Snowmobile Polaris (2006 year). Instruction - part 14

2.6

GENERAL

GENERAL REFERENCE

STANDARD BOLT SPECIFICATIONS

The following torque specifications are to be used as a general 
guideline when torque value is not specified. There are 
exceptions in the steering, suspension, and engine areas. 
Always consult the torque chart and the specific manual 
section for torque values of fasteners.

Table 2-5: Standard Bolt Specifications

Bolt 

Size

Threads/

In 

Grade 2

ft-lb(Nm)

Grade 5

ft-lb(Nm)

Grade 8

ft-lb(Nm)

1/4

20

5 (7)

8 (11)

12 (16)

1/4

28

6 (8)

10 (14)

14 (19)

5/16

18

11 (15)

17 (23)

25 (35)

5/16

24

12 (16)

19 (26)

29 (40)

3/8

16

20 (27)

30 (40)

45 (62)

3/8

24

23 (32)

35 (48)

50 (69)

7/16

14

30 (40)

50 (69)

70 (97)

7/16

20

35 (48)

55 (76)

80 (110)

1/2

13

50 (69)

75 (104)

110 (152)

1/2

20

55 (76)

90 (124)

120 (166)

ft-lb X 1.356 = Nm

Nm X.7376 = ft-lb

Grade 2

Grade 5

Grade 8

2.7

GENERAL

SAE TAP DRILL SIZES

METRIC TAP DRILL SIZES

DECMIAL EQUIVALENTS

2.8

GENERAL

MESUREMENT CONVERSION CHART

Table 2-6: Measurement Conversion Chart

Unit of Measure

Multiplied by

Converts to

ft-lb

x 12

= in-lb

in-lb

x.0833

= ft-lb

ft-lb

x 1.356

= Nm

in-lb

x.0115

= kg-m

Nm

x.7376

= ft-lb

kg-m

x 7.233

= ft-lb

kg-m

x 86.796

= in-lb

kg-m

x 10

= Nm

in

x 25.4

= mm

mm

x.03937

= in

in

x 2.54

= cm

mile

x 1.6

= km

km

x.6214

= mile

Ounces (oz)

x 28.35

= grams (g)

grams (g)

x.035

= Ounces (oz)

cc’s

x.03381

= Fluid Ounces (oz)

lbs

x.454

= kg

kg

x 2.2046

= lbs

Cubic Inches

x 16.387

= Cubic Centermeters

Cubic Centimeters

x.061

= Cubic Inches

Imperial pints

x.568

= liters (l)

liters (l)

x 1.76

= Imperial pints

Imperial quarts

x 1.137

= liters (l)

liters (l)

x.88

= Imperial quarts

Imperial quarts

x 1.201

= US quarts

US quarts

x.833

= Imperial quarts

US quarts

x.946

= liters

liters

x 1.057

= US quarts

US gallon

x 3.785

= liter

liter

x.264

= US gallon

Pounds force per square inch (psi)

x 6.895

= Kilo pascals (kPa)

Kilo pascals (kPa)

x.145

= Pounds force per square inch (psi)

2.9

GENERAL

PISTON WASH / SPARK PLUG READING

Changing temperature, barometer, altitude, and fuel supply are 
just a few of the factors that can affect the day to day 
performance of your engine. That is why using Exhaust Gas 
Temperatures (EGT) are important for maintaining optimum 
performance. There are two methods for helping you 
determine what the EGTs are for your machine. Piston wash 
and the coloring of your spark plug.The piston wash is by far 
the most valuable tool in concluding EGTs, with the spark plug 

color running a distant second. Use the illustrations below to 
help you establish the EGTs for your machine.

Once the proper jetting is established, you can reference the 
EGT gauge for your baseline numbers. Then, if there is a rise 
or fall of 25 degrees, you must jet accordingly to return your 
EGTs to the baseline numbers.

GASOLINE INFORMATION

GASOLINE VOLATILITY

One of the misunderstood properties of gasoline is its 
volatility, or ability to vaporize at different ambient 
temperatures and altitudes during the year.

When gasoline is blended, it is given a Reid Vapor Pressure 
(RVP) number which reflects its ability to vaporize or mix 
with air at a given temperature range. Gasoline vapor pressure 
is measured by putting a sample of fuel inside a closed 
container and applying a specified amount of heat to the 

container for a certain amount of time. RVP will vary from 
about 7.0 PSI during the summer to approximately 13.5 PSI 
during the colder months. Service stations selling a large 
volume of fuel will normally have the correct blend to work 
well at all times throughout the year in their local area.

When the weather is very cold, gasoline must be able to 
vaporize very quickly in order for an engine to start and warm 
up properly. If summer blend fuel is being used in the winter, 
little or no vaporization will occur. Droplets will form causing 
flooding and very hard starting.

If winter blend fuel is being used during the summer months, it 
may cause vapor lock (boiling fuel) inside the fuel lines, fuel