Engine Specifications; Carburetor Specifications; Track Specifications; Ski Shock Spring Specifications - Arctic Cat ZR 120 Service Manual

Engine Specifications

Engine Model Number
Displacement
No. of Cylinders
Bore x Stroke
Cooling System
Spark Plug (NGK)
Spark Plug Gap
Piston Skirt/Cylinder Clearance
Piston Pin Diameter
Piston Pin Bore Diameter (max)
Piston Pin/Connecting Rod Small End Clearance
Piston Ring End Gap
Piston Ring/Groove Clearance
Piston Ring Thickness
Piston Diameter (10 mm from skirt edge) (min)
Cylinder/Head Distortion (max)
Connecting Rod Small End Bore Inside Diameter
Connecting Rod Big End Inside Diameter
Connecting Rod Big End Side Clearance
Cam Lobe Height
Crank Pin Diameter (min)
Crank Pin/Connecting Rod Clearance
Crankshaft Rod Journal (Out-of-Round/Taper)
Crankshaft Runout (t.i.r.)
Valve Guide Inside Diameter (max)
Valve Guide/Stem Clearance (max)
Valve Face Width (min)
Valve Face Runout (max)
Valve Clearance - Cold (59°-77° F)
Valve Seat Contact Width (min)
Valve Stem Diameter (min)
Valve Stem Runout (max)
Valve Spring Free Length (max)
Camshaft End Running Surface (max)
Camshaft End Play (max)
6
70CL1-030
123 cc
1
56 x 50 mm
Air
BPR4ES
0.028-0.031"
0.0006-0.0016"
0.6297-0.6299"
0.433"
0.0001-0.0002"
(1st/2nd) 0.008-0.016"
(oil) 0.0079-0.0157"
(1st) 0.0016-0.0030"
(2nd) 0.0008-0.0024"
0.058-0.059"
2.205"
0.004"
0.6301-0.6307"
1.1023-1.1029"
0.008-0.024"
1.048-1.052"
1.102"
0.0002-0.0008"
0.004"
0.0008"
0.22"
(Int) 0.0016-0.0020"
(Exh) 0.0020-0.0030"
0.030"
0.0012"
(Int/Exh) 0.004"
(Int/Exh) 0.03"
(Int/Exh) 0.22"
0.0004"
1.04"
0.592"
0.002"
Carburetor
Specifications
Idle Fuel Adjuster Screw
Main Jet Pilot Jet
77.5 37.5

Track Specifications

Length Width Lug Height
68" 10"
Ski Shock Spring
Specifications
Wire
Free Length Rate LB/Inch
Diameter
6.97" 0.235"
Rear Arm Spring
Specifications
Wire #of
Angle
Diameter Coils
0.406" 6° 4.48
Ski Shock Absorber
Specifications
Collapsed
Extended Length
Length
7.78" 9.49"

Idler Wheel Dimensions

Location
Inside Rails
Idler Arm
Inside Rear Axle
Float Height
(Turns Out)
1 0.63"
Tension @ 20 lb
0.690" 1/4-3/8"
# of Coils Tab
85 9.0
Coil
Length Length
Width
2.45" 6.03" 4.57"
Piston
Stroke
Depth
1.71" N/A
O.D. Bearing I.D.
5.63" 0.787"
7.12" 1.181"
7.12" 0.787"
NO