Snowmobile Polaris High Performance (2001 year). Manual - part 14
ENGINE
2.2
When tightening bolts, nuts, or screws, a torque pattern should be followed to insure uniform equal tension is
applied to all fasteners. Proper torque application prevents fasteners from loosening or breaking in critical service.
It also minimizes wear and eliminates premature or needless repair costs. Following uniform torque application
sequence patterns assures optimum performance from precision machined, close tolerance assemblies. On vital
engine parts, torquing negligence could be costly.
Torque is a force which tends to produce rotation. The measurement of this force is expressed in units of force and
length. There are at present two basic systems of units used to express torque, English and Metric. In the English
system, the units of force are the pound or ounce, and the length is the foot or inch.
In the Metric system, the unit of force is expressed in grams (gm) or Newton meters (Nm), and length as
centimeters (cm) or meters (m). The most common units of torque in the English system are ft. lb. and in. lb. In the
Metric system, torque is commonly expressed in units of Nm. Multiply foot pounds by 1.382 to obtain Nm.
See page 2.3 for engine torque sequences
Engine
Cylinder Head*
Cylinder
Base Nuts
Crankcase
8 mm
Crankcase
10 mm
Flywheel
EC-45
18-19 ft. lbs.
(25-26.5 Nm)
24-28 ft. lbs.
(33-39 Nm)
17-18 ft. lbs.
(22-23 Nm)
23-25 ft. lbs.
(32-35 Nm)
60-65 ft. lbs.
(83-90 Nm)
S44**
SN60-44**
SN50**
20-24 ft. lbs.
(28 - 33 Nm)
30-34 ft.lbs
(42-47 Nm)
20-24 ft.lbs.
(28 - 33 Nm)
N/A
90 ft. lbs.
(124 Nm)
SN60-70**
SN70**
SN80**
18-22 ft. lbs.
(25 - 30 Nm)
30-34 ft.lbs
(42-47 Nm)
20-24 ft.lbs.
(28 - 33 Nm)
26-30 Ft lbs
(36-42 Nm)
90 ft. lbs.
(124 Nm)
EC79PL
18-19.5 ft. lbs.
(25-27 Nm)
23-25 ft. lbs.
(32-35 Nm)
20-22 ft. lbs.
(28-30 Nm)
23-25 ft. lbs.
(32-35 Nm)
60-65 ft. lbs.
(83-90 Nm)
**Torque head bolts prior to torquing cylinder base nuts. Apply loctite
t
242.
All 6mm Crankcase Bolts
108 in. lbs. (12.4 Nm)
. . . . .
All 7/16-14 Engine Mount Strap Bolts
44-48 ft. lbs. (60-66 Nm)
. . . . .