Snowmobile Polaris 120. Manual - part 21

 

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Snowmobile Polaris 120. Manual - part 21

 

 

80

SPECIFICATIONS

Capacities and Dimensions

Body Style

Mini Indy

Rider/Weight Capacity

1/140 lbs. (63.5 kg) maximum

Dry Weight

147.5 lbs. (67 kg)

Fuel Tank Capacity

.5 gal. (1.9 l)

Engine Oil Capacity

20 oz. (.6 l)

Height

31 in. (78.7 cm)

Length

75 in. (190.5 cm)

Width

34 in. (86.4 cm)

Track Length

69 in. (175.3 cm)

Track Width

10 in. (25.4 cm)

Brake Type

Mechanical

Ski Center Distance

30 in. (76.2 cm)

Clutch Type

Centrifugal

Drive Chain Length

#40

Suspension

Front Type

IFS

IFS Shock Type

Mini

Rear Type

Mini Indy

Engine and Cooling

Engine Model Number

EH122PM018

Alternator Output

50 watt @ 3600 rpm

Bore x Stroke

60 x 43 mm

Displacement

121 cc

Carburetor Model

Mikuni BV18

NOTE: These carburetor 

settings are to be used in 

conjunction with the jetting 

chart on the following page, 

which is based on the 

recommended fuel octane.

Idle RPM +/- 200

1650

Main Jet

70

Pilot Jet

50

Cutaway

170 Throttle 

Valve

Fuel Screw

1.75 Turns

Pilot Air Jet

1.3 mm

Cooling

Air

Cylinders

1

Ignition Timing

23° BTDC @ 3600 RPM

Ignition Type

Flywheel Magneto (solid state)

Spark Plug/Gap

NGK BR6ES/.028" (.70 mm)

Recommended Engine Oil

PS-4 or PS-4 Plus

Recommended Fuel Octane Minimum 87 octane non-oxygenated or 89 

octane oxygenated

81

SPECIFICATIONS

Carburetor Jetting

AMBIENT TEMPERATURE

ALTITUDE

Meters (Feet)

Below

-25°F

(-31°C)

-30° to -10°F

(-34° to -23°C)

-15° to +5°F

(-26°C to -15°C)

0° to +20°F

(-18° to -7°C)

+15° to +35°F

(-9° to +2°C)

+30° to +50°F

(-1° to +10°C)

+45° to +65°F

(+7° to +18°C)

Above 

+60°F

(+16°C)

NOTE:  Main jet is the first number in each cell; Pilot jet is the second number (in italics)

0-600

(0-2000)

72.5

55

72.5

55

70

50

70

50

70

50

67.5

50

67.5

45

67.5

45

600-1200

(2000-4000)

70

50

70

50

70

50

67.5

50

67.5

50

67.5

50

65

45

65

45

1200-1800

(4000-6000)

67.5

50

67.5

50

67.5

50

65

50

65

50

65

45

62.5

45

62.5

45

1800-2400

(6000-8000)

65

50

65

50

65

50

65

50

65

45

62.5

45

62.5

45

60

45

2400-3000

(8000-10000)

65

50

65

50

62.5

50

62.5

45

60

45

60

45

60

45

60

45

3000-3700

(10000-12000)

62.5

50

62.5

50

60

45

60

45

60

45

57.5

45

57.5

45

57.5

45

82

POLARIS PRODUCTS

Part No.

Description

Engine Lubricants

2870791

Fogging Oil (12 oz. Aerosol)

2874865

Performance Synthetic 4-Stroke (PS-4) Oil (qt.)

2874866

Performance Synthetic 4-Stroke (PS-4) Oil (gal.)

2876244

Performance Synthetic 4-Stroke (PS-4 Plus) Oil (qt.)

2876245

Performance Synthetic 4-Stroke (PS-4 Plus) Oil (gal.)

Gearcase/Transmission Lubricants

2873602

Premium Synthetic Gearcase Lubricant (qt.)

2871653

Premium Front Gearcase Fluid (8 oz.)

2871654

Premium Demand Drive Hub Fluid (8 oz.)

Grease/Specialized Lubricants

2871312

Grease Gun Kit, Premium All Season (3 oz.)

2871322

Premium All Season Grease (3 oz. cartridge)

2871423

Premium All Season Grease (14 oz. cartridge)

2871329

Dielectric Grease (Nyogel

t

)

Coolant

2871323

Anitfreeze, 60/40 Premix (gal.)

2871534

Anitfreeze, 60/40 Premix (qt.)

Additives/Miscellaneous

2871326

Carbon Clean Plus (12 oz.)

2870652

Fuel Stabilizer (16 oz.)

2872189

DOT 4 Brake Fluid (12 oz.)

2872893

Engine Degreaser (12 oz.)

2870505

Isopropyl

2872889

Brake and Clutch Cleaner 

2872890

Carb and Throttle Body Cleaner 

83

WARRANTY

Service and Warranty Information

Obtaining Service and Warranty Assistance

Read and understand the service data and the Polaris warranty information con-

tained in this manual. Contact your Polaris dealer for replacement parts, service 

or warranty. Your dealer receives frequent updates on changes, modifications 

and tips on snowmobile maintenance, which may supersede information con-

tained in this manual. Your dealer is also familiar with Polaris policies and pro-

cedures and will be happy to assist you.
When contacting us about parts, service, or warranty, always provide the fol-

lowing information:
1. Serial number
2. Model number
3. Dealer name
4. Date of purchase
5. Details of trouble experienced
6. Length of time and conditions of operation
7. Previous correspondence
Use the page provided near the front of your Owner's Manual to record the 

identification numbers of your snowmobile and its engine.
Polaris Customer Service
United States: 1-763-417-8650
Canada: 1-204-925-7100

 

 

 

 

 

 

 

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