

#2

#2

#1

1200-1800 (4000-6000)

Main Jet

210

200

200

195

190

180

180

170

Pilot Jet

45

45

45

45

45

45

45

45

Clip Position

#4

#4

#3

#3

#2

#2

#2

#1

1800-2400 (6000-8000)

Main Jet

200

190

185

180

170

165

160

160

Pilot Jet

45

45

45

45

45

45

45

45

Clip Position

#4

#4

#3

#3

#2

#2

#1

#1

2400-3000 (8000- 10000)

Main Jet

190

180

170

165

160

155

150

150

Pilot Jet

45

45

45

45

45

45

45

45

Clip Position

#4

#3

#3

#2

#2

#1

#1

#1

3000-3700 (10000- 12000)

Main Jet

170

160

155

150

150

145

140

140

Pilot Jet

45

45

45

45

45

45

45

45

Clip Position

#4

#3

#2

#2

#1

#1

#1

#1

The carburetor jetting chart above is consistent with the provisions of U.S.A. federal regulation 40 CFR 1051.115(d)(3) and is an acceptable alternative to the use of tamper-resistant features.

Clutching

INDY 121

ALTITUDE Meters (Feet)

Drive Clutch Shift Weight

Drive Clutch Spring

Driven Clutch Spring

Driven Helix

Chaincase Gearing/ Pitch

*Shaded cells indicate factory settings

0-600 (0-2000)

2205307-43 gr (1 ea)
2205309-3.2 g (3 ea)

7044154
202-292
CVT 1151-1135

7044155
90-112
CVT 5951-1006

Fixed

18:42
72P

600-1200 (2000-4000)

1200-1800 (4000-6000)

2205308-21 gr (1 ea)
2205309-3.2 g (8 ea)

1800-2400 (6000-8000)

2205308-21 gr (1 ea
2205309-3.2 g (7 ea)

2400-3000 (8000-10000)

2205308-21 gr (1 ea
2205309-3.2 g (6 ea)

3000-3600 (10000-12000)

2205308-21 gr (1 ea
2205309-3.2 g (5 ea)


© Copyright Polaris Industries Inc. All rights reserved.